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Home Material GB /T 21652-2017
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Grade BZn15-20
China ISC T74600
Corresponding Standard GB /T 21652-2017
Copper and Copper Alloy Wire
Classification Copper and Copper Alloys
BZn15-20 Chemical Element Composition Content (%)
Component Fe C Si Mn P S Ni ① Cu As ② Pb Mg Bi ② Sb ② Other Total More
Minimum Value - - - - - - 13.5 62 - - - - - - Zn:余量
Maximum Value 0.5 0.03 0.15 0.3 0.005 0.01 16.5 65 0.01 0.02 0.05 0.002 0.002 0.9
"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.
BZn15-20 Mechanical Properties
Heat Treatment or Condition
Tensile Strength
σb
Mpa 		Elongation or Extension Rate
δ
%
0.1~0.2 软(O60) ≥345 A100mm
≥15
＞0.2~0.5 软(O60) ≥345 A100mm
≥20
＞0.5~2.0 软(O60) ≥345 A100mm
≥25
＞2.0~8.0 软(O60) ≥345 A100mm
≥30
＞8.0~13.0 软(O60) ≥345 A100mm
≥35
＞13.0~18.0 软(O60) ≥345 A
≥40
0.1~0.2 1/8硬(H00) 450~600 A100mm
≥12
＞0.2~0.5 1/8硬(H00) 435~570 A100mm
≥15
＞0.5~2.0 1/8硬(H00) 420~550 A100mm
≥20
＞2.0~8.0 1/8硬(H00) 410~520 A100mm
≥24
0.1~0.2 1/4硬(H01) 470~660 A100mm
≥10
＞0.2~0.5 1/4硬(H01) 460~620 A100mm
≥12
＞0.5~2.0 1/4硬(H01) 440~600 A100mm
≥14
＞2.0~8.0 1/4硬(H01) 420~570 A100mm
≥16
0.1~0.2 1/2硬(H02) 510~780 /
＞0.2~0.5 1/2硬(H02) 490~735 /
＞0.5~2.0 1/2硬(H02) 440~685 /
＞2.0~8.0 1/2硬(H02) 440~635 /
0.1~0.2 3/4硬(H03) 620~860 /
＞0.2~0.5 3/4硬(H03) 610~810 /
＞0.5~2.0 3/4硬(H03) 595~760 /
＞2.0~8.0 3/4硬(H03) 580~700 /
0.1~0.2 硬(H04) 735~980 /
＞0.2~0.5 硬(H04) 735~930 /
＞0.5~2.0 硬(H04) 635~880 /
＞2.0~8.0 硬(H04) 540~785 /
0.5~1.0 特硬(H06) ≥750 /
＞1.0~2.0 特硬(H06) ≥740 /
＞2.0~4.0 特硬(H06) ≥730 /
Approximate Comparison Table Wrought Cupronickel
China Japan United States International Organization for Standardization Russia United Kingdom
GB ISC JIS ASTM UNS ISO Numerical Grade GOST Commercial Grade BS EN/BS
BZn15-20 T74600 C7541
C75400 		63Cu-15Ni-22Zn C75400 CuNi15Zn21 C75400 МНЦ15-20 NS105 C75400
BZn15-20 Corresponding Standards(Same grade name, different standards)
1 GB /T 5231-2012
BZn15-20 T74600
2 GB /T 5231-2022
BZn15-20 T74600
3 GB /T 5231-2001
BZn15-20 15-20锌白铜
4 YS /T 649-2018
BZn15-20 T74600
5 GB /T 3114-2023
BZn15-20 T74600
6 GB /T 21652-2017
BZn15-20 T74600
7 GB /T 21652-2008
BZn15-20

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