GOST 13345-85

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  ГОСТ 13345-85

GOST 13345−85 Tin. Specifications (with Amendments No. 1, 2, 3)

GOST 13345−85

Group B33

INTERSTATE STANDARD

TIN

Specifications

Tin plate and black plate.
Specifications

ISS 77.140.50
OKP 09 7500, 11 1530, 1510 11

Date of introduction 1987−01−01

INFORMATION DATA

1. DEVELOPED AND INTRODUCED by the Ministry of ferrous metallurgy of the USSR

2. APPROVED AND put INTO EFFECT by Decision of the USSR State Committee for standards from 29.12.85 N 4761

3. INSTEAD 13345−78 GOST, GOST 15580−70, GOST 18178−72

4. REFERENCE NORMATIVE AND TECHNICAL DOCUMENTS

The designation of the reference document referenced	The number of the paragraph, subparagraph, apps
GOST 427−75	5.3
GOST 860−75	3.3.1; 3.4.1; Annex 2
GOST 1050−88	3.1.1
GOST 1760−86	Annex 5
GOST 1770−74	Annex 2
GOST 2789−73	3.2.1; 5.11; Annex 1
GOST 3118−77	Annex 2
GOST 3778−98	Annex 2
GOST 4202−75	Annex 2
GOST 4204−77	Appendix 3
GOST 4206−75	Appendix 3
GOST 4232−74	Annex 2
GOST 4530−76	Annex 2
GOST 6507−90	5.2
GOST 6709−72	Annex 1; 2; 3
GOST 7502−98	5.3
GOST 7566−94	4.4; 6.1
GOST 7933−89	Annex 5
GOST 8273−75	Annex 5
GOST 8728−88	3.4.3
GOST 8828−89	Annex 5
GOST 10163−76	Annex 2
GOST 10510−80	5.9
GOST 11239−76	Appendix 3
GOST 14192−96	6.6.1
GOST 15483.0−78 — GOST 15483.10−78	5.14
GOST 15846−2002	6.5
GOST 18300−87	App 1; 3
GOST 23677−79	Annex 1
GOST 23932−90	Applications 2; 3
GOST 24363−80	Annex 1; 2
GOST 26877−91	5.6

5. The expiration time limit is removed by the Resolution of Gosstandart from 29.12.91 N 2296

6. EDITION with Amendments No. 1, 2, 3, approved in September 1987, March 1990, December 1992 (IUS 12−87, 6−90, 2−93)

This standard applies to cold rolled sheet black and white (hot and electrolytic tinning), used for the manufacture of tin containers, packaging and other products.

1. BRAND

1.1. Depending on the purpose, surface conditions, quality requirements and properties of the sheet are divided into types: the NVC JR, gzhk, GIR, ask, ask-D, ASR, ASR-D.

The designation marks the letters stand for:

LCD tin tin; ZHR — tin for different purposes (in addition to the production of packaging for food products and closures); B — black; G — hot-dip tinning; e — electrolytic tinning, D — plate with differential coating.

Tin brands ZHR obtained by sorting tinplate brands of LCD; tin stamps NVC is intended for the manufacture of the tinplate canned.

1.2. Sheet classification:

by types (tab.1):

Table 1

View tin	OKP code	Mark
Black	09 7500	NVC JR
White hot-dip tinning	11 1530	GZHK, HER
White electrolytic tinning	11 1510	ASK, ASK-D, ASR, ASR-D

assortment:

sheet,

roll;

the degree of hardness of A1, A2, b, C, D;

by mass of tin coating:

for tinplate hot-dip tinning — class I and II,

for tin electrolytic tinning:

with the same cover — I, II, III classes

differential cover — DI, D, DIII.

(Changed edition, Rev. N 3).

2. ASSORTMENT

2.1. Depending on the thickness of the metal sheet produce the following numbers: 18, 20, 22, 25, 28, 32 36.

2.2. Maximum deviations in thickness and the difference in thickness at different points of the sheet or strip on a plot of 1 m for tin tin (LCD) needs to match the table.2.

2.3. Tin for different purposes (ZHR) deviation in thickness may be ±10%; the value of variable thickness — 0.01 mm greater than shown in table.2.

Table 2

mm

Room sheet	The thickness of the base metal	Limit deviation	The greatest difference in thickness at different points on one sheet or 1 m strip
18	0,18	+0,01 -0,02	0,01
20	0,20
22	0,22	+0,01	0,02
25	0,25	-0,02
28	0,28
32	0,32	±0,02	0,02
36	0,36	±0,02	0,03

2.4. The tinplates manufactured to the sizes given in table.3.

Table 3

View tin	Room sheet	Strip width in the roll, mm	Sheet size, mm
width	length
Black	18, 20, 22, 25, 28, 32, 36	712, 724, 820, 836, 910, 965, 1000, 1024	712	512, 635, 724, 743, 820, 910
724	658, 820
Eight hundred twenty	712, 724
836	716, 820, 910
1000	820, 910
1024	712
White hot-dip tinning	20, 22, 25, 28, 32, 36	-	712	512
White electrolytic tinning	18, 20, 22, 25, 28, 32, 36	712, 724, 820, 836, 1000, 1024	712	512, 635, 724, 743, 794, 820, 910
724	658, 820
770	642, 648
810	910
820	658, 712, 716, 724, 844, 910
836	716, 820, 910
1000	820, 910
635, 1024	712
Note. By agreement between manufacturer and consumer is permitted to replace the size of the width of the sheet to the length dimension of the sheet.

(Changed edition, Rev. N 2, 3).

2.5. Limit deviations on width of sheet and strip in coil and sheet length should not exceed the values given in table.4.

Table 4

Mark sheet	Limit deviation, mm
width	length
Canning (LC)	-0,0 3.0 a	-0,0* 3.0 a
For different purposes (ZHR)	To 2.0 3.0 a	To 2.0 +4,0

_______________

* Tin NVC gzhk grades and limit deviations mm.

2.6. Cocina cutting sheets of tinplate of a width of 712 mm shall not exceed 1.5 mm; sheets of tinplate intended for lithography, — 1,0 mm. For sheets of sheet metal of a width > 712 mm should not exceed 0.25%; sheets of tinplate intended for lithography, to 0.20% of the width of the sheet.

(Changed edition, Rev. N 3).

2.7. Camber should not exceed 0.15% of the length (width) of the sheet or length of the strip on a plot of 1 m.

2.8. The deviation from flatness for sheet brands of LCD should not exceed 5 mm, for sheet stamps ZHR — 10 mm.

Examples of symbols:

Black tinplate coil, rooms 22, of a width of 712 mm, brand NVC, degree of hardness A1:

Tin 22−712-NVC-A1 GOST 13345−85

Tinplate electrolytic tinning sheet, room 22, a width of 712 mm, a length of 512 mm, brand ASC, degree of hardness, coating class III:

Sheet 22−712х512-EGK-III GOST 13345−85

(Changed edition, Rev. N 3).

3. TECHNICAL REQUIREMENTS

3.1. General requirements for sheet metal

3.1.1. Tin manufacture of steel grades 08KP, 08ps, 10kp, 10ps with the chemical composition of the churchyard 1050.

3.1.2. The hardness of the base metal sheet of all grades should conform to the standards given in table.5.

Table 5

The degree of hardness	Hardness of Super-Rockwell 30T HR using table
diamond	steel
A1	53±3	57±3
A2	57±3	61±3
In	61±3	65±3
With	65±3	68±3
D	70±3	73±3

3.1.3. The depth of the wells Eriksen for the canning tinplate of hardness A1, A2, b, C must conform to the standards given in table.6.

Table 6

Room sheet	Sheet thickness, mm	The depth of the wells ericsen, mm, not less than for hardness
A1, A2	In	With
18	0,18	6,2	5,7	5,2
20	0,20	6,4	5,9	5,4
22	0,22	6,7	6,2	5,7
25	0,25	7,0	6,5	6,0
28	0,28	7,4	6,9	6,4
32	0,32	7,7	7,2	6,7
36	0,36	8,0	7,5	7,0

3.1.4. Tin for different purposes the depth of the hole to 1 mm less than the standards shown in table.6.

3.1.5. (Deleted, Rev. N 2).

3.2. Requirements for the black plate

3.2.1. The roughness parameter of the surface of the black plate, intended for coating by the electrolytic method, should be not more than 0,63 mm according to GOST 2789.

3.2.2. The surface roughness of the black plate, intended for subsequent coating with tin by the hot-dip tinning way, is not standardized.

3.2.3. Characterization of the surface and the defects allowed the black plate are given in table.7.

Table 7

Mark sheet	The surface characterization	Surface defects on sheet 1 or 1 m strip
NVC	The surface should be smooth, clean, no flaws, rusting, prisoners, bundles and impurities	Some minor nadawi and prints from rolls and rolls; flaw on edges with depth of 1.5 mm; light scratches and brackets; color tint; shades on the surface and easy corrosion, do not interfere with the detection of surface flaws
JR	The surface is smooth, clean with a separate surface defects and shape	In addition to the defects mentioned tin brand NVC, allowed: curved corners with the side up to 25 mm; myatost and brackets (without inversions and flaws); flaw on edges not more than 5 mm; dullness and dark spots; punctures (up to 6 PCs.) in different parts of the sheet or strip; Burr height of not more than ½ of the thickness of the sheet metal; some protruding coils of not more than 5 mm

(Changed edition, Rev. N 3).

3.2.4. Allowed in bundle or in coil sheet brand NVC no more than 3.5% of tin, having a deviation from flatness of 10 mm, thickness tolerances ±10% deviation over the width of the strip and sheet mm and the length of the sheet mm, curved corners with the side up to 25 mm, myatost and brackets (without inversions and flaws), flaw on edge of not more than 5 mm, dullness and dark spots, burrs height of not more than ½ of the thickness of the sheet, separate the protruding coils of not more than 5 mm.

3.3. Requirements for tinplate, hot-dip tinning

3.3.1. For tinning shall be used tin stamps 01 and 01пч according to GOST 860. The amount of impurities in the tin coating should not exceed 0,14%, including lead — not more than 0.04%.

(Changed edition, Rev. N 3).

3.3.2. Tin coating weight depending on the class of coating shall conform to the standards given in table.8.

Table 8

Class cover	The weight of coating applied on both sides 1 m, g
nominal	minimum
I	25,0	23,0
II	33,6	28,0

3.3.3. By agreement between manufacturer and customer can be manufactured sheets, on which from two sides of the tin with a nominal mass of 39.2 g/m. Minimum mass of coating shall be 33.5 g/m.

Note. A gesture made for long term storage on the order of foreign trade enterprises.

3.3.2, 3.3.3. (Changed edition, Rev. N 2).

3.3.4. The surface characteristics of tinplate, hot-dip tinning and permissible defects in the tin coating are given in table.9.

Table 9

Mark sheet	The surface characterization	Surface defects on 1 sheet
Gzhk	The surface should be clean, shiny, no rusty spots, metalogenic sections, captivity and pollution	Minor defects that do not violate the integrity of the coating: shade variation tin coating; easy nadawi and prints from rolls; separate surface contamination in the form of points; light scratches and brackets; tin grains with a diameter of 2 mm, bubbles with a diameter of 2 mm — 3 PCs.; flaw on edges with depth of not more than 1.5 mm; nodules of tin (burrs) on the edges of the sheets of a width not exceeding 3 mm; up to two of the curved corners with the side dimension of not more than 2 mm or absence of angles of the same size
HER	The surface is clean, shiny, with a separate surface defects and shape	In addition to the defects mentioned tin brand gzhk, permitted: surface scratches and brackets; naprawienie spots with a total area of not more than 50 cm; nodules of tin on the edges of leaves, bubbles with a diameter of 5 mm up to 10 PCs; two curved corner with a side of 25 mm or absence of angles of the same size; zinc chloride contaminated surface in patches with a total area of up to 50 cm; myatost edges up to 5 mm in the form of brackets without inversions; flaw on edges not more than 5 mm; small burrs with a height of not more than ½ of the thickness of the sheet; punctures (no more than 6 pieces in different places on the sheet)

3.3.5. Tin brand gzhk class I coating shall not have more than five pores, class II — not more than three pores per 1 cmof the surface.

3.3.6. For sheet stamps HER both classes cover the number of pores on the surface is not standardized.

3.3.7. Allowed in a packet of tin gzhk not more than 3.5% sheets having: a deviation from flatness of 10 mm, thickness tolerances ±10%, variations in the width of the sheet in mm and the length of the sheet mm, surface scratches, and parentheses, flows of tin on the edges of leaves, bubbles with a diameter of 5 mm up to 10 pieces, two curved corner with a side of 25 mm or absence of angles of the same size, myatost edges up to 5 mm in the form of brackets with no complications, flaws on the edges not more than 5 mm, minor burrs with a height of not more than ½ of the thickness of the sheet.

(Changed edition, Rev. N 3).

3.4. Requirements for tinplate, electrolytic tinning

3.4.1. For tinning shall be used tin stamps 01 and 01пч according to GOST 860 with a mass fraction of tin is not less than 99,90%.

3.4.2. Tin coating weight depending on the class of coating shall conform to the standards given in table.10.

Table 10

Class cover	Coating mass per 1 m, g
nominal		minimum
each side	common	each side	common
I	2,8/2,8	5,6	Of 2.23/2,23	4,46
II	5,6/5,6	11,2	5,25/5,25	10,50
III	8,4/8,4	16,8	7,60/7,60	15,20
DI	2,8/5,6	8,4	Of 2.23/5,25	Of 7.48
D	2,8/8,4	11,2	Of 2.23/7,60	9,83
DIII	5,6/8,4	14,0	5,25/7,60	12,85

3.4.3. The plate is subjected to passivation and oiling dioctylsebacate according to GOST with 8,728.

3.4.4. The surface characteristics of tinplate, electrolytic tinning, and the allowable defects in the tin coating are given in table.11.

Table 11

Mark sheet	The surface characterization	Surface defects on sheet 1 or 1 m strip
Ask	The surface is clean, shiny without rusting, metalogenic plots captured	Some minor defects that do not violate the integrity of tin coating: shade variation tin coating; naplavlena edge of a width not exceeding 3 mm; light scratches, scuffs; brackets; tin drops with a diameter less than 1 mm; vesicles with a diameter of 1 mm is not more than 3 pieces; flaw on edges to a depth of not more than 1.5 mm; up to two of the curved corners with the side dimension of not more than 2 mm or absence of angles of the same size; prints from rolls, nadawi
AIR	The surface is clean, shiny with a separate surface defects and shape	In addition to the defects mentioned tin brand, ask are allowed: scratches, brackets and naprawienie strip width up to 5 mm with a total area of not more than 50 cm; two curved corner with a side of 25 mm or absence of angles of the same size; dark grungy precipitation of tin with an area of not more than 30 cm, the individual slivers, and shell; nodules of tin in the form of droplets with a diameter of 3 mm up to 5 pieces; bubbles with a diameter of 5 mm up to 10 PCs.; naplavlenie areas in some places; myatost edges up to 5 mm in the form of brackets with no inversions and flaws; flaws on the edges not more than 5 mm; small burrs with a height of not more than ½ of the thickness of the sheet; punctures not more than 6 pieces in different places of the strip or sheet; corrosion on certain sections of sheet metal

3.4.5. Allowed in the stack or roll of sheets of stamps, ask and ask-D not more than 5% of the leaves or sections of strips of sheet metal, having: a deviation from flatness of 10 mm, a uniformity variation of ±10% deviation over the width of the strip and sheet mm and the length of the sheet mm, scratches and brackets, two curved corner with a side of 25 mm or absence of angles of the same size, the nodules of tin in the form of droplets with a diameter of 3 mm up to 5 PCs, bubbles with a diameter of 5 mm up to 10 PCs., naplavlenie areas in some places, myatost to 5 mm in the form of brackets without complications and flaws, flaws on the edges of 5 mm, small burrs with a height of not more than ½ of the thickness of the sheet. Welded seams not trimmed.

4. ACCEPTANCE RULES

4.1. Tin take parties. The party should consist of a tin of one brand, one number, one size and class of coating, one degree of hardness and presented a document about quality that contains:

trademark of the manufacturer;

the name of the consumer;

mark sheet and class of coating (tinplate);

the number and the size of the sheet;

the degree of hardness;

the sign «TM»;

the area of the sheet;

the theoretical weight of the batch sheet to sheet and the theoretical and actual mass of the party for the roll sheet;

the number of bundles or rolls;

the results of tests for product compliance with the requirements of this standard;

the date of the manufacturer;

the designation of this standard.

When changing the size of the sheet width size of the sheet length further specify which size is the width.

(Changed edition, Rev. N 2).

4.2. To check the size and quality of the surface of the plate is taken 1% of the mass or area of the party, but at least one bundle or roll.

(Changed edition, Rev. N 3).

4.3. To test the hardness, the depth of wells Eriksen, surface roughness, tin coating weight, porosity tin coating selected two pieces or two lanes with a length of 1 m from different parts of the bundles or coils selected in the sample for external inspection.

(Changed edition, Rev. N 2).

4.4. If unsatisfactory test results of at least one of the indicators, repeat tests performed on the sample selected according to GOST 7566.

5. TEST METHODS

5.1. The surface quality of the sheets and coils checked by visual inspection without the use of magnifying devices.

5.2. The thickness of the sheet measured with a micrometer (GOST 6507) with an error of less than 0.004 mm in the distance from the edge at least 15 mm.

5.3. The linear dimensions of sheet and rolled steel line check (GOST 427), roulette (GOST 7502) or other measuring tools that provide required accuracy of measurement.

5.4. Cosine of the cut is determined by the ratio of the projection of edges to the width of the sheet (Fig.1).

Damn.1

Damn.1

(Changed edition, Rev. N 3).

5.5. Camber is determined by the ratio cut to the sheet length or 1 m strip: (damn.2).

Damn.2

Damn.2

5.6. The deviation from flatness is determined according to GOST 26877.

(Changed edition, Rev. N 3).

5.7. Samples for testing are cut from lengths of strip or sheet in accordance with the devil.3−5.

Damn.3. Cutting samples of leaves and strips of black tin

Cutting samples of leaves and strips of black tin

1 — samples for measuring the hardness (70x70 mm); 2 — band
with a width of 90 mm for the test of the extrusion holes at Eriksen;
3 — sample to determine the roughness parameter (100x100 mm)

Damn.3

Damn.4. Fillet samples from sheets of tinplate, hot-dip tinning

Fillet samples from sheets of tinplate, hot-dip tinning

1 — samples for measuring the hardness (70x70 mm); 2 — samples for
measuring tin coating (100x100 mm); 3 — samples for the determination
mass of tin coating (20 mm); 4 — strip of width 90 mm
the diagonal of the sheet for testing on the extrusion holes at Eriksen

Damn.4

Damn.5. Fillet samples of sheet and strip tinplate, electrolytic tinning

Fillet samples of sheet and strip tinplate
electrolytic tinning

1 — samples for measuring the hardness (70x70 mm); 2 — wide strip
90 mm for the test of the extrusion holes at Eriksen; 3 — samples
to determine the mass of tin coating (20 mm)

Damn.5

(Changed edition, Rev. N 2).

5.8. The hardness measurement is carried out by Super-Rockwell according to methodology described in Annex 1. The measurement is performed after removing the protective coating and removing of lubricant.

The result of the test take the arithmetic mean value of hardness measured on four samples for each type of sheet metal.

If there are differences in hardness measured with the use of the diamond table.

5.9. Test by squeezing on Eriksen carried out according to GOST 10510 on two samples for each type of sheet metal. The test result is the average of definition of the depth of six holes located on the sides and in the middle of the sample.

5.10. (Deleted, Rev. N 2).

5.11. The definition of surface roughness is performed on a single sample according to GOST 2789.

5.12. Test the firmness and determination of the depth of the hole can be carried out in a stream of non-destructive methods, including physical (magnetic) methods providing the required accuracy of measurement. If there are differences in hardness, the depth of the hole is determined by direct tests according to PP.5.9, 5.11.

(Changed edition, Rev. N 2).

5.13. Determination of mass of tin coating is carried out by iodometric method using COor iodide Iodate mixture by the method given in Appendix 2. Allowed to use other methods of determining the number and thickness of the tin layer, providing the desired precision control.

The result of the test taking the arithmetic mean of all measurements.

If any dispute occurs the tin coating weight is determined by iodometric method.

(Changed edition, Rev. N 3).

5.14. The content of harmful impurities in the tin used for coating, determine the churchyard 15483.0 — GOST 15483.10.

5.15. Test for porosity gorjachekatanoj tin brand gzhk carried out according to methodology described in Annex 3.

5.16. The theoretical definition of mass and area

5.16.1. Square sheet of tin is determined by multiplying the size of the sheets with addition of 0.5 tolerance on length and width of the sheet.

Area of rolled steel is determined by multiplying the length of the strip in a roll the width of the strip with the addition of 0,5 the tolerance width of the strip.

5.16.2. The theoretical weight of sheet and rolled steel is determined by multiplying the square of the thickness and density of the base metal being equal to 7.85 t/m. Coating mass not taken into account.

The values of theoretical mass and the square of sheet and rolled steel depending on its size is given in table.1 and 2 of Annex 4.

6. MARKING, PACKAGING, TRANSPORTATION AND STORAGE

6.1. Marking, packaging, transportation and storage — by GOST 7566.

6.2. Sheet tin Packed in bundles.

6.3. Pack sheet should consist of a number of leaves multiple of 50, stacked on one pallet.

The number of sheets in bundles of one party must be the same.

6.3.1. Gross weight of one bundle should not exceed 1.5 T.

6.3.2. Gross weight of one roll is installed by the user in the order and shall not exceed:

15 tons — for transportation on open rolling stock;

1,5 t — transport in covered vehicles.

6.4. Inner diameter of coils of sheet metal of a width 712−1024 is 400 mm and 500 mm. Maximum outer diameter up to 1200 mm.

6.3−6.4. (Changed edition, Rev. N 3).

6.5. During the transportation of tin in the far North regions and equated areas, the packing is carried out in accordance with GOST 15846.

6.6. Marking sheet with a graded plating is performed by applying longitudinal stripes on the side of a thick coating.

Depending on the class of covering the distance between the marking strips is:

DI — (50±5) mm;

D — (75±5) mm;

DIII — (100±5) mm.

By agreement with the consumer allowed to label the tin with the other intervals between stripes or no marking indicating the class of the coating on the label.

6.6.1. Transport marking under GOST 14192.

6.7. To each roll, bundle, attach the label in which you specify:

trademark of the manufacturer;

the name of the sheet;

mark sheet;

the number and the size of the sheet;

class cover (for tinplate);

the degree of hardness;

the number of sheets in the stack or the number of metres of strip in the coil;

the area of the sheet;

the theoretical weight of sheet in the bundle or the theoretical and the actual weight of the sheet roll;

the sign «TM»;

batch number;

room sorter, inspector of technical control Department;

the number of the packer or the number of teams;

the date of manufacture;

the designation of this standard.

6.8. From the outside of the package with indelible paint applied to data from a label or attach a second (metal) label with these data.

Tin intended for long-term storage, applied on the outer side of the marking of additionally applied the word «storage» and the theoretical weight of each place.

When transporting the sheet of water transport from the outside packaging is applied to the sign «Protect from moisture».

6.7, 6.8. (Changed edition, Rev. N 3).

6.9. Transportation of tin is carried out by all types of transport in covered vehicles in accordance with goods transportation regulations applied to this type of transport, and conditions of loading and fastening of cargoes, approved by the Ministry of Railways of the USSR.

By agreement with the consumer allowed transportation of steel open rolling stock.

(Changed edition, Rev. N 1).

6.10. During the transportation of coils by water transport packing is carried out with a vertical axis.

6.11. The storage sheet is carried out in dry closed rooms in conditions that exclude exposure to moisture.

6.12. Enterprises engaged in long-term storage, the plate should be stored at temperature not below +4 °C and relative humidity not more than 80%.

ANNEX 1 (mandatory). METHOD FOR DETERMINATION OF HARDNESS OF SUPER-ROCKWELL

ANNEX 1
Mandatory

1. Sample preparation

1.1. Samples of steel testing the hardness of size 70x70 mm cut from each sheet or piece of strip according to the schemes given on features.3−5 of this standard.

1.2. The sample must be flat, clean, dry surface, without scratches, nicks, grease, rust or any coating. Samples with a curved surface deformation, and with oiled surface hardness test is not allowed.

1.3. The tin coating is removed in heated to 50−70 °C solution of composition: 50 g/DMof sodium hydroxide (GOST 24363), 25 g/DMmecanicamente acid, prepared with distilled water (GOST 6709).

Loose from the cover plate washed with water and rubbing alcohol (GOST 18300).

2. Measuring instruments

2.1. Hardness is measured on the instruments according to the GOST 23677.

(Changed edition, Rev. N 3).

2.2. The measurement is performed on a scale of 30 tons, with a load of 294 N (30 kgf) ball diameter 1,588 mm, for a point reference table.

2.3. The support surface of the point table must be clean, have no traces of fingerprints, scratches, nicks, grease, or other contaminants. The appearance of the traces of prints on the surface of the table should be polished to a roughness of not more than 0,32 µm according to GOST 2789.

(Changed edition, Rev. N 3).

2.4. On the reverse side of the test sample admit traces of fingerprints.

2.5. After each replacement of a tip are checking the readings with exemplary measures the hardness (reference standards).

3. Measurements

3.1. Hardness is measured in compliance of instructions given in the operating instructions of the devices according to GOST 23677.

(Changed edition, Rev. N 3).

3.2. The centers of the prints should be placed at a minimum distance of 6 mm from each other or from the edge of the sample.

3.3. Evaluation of the hardness is carried out in conventional units, depending on the depth of penetration of a steel ball in a test body under the action of two consecutively applied loads: pre-29,4 N (3 kgf) and basic 294 N (30 kgf).

3.4. Readout of the results of the hardness measurements carried out on the indicator scale automatically removing the main load (in the unit it fixed the click) with the continued effect of pre-load.

Number hardness is the indication arrows on the indicator scale in whole units.

3.5. For the measurement result taking the arithmetic mean of at least three definitions of hardness obtained on the same sample.

The first two measurements on the samples after changing the tip or reference point of the table isn’t taken into account.

3.6. The total scatter of the hardness values for test sample shall not exceed ±2 units.

If the variation is more than ±2 units, it is possible to repeat the measurement.

3.7. Values standards of hardness shown in table.5 of this standard and relating to a sheet thickness of 0.25−0.28 mm, obtained on the support point table with a diamond contact surface and the standard table to the devices according to GOST 23677.

When hardness testing on the device with the diamond contact surface hardness indicate HR30TA.

3.8. In determining the hardness values for the sheet thickness less than 0.25 mm and 0.28 mm it is necessary to consider the influence of hardness of the reference point of the table and adjust the measurements for the correction in accordance with the table.

Sheet thickness, mm	The correction, HR30Т
0,18; 0,20	To 2.0
0,22	A 1.0
0,25; 0,28	0,0
0,32	+1,0
0,36	+2,0

From the table it follows that the material with the same metallurgical quality with a thickness of 0.22 mm is measured on the instrument the hardness by one unit higher, and the material thickness of 0.32 mm is one unit below the actual.

Log and certificate record the hardness as amended. For example, for a tin thickness 0.18 mm when receiving on the device an average hardness of 55 units, the value recorded of the hardness is 55−2=53 units.

3.7, 3.8. (Changed edition, Rev. N 3).

ANNEX 2 (mandatory). IODOMETRIC METHOD FOR DETERMINATION OF MASS OF TIN COATINGS OF TINPLATE

ANNEX 2
Mandatory

The method is based on the oxidation of iodine divalent tin in hydrochloric acid medium.

1. Sample preparation

1.1. For determining the weight of tin coating on tin hot tinning and electrolytically tinned sheet metal of each sheet or piece of strip cut the strip according to the schemes given on features.4 and 5 of this standard.

1.2. The strips of grooved rubber stamp at an equal distance from each other vyshtampovyvajut 10 or 20 samples with a diameter of 20 mm.

(Changed edition, Rev. N 3).

1.3. For determining the weight of tin coating on electrolytically tinned sheet metal with a graded coating on the cut strip on one side and remove the tin with sandpaper or by chemical dissolution. In case of discrepancies, the tin is removed by chemical dissolution. After removing the tin with one of the parties vyshtampovyvajut samples according to claim 1.2.

2. Reagents and apparatus

Glassware and equipment laboratory glass according to GOST 23932.

Measuring instruments lab glassware: burette, pipette.

Volumetric glassware lab glass: cylinders, beakers, flasks according to GOST 1770.

Hydrochloric acid according to GOST 3118, density of 1.19 g/cm.

Calcium carbonate according to GOST 4530.

Potassium iodide according to GOST 4232.

Potassium ignominously according to GOST 4202.

Potassium ignominously according to GOST 4202, solution with molar concentration of the equivalent 0,1 mol/DM.

Potassium hydroxide according to GOST 24363.

Antimony trichloride in the NTD.

The soluble starch according to GOST 10163, solution with a mass fraction of starch 1% (freshly prepared).

Distilled water according to GOST 6709.

Tin GOST 860.

Zinc for NTD.

Lead brand WITH GOST 3778.

The antimony trioxide in the NTD.

All reagents must have a qualification not lower than h.d. a.

3. Preparation of the solution

3.1. Iodide iodata mixture, solution in which the molar concentration equivalent of 0.15 mol/DM: linkage odnomodovogo potassium 5.1 g is placed in a measuring flask with volume capacity of 1000 cm. Pour 500 cmof distilled water. After complete dissolution add 0.2 g of potassium hydroxide. The solution was stirred. Add 80 g of potassium iodide. After complete dissolution of potassium iodide solution volume was adjusted with distilled water to 1000 cm.

3.2. A standard solution of tin: 7 g of tin in the form of thin plates or fine powder, dissolve in 500 cmof hydrochloric acid in the conical flask with a capacity of 1000 cmwithout heating in a fume hood, covering the flask with a funnel. Occasionally the solution is stirred. After complete dissolution of the tin (termination of allocation of gas bubbles) the solution volume is brought to 1000 cmwith distilled water. The mass of tin in 1 cmof solution is equal to 0,007 g.

3.3. Determination of the mass concentration of the tin with the use of odnomodovogo potassium with molar concentration of the equivalent 0,1 mol/DMsolution or the iodide Iodate mixture with molar concentration equivalent of 0.15 mol/DM.

Pipette select 10−20 cmof a standard solution of tin was placed in a conical flask with a capacity of 250 cm, add 70 cmof distilled water, eight pellets of zinc metal (4−5 g) or 10−15 g of lead arsenic. The solution was kept for 30−35 minutes, until a tin is not restored to spongy condition. Then throw in a flask 1−2 pieces of marble (calcium carbonate), add 80 cmof hydrochloric acid (density 1,19 g/cm) and heated until complete dissolution of the sponge. Then again roll the marble and the solution was cooled with running water (in a fume hood).

After cooling, titrated with a solution odnomodovogo potassium with molar concentration of the equivalent 0,1 mol/DMor a solution of iodide Iodate mixture with molar concentration equivalent of 0.15 mol/DMin the presence of 1−2 cmstarch solution with a mass fraction of 1%. The titration is done after reaching a steady blue color.

Mass concentration () tin, expressed in g/cm, is calculated by the formula

where  — weight of tin with 1 cmstandard solution, g;

 — the volume of a standard solution taken for titration, cm;

 — the volume of the solution consumed for titration, sm.

Determination of the mass concentration of tin in the solution is carried out at three to five samples; the volume of the solution consumed for titration should not vary by more than 0.2 cm. For final result take an arithmetic average value of the results obtained

.

3.4. A solvent to remove tin: 32 g of antimony trichloride are dissolved in 1000 cmof hydrochloric acid density of 1.19 g/cm.

Solvent with cotton and remove the tin from one side of the strips, then vyshtampovyvajut 10 or 20 samples with a diameter of 20 mm and determine the mass and thickness of the coating. Determination of mass and thickness of the tin coating on the other side is carried out similarly.

(Changed edition, Rev. N 3).

4. Analysis

4.1. In a flask with a capacity of 100 cmpour 10 or 20 cmof hydrochloric acid and heated to boiling. In the boiling solution, drop the piece of marble (calcium carbonate) and samples of tin. The flask is stoppered with a valve and allowed to stand for 5 min.

(Changed edition, Rev. N 3).

4.2. The solution was dipped a piece of marble, and add 50 cmsvejeprokipachenna and cooled distilled water.

4.3. After cooling, pour 1−2 cm ofstarch solution with a mass fraction of 1% and titrated to a stable blue coloration with a solution of odnomodovogo or potassium iodide Iodate mixture.

5. Processing of the results

5.1. The tin coating weight (), g per 1 mof the surface of the plate, calculated by the formula

,

where is the volume of the solution consumed for titration, cm;

 — mass concentration of a solution of tin in g/cm;

 — total area of 10 or 20 samples of tin, cm(for electrolytically tinned sheet metal with a graded surface coating 10 samples on one side).

(Changed edition, Rev. N 3).

5.2. Tin differential coating mass of tin is determined sequentially on each side. Final verification of the amount of tin is carried out by determining the total amount of tin on both sides of the sheet. It should be equal to the total quantity of tin obtained on each side of the sheet.

APPENDIX 3 (obligatory). THE METHOD OF DETERMINING POROSITY ON TINPLATE, HOT-DIP TINNING

APPENDIX 3
Mandatory

1. Sample preparation

From each sheet cut samples with a size of 100x100 mm according to the scheme given on features.4 of this standard.

2. Equipment and reagents

Oils according to GOST 23932.

Gelatin GOST 11239.

Potassium genesisintermedia according to GOST 4206.

Sulfuric acid according to GOST 4204 with molar concentration of equivalent to 0.5 mol/DM.

The technical rectified ethyl alcohol according to GOST 18300.

Distilled water according to GOST 6709.

3. Preparation of solutions

Solution a: 20 g gelatin pour 500 cmof distilled water and leave to swell. Then heated in a water bath at a temperature of 65−70 °C for the formation of a colloidal solution.

Solution B: 2 g relatoseroticos potassium is dissolved in 290 cmof distilled water. Then to the solution add 10 cmsulphuric acid with molar concentration of equivalent to 0.5 mol/DMand 200 cmof ethanol.

The solution is to determine the porosity in the mortar And while stirring pour the solution B.

4. Measurements

On the surface of a sample size of 100x100 filter paper applied a thin layer of solution. After hardening of the second layer. The calculation then is carried out through 10 min become apparent on the surface of the plate of blue points.

(Changed edition, Rev. N 3).

5. Processing of the results

The number of then () on the surface in 1 cmdetermined by the formula

where is the number of pores in the square of the sample;

 — area of sample, cm.

ANNEX 4 (required). Theoretical mass and the square of sheet and rolled steel

ANNEX 4
Mandatory

Table 1

Sheet size, mm	Square 1000 PCs. of sheets, m	Theoretical weight of 1000 pieces of leaves, kg., the thickness of the tinplate sheet electrolytic tinning, mm
0,18	0,20	0,22	0,25	0,28	0,32	0,36
635х716	456,7	644	717	790	895	1005	1146	1292
712х512	366,4	518	575	633	719	805	920	1035
712х635	454,1	642	713	784	891	898	1141	1283
712х724	517,6	731	813	894	1016	1138	1300	1463
712х743	531,2	751	834	917	1042	1168	1334	1501
712х794	567,6	802	891	980	1114	1248	1426	1604
712х820	586,1	828	920	1012	1150	1288	1472	1656
712х910	650,4	919	1021	1123	1276	1430	1634	1838
724х658	478,5	676	751	826	939	1052	1202	1352
724х820	596	842	936	1029	1170	1310	1497	1684
770х648	501,1	708	787	865	983	1101	1259	1416
810х910	739,7	1045	1161	1277	1452	1626	1858	2090
820х716	589,4	833	925	1018	1157	1295	1481	1666
820х844	694,6	981	1091	1200	1363	1527	1745	1963
820х910	748,8	1058	1176	1293	1470	1646	1881	2116
836х716	600,9	849	943	1038	1179	1321	1509	1698
836х820	688	972	1080	1188	1350	1512	1728	1944
836х910	763,4	1079	1199	1318	1498	1678	1918	2157
1000х820	822,7	1162	1292	1421	1615	1808	2067	2325
1000х910	912,9	1290	1433	1577	1792	2007	2293	2580
1024х712	731,7	1034	1149	1264	1436	1608	1838	2068

Table 2

Strip width, mm	The area of the 1000 m strip, m	Theoretical weight of 1000 m strip, kg, thickness of a roll of black tinplate and electrolytic tinning, mm
0,18	0,20	0,22	0,25	0,28	0,32	0,36
712	713,5	1008	1120	1232	1400	1568	1792	2016
724	725,5	1025	1139	1253	1424	1595	1822	2050
820	821,5	1161	1290	1419	1612	1806	2064	2322
836	837,5	1183	1315	1446	1644	1841	2104	2367
910	911,5	1288	1431	1574	1788	2003	2290	2576
965	966,5	1366	1517	1669	1896	2124	2428	2731
1000	1001,5	1415	1572	1730	1965	2201	2516	2830
1024	1025,5	1449	1610	1771	2013	2254	2576	2898

Table 3

Sheet size, mm	Square 1000 PCs. of sheets, m	Theoretical weight of 1000 pieces of leaves, kg., the thickness of the tinplate sheet black and hot-dip tinning, mm
0,18	0,20	0,22	0,25	0,28	0,32	0,36
712х512	366,7	518	576	633	720	807	920	1038

ANNEX 4. (Changed edition, Rev. N 3).

APPENDIX 5 (mandatory)

ANNEX 5
Mandatory

Damn.1. The scheme of packing sheets black sheet

The scheme of packing sheets black sheet

Damn.1

On a wooden pallet 1 having the bottom two support bars 2 section of at least 60 x 80 mm, gaining a stack of sheets black plate 8.

The top of the pack four applied metal bracket 7 and then, on the side of tutu wearing made of sheet steel split casing 3.

On the top of the pile put a metal cover 5 and the bottom of the pack draped metal corners 9, and then the whole pack of pull together two transverse and one or more longitudinal steel strips 6 and fasten with lock 4.

Damn.2. The scheme of packing of sheets of tinplate

The scheme of packing of sheets of tinplate

Damn.2

On a wooden pallet 1 having the bottom two support bar cross-section 80x80 mm, put the defective sheet of tin.

Dialed pack is wrapped in a first wrapping paper according to GOST 8273 or podvergaet according to GOST 1760, then waterproof paper GOST 8828. On top of the stack is applied to the bottom sheet of cardboard according to GOST 7933 or defective tinplate sheet 5.

On all edges of a pack applied metal corners 2, and then fasten the bundle with two longitudinal and two transverse packing strips 4. Then, on the side bonded tutu wearing split casing 7 made of sheet steel, the top is closed by a metal lid 6 and re-fasten two transverse and two longitudinal packing strips by means of lock 3.

Damn.3. Diagram of the packaging sheet coils with horizontal axis

Diagram of the packaging sheet coils with horizontal axis

Damn.3

Rolls of sheet metal wrapped in a layer of parchment 1 according to GOST 1760 or wrapping paper according to GOST 8273, wrapping paper 2 according to GOST 8273, waterproof paper GOST 8828 and black tinplate 3.

The edges of the parchment or paper bends so as to close the ends of the rolls.

The coils are placed on wooden pallets 5, consisting of two longitudinal and two transverse bars, with the axis of the coil must be in a horizontal position.

Outside on the ends of the coils is applied to the disks 6 of the black plate. Wrapped the coil, tightening steel strips 4 and attach to the pallet.

(Changed edition, Rev. N 3).

Damn.4. The scheme of packing of coils of sheet metal with a vertical axis

The scheme of packing of coils of sheet metal with a vertical axis

Damn.4

1 — roll of tin; 2 — wrapping paper according to GOST 8273; 3 — paper
two-layer waterproof packing according to GOST 8828;
4 — metal cap; 5 — metal housing; 6 — pallet wood;
7 — tape packing; 8 — the lower backing sheet