GB/T 2529-1989 Copper Conductive Plate GB/T2529-1989 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Copper sheets fot electrical conduction purposeSubject content and scope of application
GB 2529--89
Replaces GB2529-81
This standard specifies the product classification, technical requirements, test methods, inspection rules and packaging of copper conductive sheets. This standard is applicable to pure copper sheets for manufacturing conductive busbars in smelting, electrochemical, electroplating and other industrial sectors. 2 Reference standards
GB3048
GB 5121
GB5231
GB6397
GB8888
3 Product classification
Metal tensile test method
Metal bending test method
Test method for resistivity of metal conductor materials of wire and cable Chemical analysis method of copper
Processed copper chemical composition and product shape
Metal tensile test specimen
Heavy non-ferrous metal processing product packaging, marking, transportation and storage Brand, state, specification
The brand, state and specification of the plate shall comply with the provisions of Table 1 Table 1
Hot rolled (R)
Soft (M)
Hard (Y)
Note: The supply status must be indicated in the contract, otherwise it shall be supplied in the hot rolled state. 3.2 Dimensions and allowable deviations
3.2.1 The thickness and allowable deviations of the plates shall be in accordance with the provisions of Table 2. China National Nonferrous Metals Industry Corporation approved 388 on February 23, 1989
50～400
≥1000
1990-03-01 implementation
Hot-rolled plate width
50～100
100～400
Jingtong grade
GB2529—89
50~100
Cold-rolled plate width
≥100~~200
Thickness allowable deviation
Ordinary grade
Higher grade
Note: ① When the purchaser requires positive or negative deviation, the value is twice the value in the table. ②The deviation accuracy of plate thickness must be specified in the contract, otherwise it will be supplied as ordinary grade. The width, length and allowable deviation of the plate shall be in accordance with the provisions of Table 3. 3. 2. 2
Allowable deviation of width
Ordinary grade
Higher grade
Ordinary grade
1000～3000
Higher grade
±. 0. 10
200-400
Ordinary grade
Length tolerance
Ordinary grade
Higher gradewwW.bzxz.Net
Higher grade
3.2.3 The plate should be straight, but slight waves are allowed. The unevenness of the plate in the length direction should not exceed 20mm per meter. 3.2.4 The edge of the plate should be straight, without cracks or curling. Slight burrs are allowed. The bevel of the sheared plate should not make the width and length of the plate exceed the tolerance.
3.2.5 The side curvature of the plate, It shall comply with the provisions of Table 4 Table 4
Side curvature.mm/m
Ordinary grade
3.3 Marking example
Higher grade
A hard, higher grade copper conductive plate made of T2 with a thickness of 10mm, a width of 200mm and a length of 3000mm is marked as: Copper conductive plate T2Y higher grade 10×200×3000 GB2529---89 Technical requirements
4.1 Chemical composition
The chemical composition of the plate shall comply with the provisions of GB5231. 4.2 Mechanical properties
The tensile test requirements of the plate shall be carried out only when specified in the contract, and the test results shall comply with the provisions of Table 5. 8
4.3 Process performance
GB2529-89
Tensile strength
Not less than
Elongation:
If the purchaser has requirements and indicates it in the contract, hot-rolled plates and cold-rolled soft plates can be sampled at room temperature along the rolling direction for bending tests. Plates with a thickness of less than and equal to 5mm, without a bending core radius, should be bent 180°, and there should be no cracks at the bend. Plates with a thickness greater than 5mm, whose bending core radius is equal to the plate thickness, should be bent 180°, and there should be no cracks at the bend. 4.4 Physical properties
If the purchaser has special requirements and indicates it in the contract, the electrical properties test of the plate can be carried out, and the resistivity at 20℃ should comply with the provisions of Table 6.
4.5 Surface quality
4.5.1 The surface of the plate should be clean and should not have cracks, peeling, inclusions, bubbles and folds. Resistivity, mm2/m
Not more than
0. 017 241
0.017 774
The plate fracture should not have delamination, and local scratches, spots, pits, wrinkles, copper oxide, embossing and roller marks are allowed, which do not make the plate thickness exceed the allowable deviation.
4.5.2 The plate should be supplied after pickling, but the plate with a length greater than 2000mm can be supplied without pickling. 5 Test methods
5.1 The arbitration analysis method of the chemical composition of the plate shall be carried out in accordance with the provisions of GB5121. 5.2 The tensile test method shall be carried out in accordance with the provisions of GB228. 5.3 The bending test method shall be carried out in accordance with the provisions of GB232. 5.4 The resistivity test method shall be carried out in accordance with the provisions of GB3048. 5.5 The plate size shall be measured with a measuring tool of corresponding accuracy. 5.6 The plate shall be inspected for appearance, shape and surface quality with a moon sight. 6 Inspection rules
6.1 Inspection and acceptance
6.1.1 The plates shall be inspected and accepted by the supplier's technical supervision department, and the product quality shall be guaranteed to comply with the provisions of this standard. 6.1.2 After receiving the product, the buyer shall conduct a re-inspection in accordance with the provisions of this standard. If the re-inspection result does not comply with the provisions of this standard, the buyer shall submit it to the supplier within three months from the date of receipt of the product, and the supplier and buyer shall negotiate to resolve it. 6.2 Batches
The plates shall be submitted for inspection in batches, and each batch shall consist of plates of the same specifications and status. 3
6.3 Inspection items
GB 2529:89
Each batch of plates shall be inspected for chemical composition, external dimensions and surface quality. 6.4 Sampling location and number of samples
6.4.1 During the melting and casting process, the supplier shall randomly select one sample from each furnace for chemical composition inspection. 6.4.2 The buyer shall randomly select one sample from each batch of plates for chemical composition inspection. 6.4.3 For the tensile test of the plate, two plates shall be taken from each batch, and a sample shall be taken from each plate along the rolling direction. The samples shall comply with the provisions of P04 and P05 samples in Table 10 of GB6397.
6.4.4 The thickness of the plate shall be measured at a distance of not less than 200mm from the end and not less than 10mm from the edge. The thickness deviation outside the measurement range shall not be used as a basis for scrapping.
6.4.5 For the bending test, two plates shall be taken from each batch, and a sample shall be taken from each plate along the rolling direction. 6.4.6 For the resistivity test, two plates shall be taken from each batch, and a sample shall be taken from each plate. 6.4.7 The external dimensions and surface quality of the plates shall be measured one by one. 6.5 Repeated test
Even if one sample fails the test, double the samples should be taken from the batch to retest the failed items. If there is still one sample that fails the retest, the whole batch shall be scrapped or the supplier shall check each one of them. The qualified ones shall be accepted in a separate batch. 7 Packaging, marking, transportation and storage
Packaging, marking, transportation and storage shall be carried out in accordance with the provisions of GB8888. Additional remarks:
This standard was proposed by the Standard and Metrology Institute of China Nonferrous Metals Industry Corporation. This standard was drafted by Northwest Copper Processing Plant. The main drafter of this standard is Ren Yuanliang.
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