GOST 598-90

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  ГОСТ 598-90

GOST 598−90 Leaves zinc General purpose. Specifications (with Change No. 1)

GOST 598−90
(CT CMEA 2624−80)
Group B54
STATE STANDARD OF THE USSR

LEAVES ZINC GENERAL PURPOSE

Specifications

General-purpose zinc sheets. Specifications

GST 18 3110

Date of introduction 1991−01−01

INFORMATION DATA

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

DEVELOPERS

V. N. Fedorov, doctor of engineering. Sciences; Y. M. leybov, PhD. tech. Sciences; V. V. Guzeeva

2. APPROVED promulgated by the Decree of the USSR State Committee on management of quality and standards from 05.03.90 N 340

3. THE STANDARD FULLY COMPLIES ST SEV 2624−80

4. REPLACE GOST 598−71

5. REFERENCE NORMATIVE AND TECHNICAL DOCUMENTS

The designation of the reference document referenced	The number of the paragraph, subparagraph
GOST 427−75	3.2
GOST 2991−85	1.5.1
GOST 3640−94	1.3.1
GOST 6507−90	3.2
GOST 7502−89	3.2
GOST 8828−89	1.5.1
GOST 10198−91	1.5.1
GOST 13813−68	3.5
GOST 14192−96	1.4.2, 1.4.3
GOST 15846−79	1.5.3
GOST 17261−77	3.3
GOST 18242−72	2.3
GOST 18321−73	2.3, 3.2
GOST 19251.0−79 — GOST 19251.6−79	3.3
GOST 21140−88	1.5.1
GOST 21650−76	1.5.2
GOST 24231−80	3.3
GOST 24597−81	1.5.2
GOST 26653−90	4.2
GOST 26663−85	1.5.2
GOST 26838−86	1.5.1
GOST 26877−91	3.4

6. Limitation of actions taken by Protocol No. 5−94 of the Interstate Council for standardization, Metrology and certification (ICS 11−12−94)

7. REPRINT (October 1997) with amendment No. 1, approved in February 1991 (IUS 5−91)


This standard applies to cold rolled zinc sheets are General purpose, used in various industries.

The standard does not apply to zinc sheets for making current sources and for the printing industry.

1. TECHNICAL REQUIREMENTS

1.1. Sheets are produced in accordance with the requirements of this standard for technological regulations approved in the prescribed manner.

1.2. Basic parameters and dimensions

1.2.1. Tile dimensions and tolerances for thickness shall be as given in table.1.

Table 1

mm
The thickness of the sheets	The ultimate deviation in the thickness of the sheets when the width of the		Length sheets with a width of
450−750	800−1000	450; 500	600	650, 660, 700, 750	800, 1000
0,15	-0,03	-0,06	500 700	500 700 1000 1500 2000	1000 1500 2000
0,20
0,22
0,25
0,30	-0,08
0,35
0,40	-0,07	700 800 900 1000 1250 1400 1500 2000			1000 1500 2000
0,45
0,50	-0,10
0,55
0,60
0,65	-0,12
0,70
0,75
0, 80	-0,08	-0,14
0,85
0,90
Of 1.00	0,09
1,25	-0,16
1,50	-0,12	-0,20
1,80
Of 2.00	-0,15	-0,28	1000 1250 1400 1500 2000
2,50
Of 3.00	-0,20
3,50	-0,24	-0,34
Of 4.00
5,00	-0,40	-0,40
6,00	-0,50	-0,50

Note. Theoretical weight of 1 mof sheets given in the Appendix.

1.2.2. The party is allowed 5% of the leaves from the mass party with a deviation of a thickness not exceeding double tolerance; must be thicker than 0.25 mm deviation in width and length by 10% up to 10% of the mass of the party.

1.2.3. Maximum deviations of normal accuracy in width and length of sheets shall be as specified in table.2.

Table 2

mm
Thickness	Limit deviation of normal accuracy
width	length
0.4 incl.	±3	±3
SV. 0,4	±5	±10

The legend shall appear on the diagram:

when the following abbreviations:
method of manufacture:
cold-rolled	— D
Precision manufacturing:
normal accuracy in thickness:
normal accuracy in width and length	— N;
normal accuracy in width and increased length accuracy	— O;
increased accuracy in width and normal length accuracy	— ;
increased accuracy in width and length	— R;
increased accuracy on thickness:
normal accuracy in width and length	And;
normal accuracy in width and increased length accuracy	— ;
increased accuracy in width and normal length accuracy	— L;
increased accuracy in width and length	— P.

In the absence of data is a sign of X.

Example of symbolic designation of cold-rolled sheet of rectangular cross section, normal accuracy for width, length and thickness, 0,25 mm thick, width 450 mm, length 700 mm, zinc brand of C0:

Sheet DPNH 0, C0 25х450х700 GOST 598−90

1.3. Features

1.3.1. The leaves are made from zinc grades C0, C1 and C2 according to GOST 3640.

1.3.2. The surface of the sheets must be free from contamination, hinder visual inspection.

1.3.3. The leaves should be trimmed evenly and must not have significant burrs on the edges.

1.3.4. Features basic performance

1.3.4.1. The leaves produce normal accuracy in thickness, width and length.

Length, thickness, sheet width and tolerances for thickness, width and length normal accuracy shall be as given in claim 1.2.

1.3.4.2. On the surface of the sheet is not allowed defects: risks, dents, fingerprints from the rolls, bubbles, and others affecting the use of the leaves for assigning and deducing the leaves at reference sweep for tolerances for thickness.

Allowed traces of the technological lubricant.

(Changed edition, Rev. N 1).

1.3.4.3. Mainly cutting of sheets should not exceed the limit deviations on width and length of leaves.

1.3.5. Characteristics of performance that are installed at the customer’s request

1.3.5.1. Sheets with a width of 800−1000 mm and a thickness of 2,0; 2,5; 3,5 and 4,0 mm of high accuracy in thickness produce extreme deviations minus 0,20; 0,25; 0,30 and 0.30 mm, respectively.

Sheets with a thickness of 5.0 and 6.0 mm, used for the manufacture of anodes, high accuracy in thickness produce extreme deviations in thickness minus 0.30 mm.

1.3.5.2. Limit deviation high precision on width and length of sheets shall be as specified in table.3.

Table 3

mm
Thickness	Limit deviation high precision
width	length
0.4 incl.	-3	-5
SV. 0,4	-6

1.3.5.3. The surface of the sheets must be free from contamination. Allowed on the surface defects (scratches, dents, fingerprints from the rolls, bubbles, etc.), not affecting the use of the sheets on purpose and not bringing the leaves in the control sweep for half of limit deviations for thickness, as well as traces of the technological lubricant.

Requirements to the surface quality set by the approved samples.

1.3.5.4. The deviation from the flatness of the sheets not more than 20 mm per 1 m length.

1.3.5.5. Sheets up to 3 mm should withstand at least five bends when subjected to a bend.

1.3.5.6. Sheets with deviations in thickness, not exceeding double the tolerance in the amount of 5% by weight of the party are not allowed.

Sheets with a thickness of 0.25 mm with a variance in width and length by 10% in number 10% of the mass of the party are not allowed.

1.3.6. Characteristics of performance established by agreement between the consumer and the manufacturer

1.3.6.1. The leaves are allowed to produce other sizes according to the thickness limit deviations for the next larger size given in table.1.

1.3.6.2. The leaves are allowed to produce other sizes in width and length, with maximum deviations in width and length and the requirements to the surface quality — by agreement of the parties.

1.4. Marking

1.4.1. At the end of each sheet must include:

trademark or name of the manufacturer and trademark;

brand of zinc;

batch number.

1.4.2. Each box must be marked according to GOST 14192 with the indication:

the trademark or name of the manufacturer and trademark;

legend sheet;

batch number;

gross mass and net.

1.4.3. Transport marking — according to GOST 14192 with the application of manipulation sign «Protect from moisture» and the batch number.

1.5. Packaging

1.5.1. The packaging should protect the plates from mechanical damage, moisture and active chemical substances.

As the transport containers used boxes type I-1, boxes type I-2 according to GOST 10198, boxes types II-1, II-2, III-2 according to GOST 2991 or other boxes according to normative-technical documentation with the standards of mechanical strength according to GOST 26838 and sizes in accordance with GOST 21140 and are lined with waterproof paper according to GOST 8828.

The gross mass of the box must not exceed 600 kg.

(Changed edition, Rev. N 1).

1.5.2. Cargo space has to enlarge in transport packets weighing up to 1250 kg churchyard 24597.

Allowed other ways and means of formation of packages according to normative-technical documentation with the requirements of GOST 26663, GOST 24597 and GOST 21650.

1.5.3. Packaging products in the far North and equated to them districts, — the churchyard 15846 in the group «Metals and metal products."

1.5.4. Each box must be attached to packing list stating:

the trademark or name of the manufacturer and trademark;

the legend sheets;

batch number.

1.5.5. Allowed the transport of sheets in the container without packing and without reloading on the way.

2. ACCEPTANCE

2.1. The leaves take parties. The party must consist of sheets of one brand of zinc of the same size and be accompanied by a document about quality that contains:

trademark or name of the manufacturer and trademark;

batch number;

the results of the tests (at the request of the consumer);

the symbol sheet;

the gross weight and net party.

The mass of the party must be not more than 9 t

2.2. Checking the width, length and surface condition subjected 1% of the leaves from the mass of the party, but not less than 10 sheets.

2.3. To control the thickness of the sheets selected from the party lists «blind» (by the greatest objectivity) according to GOST 18321.

Control plan — GOST 18242, level II — shared.

The number of selected sheets is determined in accordance with table.4.

Table 4

PCs
The number of sheets in the party	The number of monitored sheets
9−15	3
16−25	5
Correspond 26−50	8
51−90	13
91−150	20
151−280	32
281−500	50
501−1200	80
1201−3200	125

The number of controlled points on each selected sheet is determined depending on the total number of parcels with a length of 100 mm along the perimeter of the sheet at the table.5.

Table 5

The number of plots in the worksheet.	The number of controlled points on the sheet.	Rejection number
2−8	3	1
9−15	5	1
16−25	8	2
Correspond 26−50	8	2
51−90	13	2

The length of the perimeter is not a multiple of 100 mm, the end section of a length less than 100 mm is taken for one site.

Selected leaves are considered to be valid if the number of measurement results do not comply with the limit deviations, given in table.1, less than the acceptance number given in table.5.

Allowed the manufacturer the quality control of the surface and the size of the sheet carried out in the manufacturing process while ensuring compliance with quality tiling to the requirements of this standard.

Allowed the manufacturer if unsatisfactory result, control of each sheet of the party.

2.4. To check the chemical composition is taken two leaves from the party. Allowed the manufacturer to verify chemical composition to acquire a sample from the liquid metal.

2.5. To check flatness select the leaves in an amount of 2% of the party.

2.6. Testing inflection take two sheets at a mass party of up to 5000 kg and five sheets over 5000 kg.

2.7. If unsatisfactory test results sheets at least one of the indicators of chemical composition, inflection, flatness, a second test of the doubled sample. The results of repeated testing are spreading to the entire party.

3. TEST METHODS

3.1. The inspection of the surface of the sheets is carried out without the use of magnifying devices.

3.2. Measurement of the thickness of the sheets is carried out at a minimum distance of 100 mm from the end and 25 mm from the edge of the sheet with a micrometer according to GOST 6507.

Allowed to the manufacturer in the production process to control the thickness of the sheets, other means of measurement, to ensure the necessary accuracy.

Control the thickness of the sheets is carried out with a given probability of 96% (%).

The thickness of the sheets is measured on each selected sheet using the method of «blind» (maximum objectivity) according to GOST 18321.

The number of sheets in the batch (), EA, is calculated by the formula

,

where the weight of the batch, kg;

 — thickness of sheet, mm;

 — sheet width, mm;

 — material density, g/cm;

 — sheet length, mm

Number of controlled sections in the sheet ()., is calculated by the formula

.

The results of measuring the thickness of sheet and strip, do not correspond to the limit deviations, given in table.1, should not differ from the permissible by more than half of the tolerance field.

Measurement of the width and length of sheets is carried out with a ruler according to GOST 427 or measuring tape according to GOST 7502.

3.3. Determination of the chemical composition is carried out according to GOST 19251.0 — GOST 19251.6 or churchyard 17261 on the sample taken from each selected sheet according to GOST 24231.

If there is disagreement in the assessment of the chemical composition analysis is carried out according to GOST 19251.0 — GOST 19251.6.

3.4. Flatness of sheets and cosine of the cut is determined according to GOST 26877.

3.5. For testing break take one sample from each of the tested sheet. The test bend is carried out according to GOST 13813.

3.6. Allowed by agreement between manufacturer and consumer to use statistical methods to control the width, length and surface quality.

3.7. Allowed manufacturer to use other testing methods, providing the required accuracy set out in this standard. If there is disagreement in the definition of the indicator monitoring is carried out by the method specified in the standard.

4. TRANSPORTATION AND STORAGE

4.1. Leaves transporterowych all types of transport in covered vehicles in accordance with cargo carriage regulations applicable to transport of this species.

4.2. Sheets when shipping transporterowych in accordance with GOST 26653.

4.3. The leaves should be stored in covered premises. Transport and storage the sheets must be protected from mechanical damage, moisture and active chemical substances. Under these storage conditions, the properties of the sheets are not changed.

APPLICATION (reference). Theoretical mass of 1 m cold-rolled sheets

APP
Reference

Theoretical weight of 1 mof cold rolled sheets

Table 6

The thickness of sheet, mm	Theoretical weight 1 m, kg
0,15	Of 1.08
0,20	1,44
0,22	1,58
0,25	1,80
0,30	2,15
0,35	2,51
0,40	2,87
0,45	3,23
0,50	3,59
0,55	3,95
0,60	4,31
0,65	The 4.67
0,70	5,03
0,75	The 5.39
0,80	5,74
0,85	6,10
0,90	6,46
Of 1.00	7,18
1,25	8,97
1,50	10,80
1,80	12,90
Of 2.00	14,40
2,50	18,00
Of 3.00	21,50
3,50	25,10
Of 4.00	28,70
5,00	Of 35.90
6,00	43,10

When calculating the theoretical weight of the sheets of zinc is equal to 7.18 kg/DM.
(Changed edition, Rev. N 1).

The text of the document is verified by:
the official publication of the
M.: IPK Publishing house of standards, 1997