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Grade H70
China ISC T26100
Corresponding Standard GB /T 21652-2017
Copper and Copper Alloy Wire
Classification Copper and Copper Alloys
H70 Chemical Element Composition Content (%)
Component Fe ① P ② S ② Cu As ② Pb Sb ② Other Total More
Minimum Value - - - 68.5 - - - - Zn:余量
Maximum Value 0.1 0.005 0.002 71.5 0.005 0.03 0.002 0.3
"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.
H70 Mechanical Properties
Heat Treatment or Condition
Tensile Strength
σb
Mpa 		Elongation or Extension Rate
δ
%
0.05~0.25 软(O60) ≥375 A100mm
≥18
＞0.25~1.0 软(O60) ≥355 A100mm
≥25
＞1.0~2.0 软(O60) ≥335 A100mm
≥30
＞2.0~4.0 软(O60) ≥315 A100mm
≥35
＞4.0~6.0 软(O60) ≥295 A100mm
≥40
＞6.0~13.0 软(O60) ≥275 A100mm
≥45
＞13.0~18.0 软(O60) ≥275 A
≥50
0.05~0.25 1/8硬(H00) ≥385 A100mm
≥18
＞0.25~1.0 1/8硬(H00) ≥365 A100mm
≥20
＞1.0~2.0 1/8硬(H00) ≥350 A100mm
≥24
＞2.0~4.0 1/8硬(H00) ≥340 A100mm
≥28
＞4.0~6.0 1/8硬(H00) ≥330 A100mm
≥33
＞6.0~8.5 1/8硬(H00) ≥320 A100mm
≥35
0.05~0.25 1/4硬(H01) ≥400 A100mm
≥10
＞0.25~1.0 1/4硬(H01) ≥380 A100mm
≥15
＞1.0~2.0 1/4硬(H01) ≥370 A100mm
≥20
＞2.0~4.0 1/4硬(H01) ≥350 A100mm
≥25
＞4.0~6.0 1/4硬(H01) ≥340 A100mm
≥30
＞6.0~8.5 1/4硬(H01) ≥330 A100mm
≥32
0.05~0.25 1/2硬(H02) ≥410 /
＞0.25~1.0 1/2硬(H02) ≥390 A100mm
≥5
＞1.0~2.0 1/2硬(H02) ≥375 A100mm
≥10
＞2.0~4.0 1/2硬(H02) ≥355 A100mm
≥12
＞4.0~6.0 1/2硬(H02) ≥345 A100mm
≥14
＞6.0~8.5 1/2硬(H02) ≥340 A100mm
≥16
0.05~0.25 3/4硬(H03) 540~735 /
＞0.25~1.0 3/4硬(H03) 490~685 /
＞1.0~2.0 3/4硬(H03) 440~635 /
＞2.0~4.0 3/4硬(H03) 390~590 /
＞4.0~6.0 3/4硬(H03) 345~540 /
＞6.0~8.5 3/4硬(H03) 340~520 /
0.05~0.25 硬(H04) 735~930 /
＞0.25~1.0 硬(H04) 685~885 /
＞1.0~2.0 硬(H04) 635~835 /
＞2.0~4.0 硬(H04) 590~785 /
＞4.0~6.0 硬(H04) 540~735 /
＞6.0~8.5 硬(H04) 490~685 /
0.1~0.25 特硬(H06) ≥800 /
＞0.25~1.0 特硬(H06) ≥780 /
＞1.0~2.0 特硬(H06) ≥750 /
＞2.0~4.0 特硬(H06) ≥720 /
＞4.0~6.0 特硬(H06) ≥690 /
Approximate Comparison Table Brass
China Japan United States International Organization for Standardization Germany European Standard Russia
GB JIS ASTM UNS ISO Numerical Grade DIN EN/DIN W-Nr. EN Numerical Grade GOST
H70 C2600 70Cu-30Zn C26000 CuZn30 C26000 CuZn30 C26000
2.0265 		CuZn30 CW505L Л70
H70 Corresponding Standards(Same grade name, different standards)
1 GB /T 5231-2012
H70 T26100
2 GB /T 2040-2017
H70 T26100
3 GB /T 5231-2022
H70 T26100
4 GB /T 5231-2001
H70 70黄铜
5 GB /T 3114-2023
H70 T26100
6 GB /T 21652-2017
H70 T26100
7 GB /T 21652-2008
H70

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