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Home Material GB /T 21652-2017
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Grade BZn12-24
China ISC T76200
Corresponding Standard GB /T 21652-2017
Copper and Copper Alloy Wire
Classification Copper and Copper Alloys
BZn12-24 Chemical Element Composition Content (%)
Component Fe Mn Ni ① Cu Pb Sn Other Total More
Minimum Value - - 11 63 - - - Zn：余量
Maximum Value 0.3 0.5 13 66 0.03 0.03 0.8
"Other individual elements or other totals": The chemical composition includes elements not specified in the table. Analysis should only be conducted if these elements are suspected to be present, or if routine analysis suggests that their content may exceed the prescribed limits.
BZn12-24 Mechanical Properties
Heat Treatment or Condition
Tensile Strength
σb
Mpa 		Elongation or Extension Rate
δ
%
0.1~0.2 软(O60) ≥320 A100mm
≥15
＞0.2~0.5 软(O60) ≥320 A100mm
≥20
＞0.5~2.0 软(O60) ≥320 A100mm
≥25
＞2.0~8.0 软(O60) ≥320 A100mm
≥30
0.1~0.2 1/8硬(H00) 400~570 A100mm
≥12
＞0.2~0.5 1/8硬(H00) 380~550 A100mm
≥16
＞0.5~2.0 1/8硬(H00) 360~540 A100mm
≥22
＞2.0~8.0 1/8硬(H00) 340~520 A100mm
≥25
0.1~0.2 1/4硬(H01) 420~620 A100mm
≥6
＞0.2~0.5 1/4硬(H01) 400~600 A100mm
≥8
＞0.5~2.0 1/4硬(H01) 380~590 A100mm
≥12
＞2.0~8.0 1/4硬(H01) 360~570 A100mm
≥18
0.1~0.2 1/2硬(H02) 480~680 /
＞0.2~0.5 1/2硬(H02) 460~640 A100mm
≥6
＞0.5~2.0 1/2硬(H02) 440~630 A100mm
≥9
＞2.0~8.0 1/2硬(H02) 420~600 A100mm
≥12
0.1~0.2 3/4硬(H03) 550~800 /
＞0.2~0.5 3/4硬(H03) 530~750 /
＞0.5~2.0 3/4硬(H03) 510~730 /
＞2.0~8.0 3/4硬(H03) 490~630 /
0.1~0.2 硬(H04) 680~880 /
＞0.2~0.5 硬(H04) 630~820 /
＞0.5~2.0 硬(H04) 600~800 /
＞2.0~8.0 硬(H04) 580~700 /
0.5~4.0 特硬(H06) ≥720 /
BZn12-24 Corresponding Standards(Same grade name, different standards)
1 GB /T 5231-2012
BZn12-24 T76200
2 GB /T 5231-2022
BZn12-24 T76200
3 GB /T 3114-2023
BZn12-24 T76200
4 GB /T 21652-2017
BZn12-24 T76200

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