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This standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 21652-2008 Copper and copper alloy wire and the following main changes have been made with respect to GB/T 21652-2008:
——Nine designations, i.e., TU0, TMg0.2, TMg0.5, HB90-0.1, H66, QSn4-0.3, QSn8-0.3, BZn12-24 and BZn12-37-1.5, and corresponding technical requirements are added; five designations, i.e., TCr1-0.18, TCr1, HSb61-0.8-0.5, HBi60-1.3 and HSb60-0.9, and corresponding technical requirements are deleted;
——New requirements are given for the states of wires of various designations according to GB/T 29094-2012;
——The diameter (across flat) range of wires is extended and modified; the specification of H70, H68 and H66 soft brass wires is extended from 0.05mm~8.5mm to 0.05mm~18.0mm, that of HPb59-3 lead brass wire from 1.0mm~8.5mm to 1.0mm~10.0mm, that of QSi3-1 soft and 1/4 hard silicon bronze wires from 0.1mm~8.5mm to 0.1mm~18.0mm, and that of BZn15-20 and BZn18-20 soft copper-nickel-zinc alloy wires from 0.1mm~8.0mm to 0.1mm~18.0mm;
——The diameter (or across flat) precision of wires is improved in relation to that stated in the former standard;
——Technical requirements and corresponding test method for the grain size of wires are added;
——The weight values of wire coils are larger in relation to those stated in 2008 edition.
This standard was proposed by the China Nonferrous Metals Industry Association.
This standard is under the jurisdiction of the National Technical Committee on Nonferrous Metals of Standardization Administration of China (SAC/TC 243).
The previous edition of this standard is as follows:
——GB/T 21652-2008.
Copper and copper alloy wire
1 Scope
This standard specifies the requirements, test methods, inspection rules, marking, packaging, transportation, storage and quality certificate, and order (or contract) contents of copper and copper alloy wires.
This standard is applicable to round, square and hexagonal copper and copper alloy wires (hereinafter referred to as "wires").
2 Normative references
The following documents for the application of this document are essential. Any dated reference, just dated edition applies to this document. For undated references, the latest edition of the normative document (including any amendments) applies.
GB/T 228.1-2010 Metallic materials - Tensile testing - Part 1: Method of test at room temperature
GB/T 230.1 Metallic materials - Rockwell hardness test - Part 1: Test method (scales A, B, C, D, E, F, G, H, K, N, T)
GB/T 231.1 Metallic materials - Brinell hardness test - Part 1: Test method
GB/T 238 Metallic materials - Wire - Reverse bend test
GB/T 239.1 Metallic materials - Wire - Part 1: Simple torsion test
GB/T 239.2 Metallic materials - Wire - Part 2: Reverse torsion test
GB/T 2828.1 Sampling procedures for inspection by attributes - Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection
GB/T 2976 Metallic materials - Wire - Wrapping test
GB/T 4340.1 Metallic materials - Vickers hardness test - Part 1: Test method
GB/T 5121 (all parts) Methods for chemical analysis of copper and copper alloys
GB/T 5231 Designation and chemical composition of wrought copper and copper alloys
GB/T 8888 Wrought heavy non-ferrous metal products - Packing, marking, transportation, storing and certificate of quality
GB/T 10567.2 Wrought copper and copper alloys - Detection of residual stress - Ammonia test
GB/T 10573 Tensile testing method for fine wire of non-ferrous metals
GB/T 23606 Copper-hydrogen embrittlement test method
GB/T 26303.2 Measuring methods for dimensions and shapes of wrought copper and copper alloy - Part 2: Rod, wire and profile
YS/T 336 Method of fracture test for tube and rod of copper and copper alloys, nickel and nickel alloys
YS/T 347 Copper and copper alloys - Estimation of average grain size
YS/T 482 Methods for analysis of copper and copper alloys - The atomic emission spectrometry
YS/T 483 Methods for analysis of copper and copper alloys - X-ray fluorescence spectrometric (wavelength dispersive)
YS/T 668 The sampling method of physical and chemical testing for copper and copper alloys
YS/T 815 Preparation method of test pieces for mechanical and technological properties of copper and copper alloys
3 Requirements
3.1 Product classification
3.1.1 Designation, state and specification
The designation, state and specification of products shall meet those specified in Table 1. The cross-section shape of products is shown in Figure 1.
3.1.2 Mark examples
Product mark shall be represented in the sequence of the product name, standard No., designation (code), state, precision and specification, and mark examples are as follows:
Example 1: round wire made of H65(C27000), in H01 state, high precision grade and with diameter of 3.0mm is marked as:
Round wire GB/T 21652-H65H01 high-φ3.0
Or round wire GB/T 21652-C27000H01 high-φ3.0
Example 2: square wire made of BZn12-26(T76210), in H02 state, ordinary grade and with a across flat of 4.5mm is marked as:
Square wire GB/T 21652-BZn12-26H02-α4.5
Or square wire GB/T 21652-T76210H02-α4.5
Example 3: hexagonal wire made of QSn6.5-0.1(T51500), in H04 state, high precision grade and with across flat of 5.0mm is marked as:
Hexagonal wire GB/T 21652-QSn6.5-0.1H04 high-s5.0
Or hexagonal wire GB/T 21652-T51500H04 high-s5.0
a) Round b) Square c) Hexagonal
Keys:
φ——diameter of circle;
α——side length of square;
s——across flat of hexagon.
Figure 1 Schematic diagram for cross-section shapes of wires
Table 1 Designation, state and specification of product
Classification Designation Code State Diameter (across flat) /mm
Oxygen-free copper TU0 T10130 Soft (O60), hard (H04) 0.05~8.0
TU1 T10150
TU2 T10180
Pure copper T2 T11050 Soft (O60), 1/2 hard (H02), hard (H04) 0.05~8.0
T3 T11090
Cadmium copper TCd1 C16200 Soft (O60), hard (H04) 0.1~6.0
Magnesium copper TMg0.2 T18658 Hard (H04) 1.5~3.0
TMg0.5 T18664 Hard (H04) 1.5~7.0
Common brass H95 C21000 Soft (O60), 1/2 hard (H02), hard (H04) 0.05~12.0
H90 C22000
H85 C23000
H80 C24000
H70 T26100 Soft (O60), 1/8 hard (H00), 1/4 hard (H01), 1/2 hard (H02), 3/4 hard (H03), hard (H04), special hard (H06) 0.05-8.5
Special hard: 0.1~6.0
Soft state: 0.05~18.0
H68 T26300
H66 C26800
H65 C27000 Soft (O60), 1/8 hard (H00), 1/4 hard (H01), 1/2 hard (H02), 3/4 hard (H03), hard (H04), special hard (H06) 0.05~13
Special hard: 0.05~4.0
H63 T27300
H62 T27600
Lead brass HPb63-3 T34700 Soft (O60), 1/2 hard (H02), hard (H04) 0.5~6.0
HPb62-0.8 T35100 1/2 hard (H02), hard (H04) 0.5~6.0
HPb61-1 C37100 1/2 hard (H02), hard (H04) 0.5~8.5
HPb59-1 T38100 Soft (O60), 1/2 hard (H02), hard (H04) 0.5~6.0
HPb59-3 T38300 1/2 hard (H02), hard (H04) 1.0~10.0
Boron brass HB90-0.1 T22130 Hard (H04) 1.0~12.0
Tin brass HSn62-1 T46300 Soft (O60), hard (H04) 0.5~6.0
HSn60-1 T46410
Manganese brass HMn62-13 T67310 Soft (O60), 1/4 hard (H01), 1/2 hard (H02), 3/4 hard (H03), hard (H04) 0.5~6.0
Tin bronze QSn4-3 T50800 Soft (O60), 1/4 hard (H01), 1/2 hard (H02), 3/4 hard (H03) 0.1~8.5
Hard (H04) 0.1~6.0
QSn5-0.2 C51000 Soft (O60), 1/4 hard (H01), 1/2 hard (H02), 3/4 hard (H03), hard (H04) 0.1~8.5
QSn4-0.3 C51100
QSn6.5-0.1 T51510
QSn6.5-0.4 T51520
QSn7-0.2 T51530
QSn8-0.3 C52100
QSn15-1-1 T52500 Soft (O60), 1/4 hard (H01), 1/2 hard (H02), 3/4 hard (H03), hard (H04) 0.5~6.0
QSn4-4-4 T53500 1/2 hard (H02), hard (H04) 0.1~8.5
Chromium bronze QCr4.5-2.5-0.6 T55600 Soft (O60), solid solution heat treatment + precipitation heat treatment (TF00)
Solid solution heat treatment + cold working (hard) + precipitation heat treatment (TH04) 0.5~6.0
Aluminum bronze QAl7 C61000 1/2 hard (H02), hard (H04) 1.0~6.0
QAl9-2 T61700 H(H04) 0.6~6.0
Silicon bronze QSi3-1 T64730 1/2 hard (H02), 3/4 hard (H03), hard (H04) 0.1~8.5
Soft (O60), 1/4 hard (H01) 0.1~18.0
Ordinary copper-
nickel alloy B19 T71050 Soft (O60), hard (H04) 0.1~6.0
Copper-nickel-
iron alloy BFe10-1-1 T70590 Soft (O60), hard (H04) 0.1~6.0
BFe30-1-1 T71510
Copper-nickel-
manganese alloy BMn3-12 T71620 Soft (O60), hard (H04) 0.05~6.0
BMn40-1.5 T71660
Copper-nickel-
zinc alloy BZn9-29 T76100 Soft (O60), 1/8 hard (H00), 1/4 hard (H01), 1/2 hard (H02), 3/4 hard (H03), hard (H04), special hard (H06) 0.1~8.0
Special hard: 0.5~4.0
BZn12-24 T76200
BZn12-26 T76210
BZn15-20 T74600 Soft (O60), 1/8 hard (H00), 1/4 hard (H01), 1/2 hard (H02), 3/4 hard (H03), hard (H04), special hard (H06) 0.1~8.0
Special hard: 0.5~4.0
Soft state: 0.1-18.0
BZn18-20 T76300
BZn22-16 T76400 Soft (O60), 1/8 hard (H00), 1/4 hard (H01), 1/2 hard (H02), 3/4 hard (H03), hard (H04), special hard (H06) 0.1~8.0
Special hard: 0.1~4.0
BZn25-18 T76500
BZn40-20 T77500 Soft (O60), 1/4 hard (H01), 1/2 hard (H02), 3/4 hard (H03), hard (H04) 1.0~6.0
BZn12-37-1.5 C79860 1/2 hard (H02), hard (H04) 0.5~9.0
Note: Wires of other designations, specifications or states may be supplied subject to negotiation between the supplier and the purchaser.
3.2 Chemical composition
The chemical composition of different designations of wires shall meet the requirements of GB/T 5231.
3.3 Overall dimension and permissible deviation
3.3.1 The diameter (or across flat) of wires and its permissible deviation shall meet those specified in Table 2.
Foreword I
1 Scope
2 Normative references
3 Requirements
4 Test methods
5 Inspection rules
6 Marking, packaging, transportation, storage and quality certificate
7 Order (or contract) contents
