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Grade CuNi12Zn24
European Standard Steel Grade CW403J
Corresponding Standard EN 1654-1998
Copper and copper alloys - Strip for springs and connectors
Classification Copper and Copper Alloys
Density 8.7 g/cm3
CuNi12Zn24 Chemical Element Composition Content (%)
Component Fe Mn Ni 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 0.2
"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.
CuNi12Zn24 Mechanical Properties
condition Mark
Heat Treatment or Condition
Tensile Strength
σb
Mpa 		Yield Point
σs
Mpa 		Elongation or Extension Rate
δ
% 		Hardness
HBW
Strip CuNi12Zn24-R490 R490 490~580 ≥400 ≥5ⓐ ；≥6ⓑ
Strip CuNi12Zn24-H150 H150 HV: 150~180
Strip CuNi12Zn24-R550 R550 550~640 ≥480 ≥3ⓑ
Strip CuNi12Zn24-H170 H170 HV: 170~200
Strip CuNi12Zn24-R620 R620 620~710 ≥580 ≥2ⓑ
Strip CuNi12Zn24-H190 H190 HV: 190~220
Approximate Comparison Table Copper and Copper Alloy
Germany European Standard
DIN EN/DIN W-Nr. EN Numerical Grade
CuNi12Zn24 2.0730 CuNi12Zn24 CW403J
CuNi12Zn24 Corresponding Standards(Same grade name, different standards)
1 EN 12163-1998
CuNi12Zn24 CW403J
2 EN 12166-1998
CuNi12Zn24 CW403J
3 EN 1654-1998
CuNi12Zn24 CW403J
4 EN 12166-2016
CuNi12Zn24 CW403J
5 DIN 17672-1-1983
CuNi12Zn24 2.0730
6 DIN EN 12163-1998
CuNi12Zn24 CW403J (2.0730)
7 DIN EN 12163-2016
CuNi12Zn24 CW403J
8 DIN 17671-1-1983
CuNi12Zn24 2.0730
9 DIN EN 12166-2016
CuNi12Zn24 CW403J
10 DIN EN 12166-1998
CuNi12Zn24 CW403J
11 EN 12163-2016
CuNi12Zn24 CW403J
12 EN 12167-2024
CuNi12Zn24 CW403J
13 DIN EN 12449-2019
CuNi12Zn24 CW403J
14 EN 12449-2023
CuNi12Zn24 CW403J

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