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GB/T 5584 consists of the following four parts under the general title Rectangular copper or aluminium and its alloy wires for electrical purposes:
—Part 1: General;
—Part 2: Rectangular copper and copper alloy wire;
—Part 3: Aluminium rectangular conductor;
—Part 4: Strip copper conductor.
This is Part 2 of GB/T 5584.
This part is developed in accordance with the rules given in GB/T 1.1-2009.
This part replaces GB/T 5584.2-2009 Rectangular copper or aluminium and its alloy wires for electrical purposes—Part 2: Rectangular copper and copper alloy wire, and the following main technical changes have been made with respect to GB/T 5584.2-2009:
——The technical requirements for copper alloy rectangular wire are added (see Clause 3 hereof);
——The performance requirements for semi-hard copper rectangular wire are added (see Clause 3 hereof);
——The performance requirements for springback angle of soft copper rectangular wire are added (see 3.5 hereof).
This Part was proposed by China Electrical Equipment Industry Association.
This part is under the jurisdiction of SAC/TC 422 National Technical Committee on Bare Wires of Standardization Administration of China.
The previous editions of this part are as follows:
——GB/T 5584.2-1985 and GB/T 5584.2-2009.
Rectangular copper or aluminium and its alloy wires for electrical purposes—
Part 2: Rectangular copper and copper alloy wire
1 Scope
This part of GB/T 5584 specifies the technical requirements, test and inspection rules and delivery requirements for the rectangular copper and copper alloy wire.
This part is applicable to the rectangular copper and copper alloy wires for electrical purposes.
2 Normative references
The following documents are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 228.1-2010 Metallic materials—Tensile testing—Part 1: Method of test at room temperature
GB/T 3048.2 Test methods for electrical properties of electric cables and wires—Part 2: Test of electrical resistivity of metallic materials
GB/T 4074.3 Test methods for winding wires—Part 3: Mechanical properties
GB/T 4909.2 Test methods for bare wires—Part 2: Measurement of dimensions
GB/T 4909.3 Test methods for bare wires—Part 3: Tensile test
GB/T 4909.6 Test methods for bare wires—Part 6: Bend test—Single bend test
GB/T 5121 (all parts) Methods for chemical analysis of copper and copper alloys
GB/T 5584.1-2020 Rectangular copper or aluminium and its alloy wires for electrical purposes—Part 1: General
3 Technical requirements
3.1 Chemical compositions
The chemical compositions of rectangular copper and copper alloy wires shall meet those specified in Table 1, and the mechanical and electrical properties of rectangular copper and copper alloy wires shall meet the requirements of this part.
Table 1 Chemical compositions of rectangular copper and copper alloy wire
Product category Mass fraction/%
Cu + Ag, ≥ Ag
TB 99.90 —
TH11B 99.90 0.020–0.050
TH12B 99.90 0.050–0.100 (excluding 0.050)
Note: In case of any special requirement for chemical compositions, it shall be determined through negotiation between the supplier and the purchaser.
3.2 Dimension and deviation
The dimension and deviation of rectangular copper and copper alloy wires shall meet the requirements of GB/T 5584.1-2020.
3.3 Tensile strength and elongation
3.3.1 The tensile strength and elongation of soft, hard and extra-hard copper rectangular wires shall meet those specified in Table 2.
3.3.2 The mechanical properties of semi-hard copper rectangular wires shall meet those specified in Table 3.
3.3.3 The tensile strength and elongation of copper alloy rectangular wires shall meet those specified in Table 4.
Table 2 Performance requirements for soft, hard and extra-hard copper rectangular wires
Narrow edge, mm State
R Y1 Y2
Maximum tensile strength, MPa Minimum elongation
% Maximum DC resistivity at 20°C, Ω·mm2/m Tensile strength, MPa Minimum elongation
% Maximum DC resistivity at 20°C, Ω·mm2/m Minimum tensile strength, MPa Minimum elongation, % Maximum DC resistivity at 20°C, Ω·mm2/m
0.80 ≤ a ≤ 2.00 275 30.0 0.017 241 275–373 1.5 0.017 770 373 0.4 0.017 770
2.00 < a ≤ 4.00 255 34.0 255–333 2.0 333 0.7
4.00 < a ≤ 10.00 245 36.0 245–304 3.0 304 1.7
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Table 3 Performance requirements for semi-hard copper rectangular wires
State Specified plastic elongation strength Rp0.2, MPa Minimum elongation, % Maximum DC resistivity at 20°C, Ω·mm2/m
Y1/2 100 < Rp0.2 ≤ 180 20 0.017 241
180 < Rp0.2 ≤ 220 15 0.017 391
220 < Rp0.2 ≤260 15 0.017 544
Table 4 Performance requirements for copper alloy rectangular wires
Materials and product category State Minimum tensile strength, MPa Minimum elongation, % Maximum DC resistivity at 20°C, Ω·mm2/m
TH11B Y1 250 15 0.017 593
TH12B 0.017 774
3.4 Bending
3.4.1 The edge b of hard, semi-hard and extra-hard copper and copper alloy rectangular wires shall be bent 90°, and the surface shall be free from cracks. The diameter of the bending cylinder shall be selected according to the dimension of edge a, which shall meet those specified in Table 5.
Foreword i
1 Scope
2 Normative references
3 Technical requirements
4 Test and inspection rules
5 Delivery requirements
