GOST 4748-92

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  ГОСТ 4748-92

GOST 4748−92 and Strips of silicon-manganese bronze. Specifications

GOST 4748−92

Group В53

STATE STANDARD OF THE USSR

STRIPS AND STRIPS OF SILICON-MANGANESE BRONZE

Specifications

Silicon-manganese bronze strips and ribbons.
Specifications

GST 18 4000

Date of introduction 1993−01−01

INFORMATION DATA

1. DESIGNED AND MADE TC 106

DEVELOPERS

Y. M. leybov, PhD. tech. Sciences (head of subject);

O. M. Zueva, PhD. tech. Sciences

2 APPROVED AND put INTO EFFECT by the Decree of Committee of standardization and Metrology of the USSR from 20.02.92 N 170

3. REPLACE GOST 4748−70

4. REFERENCE NORMATIVE AND TECHNICAL DOCUMENTS

The designation of the reference document referenced	Item number
GOST 166−89	3.4
GOST 427−75	3.3
GOST 1497−84	3.7
GOST 2228−81	1.5.5
GOST 2991−85	1.5.5
GOST 3282−74	1.5.5, 1.5.7
GOST 3560−73	1.5.5, 1.5.7
GOST 5244−79	1.5.5
GOST 6507−90	3.3
GOST 7376−89	1.5.5
GOST 7502−89	3.4
GOST 7933−89	4.2
GOST 8273−75	1.5.5, 4.2
GOST 8828−89	1.5.5
GOST 9557−87	1.5.7
GOST 9569−79	1.5.5
GOST 9696−82	3.3
GOST 10198−91	1.5.5
GOST 10354−82	1.5.5
GOST 11701−84	3.7
GOST 14192−77	1.4.2
GOST 15027.1−77 — GOST 15027.14−77	3.1
GOST 15102−75	4.2
GOST 15846−79	1.5.5
GOST 18175−78	1.1
GOST 18242−72	2.4
GOST 18321−73	2.4
GOST 18477−79	4.2
GOST 20435−75	4.2
GOST 21140−88	1.5.5
GOST 21650−76	1.5.6
GOST 22235−76	4.1
GOST 24047−80	3.7
GOST 24231−80	3.1
GOST 24597−81	1.5.6
GOST 26663−85	1.5.6
GOST 26877−91	3.5
GOST 28798−90	3.3

5. REPRINTING. February 1997


This standard applies to cold rolled strips and tapes used for the manufacture of springs and other products.

The requirements of paragraphs 1.1, 1.2, 1.3.1, 1.4, 1.5, sections 2, 3, 4 are required.

1. TECHNICAL REQUIREMENTS

1.1. Strips and ribbons manufactured in accordance with the requirements of this standard for technological regulations approved in the prescribed manner.

Cold-rolled strips and strips made of silicon-manganese bronze brand Brkmc3−1 with the chemical composition according to GOST 18175.

1.2. Basic parameters and dimensions

1.2.1. The thickness of the strips and limit deviations of the thickness of the strips shall be as given in table.1.

Table 1

mm

The width of the stripes	Limit deviation on thickness
1,0	-0,08
1,2
1,5	-0,10
1,8
2,0	-0,11
2,5	-0,12
3,0	-0,14
3,5	-0,16
4,0	-0,18
4,5
5,0	-0,20
5,5
6,0
6,5	-0,25
7,0
8,0
9,0
10,0	-0,30

1.2.2. The width, spacing, width and maximum deviations in width depending on thickness shall be as given in table.2.

Table 2

mm

The interval width	Maximum deviation in width of strips with a width of
The width of the	up to 1.5 incl.	St. 1,5 up to 3.0 incl.	St. 3,0 to 5.0 incl.	St. 5,0 to 10.0 incl.
From 40 to 100 incl.	10	A 1.0	-1,5	-	-
SV. 100 «200 «	25	A 1.0	To 2.0	To 2.0	-5,0
«200» 300 «	50	To 2.0	Is 3.0	Is 3.0	-7,0

Notes:

1. Strip thickness 3.5 mm and more are manufactured with width from 100 to 300 mm.

2. Allowed for strips of width from 40 mm to 100 mm spacing width of 5 mm.

1.2.3. The strip is manufactured with a length from 400 to 2000 mm. Bands are made of random length, measuring with an interval of 100 mm and multiple of gauging length within off-gage.

1.2.4. Limit deviations in length for the strips of fixed lengths and multiple lengths shall not exceed minus 15 mm.

1.2.5. The thickness of the tapes and tolerances for thickness, normal and high accuracy shall be as given in table.3.

Table 3

mm

The width of the ribbons	Limit deviation on thickness of strips
normal accuracy	increased accuracy
0,05
0,06
0,07	-0,01
0,08	-
0,09
0,10
0,12	-0,02
0,15
0,18
0,20
0,22	-0,03	-0,02
0,25
0,30
0,35
0,40	-0,04	-0,03
0,45
0,50
0,55	-0,05	-0,04
0,60
0,65
0,70	-0,06	-0,05
0,75
0,80
0,85
0,90	-0,07
Of 1.00
1,10	-0,08	-0,06
1,20
1,30	-0,07
1,40
1,50	-0,09
1,60	-0,08
1,70	-0,10
1,80
Of 2.00	-0,11	-0,10

1.2.6. Tape is manufactured in widths from 10 to 300 mm inclusive. The dimensions of the strips and limit deviations on width depending on thickness shall be as given in table.4.

Table 4

mm

Belts width	Limit deviation width when the thickness of the strips
from 0.05 to 1.00 incl.	St. of 1.00 to 2.00 incl.
10, 12, 14, 16, 18, 20, 21, 24, 25, 26, 28, 30, 32, 33, 34, 35, 36, 38, 40, 42, 45, 48, 50, 55, 56, 60, 65, 70, 80, 90, 100, 110, 120, 125, 130, 150, 170, 175	-0,5	-0,8
190, 200, 220, 250, 280, 300	-0,8	A 1.0

Note. Tape thickness: up to 0.45 mm inclusive manufactured in the width from 10 to 300 mm thickness exceeding 0.45 mm width from 30 to 300 mm.

1.2.7. The length of the strips should be not less than 5 m can be manufactured in strips of length not less than 1 m in an amount of not more than 10% of the batch weight.

1.2.8. Theoretical weight of 1 mof strip is given in Appendix 1.

1.2.9. The legend of the strip is placed according to the scheme:

when the following abbreviations:

Method of manufacture:

cold-rolled	— D
Sectional shape:
rectangular	— PR
Precision manufacturing (only for tapes):
normal	— N
increased	— P
Condition:
soft	— M
semi-solid	— P
solid	— T
extra hard	— About
Length:
dimensional	— MD
dimensional	— KD
random	— ND

Dimensions are indicative only for the bands. For tapes only show off-gage length.

Instead of the missing data is «X», in addition to indicating the length (dimension).

Examples of symbols:

The semi-solid strip thickness of 1,2 mm, width 200 mm, length 500 mm dimensional bronze brand Brkmc3−1:

Strip DPRP 1,2х200х500 CD Brkmc3−1 GOST 4748−92

Tape normal precision manufacturing, rigid, with a thickness of 0.05 mm, a width of 100 mm bronze brand Brkmc3−1:

Tape DPRNT 0,05х100 ND Brkmc3−1 GOST 4748−92

1.3. Features

1.3.1. Basic version

1.3.1.1. The thickness of the strips and limit deviations of the thickness of the strips shall be as given in table.1.

1.3.1.2. The width of the strips and limit deviations on width of strips shall be as given in table.2.

1.3.1.3. Length of strips shall be as given in claim 1.2.3. Limit deviations for the length of the strip dimensional and multiple dimensional length must comply with paragraph 1.2.4.

1.3.1.4. The width of the ribbons, the normal precision of manufacture and tolerances for thickness shall be as given in table.3.

1.3.1.5. The width of the strips and limit deviations on width shall be as given in table.4.

1.3.1.6. Length of strips shall be as given in claim 1.2.7.

1.3.1.7. As the material and strips are made of soft, semi hard, hard and extra hard.

Solid tape is manufactured with a thickness up to 1.5 mm inclusive, extra hard — with a thickness to 1,2 mm inclusive.

Extra hard strip manufacture with thickness up to 6.0 mm inclusive.

1.3.1.8. The surface of the strip must be clean, free from contamination, hinder the inspection, smooth, captivity, cracks, shells, bubbles, delaminations, and dents. Allowed individual surface defects — nakoly, scratches and roughness, if it does not take the strip and tape at reference sweep for tolerances for thickness.

Allowed color of a tint, a local darkening, redness and traces of unburned lubricant (local spots of contamination).

Allowed the undulations, disappearing when bending the tape.

1.3.1.9. Strips should be trimmed evenly.

Wavy, krabovaya, creased and torn edges are not allowed.

Allowed minor burrs do not affect the use of the bands for the purpose.

At the ends of the rolls of tape allowed the individual nicks that do not impede the unwinding roll and does not display the ribbon for the limit deviations on width.

1.3.1.10. Camber strips shall not exceed 4 mm on 1 m of length for strips up to a length of 1600 mm including 5 mm on 1 m of length for strips over a length of 1600 mm.

1.3.1.11. The mechanical properties of the strip shall conform to the requirements given in table.5.

Table 5

The condition of the material	Thickness, mm	Temporary resistance , MPa (kgf/mm)	Elongation , %, not less than
Soft	From 0.10 to 0.15 incl.	-
SV. 0,15 to 0,45 incl.	At least 350 (36)	28
Of 0.50 or more	35
Semi-solid	From 0.10 to 0.15 incl.	-
SV. 0,15 to 0,45 incl.	470−590 (48−60)	5
Of 0.50 or more	10
Solid	From 0.10 to 0.15 incl.	-
SV. 0,15 to 0,45 incl.	590−760 (60−77)	2
Of 0.50 or more	5
Extra hard	From 0.10 and more	He at least 760 (77)	-

Note. Data limit of elasticity, elastic modulus, microhardness and Vickers hardness is given in Appendix 2.

1.3.2. Performance at the customer’s request

1.3.2.1. Strip thickness 1.0 and 1.2 mm are made with maximum deviation in thickness minus 0.07 mm, thickness of 1.8 mm / minus 0.10 mm.

1.3.2.2. Tape manufactures high precision thickness limit deviations, given in table.3.

1.3.2.3. Tape with a thickness of 0.50 mm produce width of 12 mm with a maximum deviation given in table.4.

1.3.2.4. Strips and ribbons manufactured with yield point in tension in a semi-solid state — 270−500 MPa (28−51 kgf/mm); solid — 500−740 MPa (51−75 kg/mm).

Thus the rupture strength and elongation shall be as given in table.5.

1.3.2.5. Allowed the requirements to the surface quality and edge to set the standards, approved in the prescribed manner.

1.3.3. Execution in coordination with the consumer

1.3.3.1. Strips and ribbons manufactured intermediate sizes in thickness and width with the limit deviations for the next larger size listed in the table.1, 2, 3, 4.

1.3.3.2. Strips and ribbons manufactured with the limit deviations on thickness other than shown in table.1 and 3.

1.3.3.3. Strips and ribbons are made from two-way marginal deviations in thickness. The maximum deviation in thickness is determined by agreement between the consumer and the manufacturer.

1.3.3.4. And strips are made longer than what is given in PP.1.2.3, 1.2.7. The maximum deviation in thickness, width, length, number of small logs, camber, requirements to the surface quality set by agreement between the consumer and the manufacturer.

1.3.3.5. Tapes are manufactured with specified camber. Normal camber of strips is determined by agreement between manufacturer and consumer.

1.3.3.6. Tape with a thickness of less than 0.1 mm are made with the regulated temporary resistance. The provisions of the interim resistance is determined by agreement between manufacturer and consumer.

1.3.3.7. Strips and ribbons manufactured with mechanical properties that differ from the given in table.5.

1.4. Marking

1.4.1. For each bundle of strips or strip and each roll of tape shall be securely attached or pasted in a conspicuous place a label indicating:

the trademark or name and trademark of manufacturer;

the legend of the strip;

batch number;

stamp (stamps) technical control rooms or the TCI controller.

1.4.2. Transport marking — according to GOST 14192 with the application of manipulation sign «Protect from moisture».

The site of application, method of execution of the transport marking, the method of attaching the label according to GOST 14192.

Allowed to affix directly to packaging.

1.5. Packaging

1.5.1. Strips should be folded up in packs, tape, rolled into coils. One roll may consist of several segments of tapes.

The winding needs to exclude plastic shape change roll under the force of gravity. Allowed winding the tapes on agreement between the consumer and the manufacturer with the use of cylindrical sleeves.

1.5.2. The packaging should protect the strip from mechanical damage during transportation and storage.

1.5.3. Strip of a thickness not exceeding 3 mm, stacked in bundles should be wrapped in two layers of paper and secure on both sides (top and bottom) with boards or wooden boards, the dimensions of which correspond to the width and length of the bundles, and tied in at least two areas or with cross band not less than 0, or 3х30 mm wire diameter not less than 2 mm.

Packs of strips of a thickness more than 3 mm is overlaid wooden boards or planks, but bandaged as described above.

The ends of the straps fasten in the lock, wire — stranding at least 5 turns.

Allowed strip thickness more than 3 mm is not associate in packs, if the mass of a single strip exceeds 40 kg.

1.5.4. Rolls of tape needs to be wrapped in one or two layers with paper and Packed in tight boxes with tight strip of wood chips or paper waste or corrugated cardboard, or other materials that protects the tape from damage.

Coils of strips with thickness more than 0.5 mm in front of the paper wrapper should be wrapped with tape size not less than 0,2 x 30 mm or a wire with a diameter of not less than 2 mm, the ends are fixed.

Allowed tying coils of strip of any material, ensure the integrity of the roll, according to normative-technical documentation.

Allowed for shipment in containers, ribbons and bands are packaged in boxes and tied in bundles, and to wrap or padding paper or other material according to normative-technical documentation, ensuring the quality safety strip.

Placement and mounting the strips in the containers should exclude the possibility of displacement of the strips in the container.

1.5.5. As a packaging means and materials can be used:

boxes of types I, II-1, II-2, III-l, III-2, III-3 according to GOST 2991, GOST 10198;

boards or wooden boards according to normative-technical documentation;

paper according to GOST 2228, GOST 8273, 9569 GOST, GOST 8828;

wood chips according to GOST 5244;

corrugated cardboard according to GOST 7376;

tape according to GOST 3560;

wire according to GOST 3282;

polyethylene film according to GOST 10354;

nonwoven materials according to normative-technical documentation, other types of packaging and packaging materials according to normative-technical documentation, with the exception of linen and cotton fabrics.

Dimensions of boxes — GOST 21140 or other regulatory-technical documentation.

Strips and ribbons to be sent to the far North and areas equated to them, must be Packed in accordance with the requirements of GOST 15846.

Allowed the use of other packaging materials by agreement between manufacturer and consumer.

1.5.6. Weight of cargo must not exceed 80 kg.

When mechanized loading and unloading cargo weight must not exceed 1250 kg.

The means of bonding of packages in the transport packets according to GOST 21650, weight parameter and dimensions of transport packages according to GOST 24597, GOST 26663.

1.5.7. Strips and ribbons, Packed in accordance with the requirements of paragraphs.1.5.3, 1.5.4, 1.5.5, formed into transport packets.

Packaging is carried out on pallets according to GOST 9557 or without pallets using bars section not less than 50x50 mm, length equal to width of package.

Transport packages must be wrapped in at least two areas or cross wire with a diameter of not less than 3 mm according to GOST 3282 or tape not less than 0,5h30 mm according to GOST 3560. The ends of the wrapping wire fasten cable at least five turns of tape to the castle.

1.5.8. In each box or container must be attached to packing list stating the information given in claim 1.4.1.

2. ACCEPTANCE

2.1. Strip and ribbon take parties. The party should consist of strips or tapes of the same size, one precision manufacturing, one state of the material shall be furnished in one document about quality that contains:

trademark or the name and trademark of manufacturer;

the symbol of the strip;

the results of mechanical testing (at the customer’s request);

the net weight of the batch;

batch number;

stamp (stamp) of the Department of technical control.

Allowed to issue a single document the quality of several batches of strips or tapes of the same size, the same brand of bronze shipped to one consumer.

2.2. The chemical composition determined on two bands or two rolls of tape, taken from the party, from every 1000 kg or less. Allowed the manufacturer by agreement with the consumer to set the rate of sampling for the determination of chemical composition.

Allowed the manufacturer to carry out the sampling from the molten metal.

2.3. Quality control of surface and edge strips, and the width and length subjected to each strip and each roll of tape of the party.

If unsatisfactory validation results at least one of the indicators of a strip or roll of marriage.

2.4. To control the thickness of the strip used single-stage normal sampling plan for the alternative characteristic in accordance with GOST 18242 with the acceptance level of defects is 4%. The selection of bands and of coils in the sample is carried out at a table.6 «blindly» (by the greatest objectivity) according to GOST 18321.

Table 6

The number of bands (rolls of tape) in the party.	The number of monitored lines (rolls of tapes) from the party.
4−25	3
26−90	13
91−150	20
151−280	32
281−500	50
501−1200	80
1201−3200	125

The number of bands in the party, the number of monitored sites on one lane, the length of tape in a roll to select the number of measurement points in the coil is carried out by the formulas given in section 3.3.

The sampling plan given in table.7 and 8.

Table 7

The number of sections in the band.	The number of measurement points in the strip.	Rejection number
4−25	3	1
26−90	13	2
91−150	20	3
151−280	32	4

Table 8

Tape length in roll, m	The number of controlled points per roll.	Rejection number
From 5 to 12 incl.	3	1
«13» 45 «	13	2
«46» 75 «	20	3
«75» 140 «	32	4
«141» 250 «	50	6

The number of controlled points on each selected lane is determined depending on the total number of parcels with a length of 100 mm along the perimeter strip in accordance with the table.7. If the perimeter is not a multiple of 100 mm, the end section of a length less than 100 mm is taken for one site.

Controlled runway is considered usable if the number of measurements that do not meet the requirements of paragraphs.1.2, 1.3.1.1, 1.3.2.1, 1.3.3.1, 1.3.3.2, less than the acceptance number given in table.7.

The number of monitored points in each selected coil is determined in accordance with table.8.

A controlled roll is considered usable if the number of measurement results that do not meet the requirements of paragraphs.1.2, 1.3.1.4, 1.3.2.2, 1.3.3.1, 1.3.3.2, less than the acceptance number given in table.8.

If unsatisfactory results of measuring at least one of the monitored lines or on one of the monitored coils of strips, the batch is rejected. Allowed the manufacturer to carry out continuous control of thickness of the strips and rolls of tape.

Customer’s request thickness control is carried out on each strip and each roll of the party.

2.5. Allowed the manufacturer the quality control of the surface and the dimensions of the strip carried out in the production process.

2.6. Camber is determined in a two-page or two rolls of tapes from the party.

2.7. For tensile testing from the party select three stripes or three rolls of tape from each 1000 kg or less. Allowed normal sample set by agreement between manufacturer and consumer.

2.8. Measurement of yield stress is carried out at the request of the consumer.

2.9. If unsatisfactory test results of at least one of the indicators is given in PP.2.6−2.8, it is carried out a re-test of the doubled sample taken from the same batch.

The results of repeated tests apply to the entire party.

2.10. The manufacturer is allowed to apply other rules of acceptance while ensuring the quality of the strip to the requirements of this standard.

3. CONTROL METHODS

3.1. To analyze the chemical composition of each selected strip or selected from each roll of ribbon is cut on the same model. Selection and preparation of samples for the determination of chemical composition is carried out according to GOST 24231.

Chemical composition analysis is carried out according to GOST 15027.1 — GOST 15027.14 or by other methods providing the required accuracy set by the standard.

If there is disagreement in the assessment of the chemical composition analysis is carried out according to GOST 15027.1 — GOST 15027.14.

3.2. Checking the quality of the surface and edges of belts and bands is carried out without the use of magnifying devices.

3.3. The thickness of the strips or tapes are measured with a micrometer according to GOST 6507, measuring the pressure head GOST 28798 or a multi-turn indicator according to GOST 9696.

The thickness of the strip is measured at a distance of not less than 100 mm from the end and not less than 10 mm from the edge. For tapes with a width of 20 mm or less, the measurement is performed in the middle.

Thickness control of strip is carried out by the statistical technique.

The thickness of the strip measured at each selected strip, or at each selected roll of tape at points located uniformly randomly on the perimeter of the strip or along the length of the roll.

The number of bands in the party of pieces is calculated using the formula

,

where the weight of the batch, kg;

 — strip thickness, mm;

 — band width, mm;

the length of the strip, mm;

 — material density, g/cm.

Number of controlled sections in the band in units is calculated by the formula

.

The results of measuring the thickness of the band, not the corresponding table.1, should not differ from the permissible by more than half of the pitch limit deviation, except for the strips manufactured in accordance with claim 1.3.2.1, thickness of 1.8 to 2.0 mm, for which the allowable difference should not be more than 0.06 mm, and except for strips with thickness from 5.5 to 8.0 mm inclusive, for which the allowable difference should not be more than 0.13 mm.

The length of the ribbon to select the number of controlled points in the roll on the table.8 in meters is calculated by the formula

,

where and are respectively the outer and inner diameters of the coil, measured with a ruler according to GOST 427, mm.

 — tape thickness, mm.

The results of measuring the thickness of strips of normal accuracy, does not meet the requirements given in table.3, should not differ from the permissible by more than half, the maximum deviations of strips of normal accuracy.

The results of measuring the thickness of the ribbon increased accuracy that do not correspond are shown in table.3, should not differ from the acceptable more than the value of the field limit deviations for ribbons of high precision.

Allowed to the manufacturer in the production process to control the thickness of the strip and tape other measurement tools ensuring required accuracy.

3.4. The width of the strip measured by Vernier caliper according to GOST 166, the length of the strip — measuring tape according to GOST 7502.

Each strip is a single width measurement at a minimum distance of 100 mm from the edge of the strip.

The measurement of the width of the tape is carried out at three sites: at both ends and in the middle of three measurements in each plot at a distance of not less than 1 m from one another.

3.5. The camber of the strip is measured according to GOST 26877 anywhere on the strip.

Camber can be measured by another method to ensure the required measurement accuracy. In case of disagreement, assessment of the camber is carried out according to GOST 26877.

3.6. Waviness of the edges of the tape test by bending it around a mandrel with a diameter of 100−200 mm. If the waviness in bending does not disappear, the roll of tape is rejected.

3.7. For tensile testing from each selected strip or each selected roll of tape is cut one sample in the direction of rolling. Sampling — the graveyard 24047.

Tensile test on strips of thickness less than 0.5 mm is carried out on flat samples of type I or type II, of a width of 12.5 mm with an initial estimated length according to GOST 11701.

When the width of the ribbon less than 12.5 mm allowed to test the samples of a type II churchyard 11701.

Tensile testing of the strip thickness from 0.5 to 3 mm is carried out on flat samples of type I or type II, of a width of 20 mm with an initial estimated length of the churchyard 11701.

When the width of the tape at least 20 mm is allowed to conduct tests on long specimens of type II according to GOST 11701.

Tensile test strips of a thickness of 3 mm and more is carried out according to GOST 1497 on flat samples of type I or type II width of 20 mm for strips with thickness up to 7 mm inclusive and a width of 30 mm for strips of a thickness more than 7 mm. the Initial gauge length of samples equal to 11.3 . Allowed in the measurement of yield strength to apply the same samples, and to measure strength and elongation.

3.8. Allowed the manufacturer to use other means and methods of tests to ensure the required accuracy set by the standard.

In the event of any dispute apply tools of measurement and methods of control established in the PP.3.2−3.6.

4. TRANSPORTATION AND STORAGE

4.1. Strip and ribbon transporterowych all types of transport in covered vehicles in accordance with cargo carriage regulations applicable to transport of this type, and conditions of loading and fastening of goods, approved by the Ministry of railroads of the USSR, GOST 22235.

4.2. It is allowed to transport and strip of containers according to GOST 18477 and GOST and GOST 15102 20435 or other normative and technical documentation, or carload shipments in the packaged form without packaging in boxes and alignment in bundles. Thus the strip or tape should be wrapped in paper according to GOST 8273 or padded cardboard according to GOST 7933.

4.3. Strip or tape is stored indoors, unpacked in conditions that ensure their safety. Under these conditions, the storage of consumer properties of the strip in storage is not changed.

ANNEX 1 (reference). THEORETICAL WEIGHT of 1 square meter of strip FROM SILICON-MANGANESE BRONZE

ANNEX 1
Reference

THEORETICAL WEIGHT of 1 mof strip FROM SILICON-MANGANESE BRONZE

Table 9

Thickness of strip, mm	Theoretical weight 1 m, kg
0,05	0,42
0,06	0,51
0,07	0,59
0,08	0,68
0,09	0,76
0,10	0,85
0,12	1,02
0,15	1,27
0,18	1.52 m
0,20	1,69
0,22	1,86
0,25	2,12
0,30	2.54 mm
0,35	2,96
0,40	3,39
0,45	3,81
0,50	4,24
0,55	Of 4.66
0,60	5,08
0,65	5,51
0,70	Of 5.93
0,75	6.35 mm
0,80	Of 6.78
0,85	7,20
0,90	The 7.62
Of 1.00	8,47
1,10	9,32
1,20	10,16
1,30	Of 11.01
1,40	11,86
1,50	Of 12.71
1,60	13,55
1,70	14,40
1,80	15,25
Of 2.00	16,94
2,5	21,18
3,0	25,41
3,5	29,65
4,0	33 to 83
4,5	38,12
5,0	42,35
5,5	46,59
6,0	50,82
6,5	55,06
7,0	52,29
8,0	67,76
9,0	76,23
10,0	84,70

Note. Theoretical mass calculated for the nominal thickness of the strip. The density of bronze is equal to 8.47 g/cm.

ANNEX 2 (informative). Estimates of the modulus of ELASTICITY, ELASTIC LIMIT AND HARDNESS of BRONZE STAMPS Brkmc3−1

ANNEX 2
Reference

Table 10

The condition of the material	Thickness, mm	The modulus of elasticity , MPa (kgs/mm)	The elastic limit in tension , MPa (kgf/mm)	The hardness, measured with a diamond pyramid under a load kgf/mm
g (on the device PMT-3)	g
Soft	Less than 0.5	-	-	80−140	-
0.5 and more	-	-	-	75−135
Semi-solid	Less than 0.5	130−290 (13−30)	140−200	-
0.5 and more	150−245 (15−25)	-	135−195
Solid	Less than 0.5	88200−118000 (9000−12000)	255−520 (26−53)	180−250	-
0.5 and more	235−440 (24−45)	-	183−235
Extra hard	Less than 0.5	SV. 520 (53)	SV. 240	-
0.5 and more	SV. 440 (45)	-	SV. 230

Note. The minimum value of the modulus of elasticity refer to the samples cut along the rolling direction, the maximum value for specimens cut across the direction of rolling.