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Grade CuNi18Zn20
European Standard Steel Grade CW409J
Corresponding Standard EN 1654-1998
Copper and copper alloys - Strip for springs and connectors
Classification Copper and Copper Alloys
Properties Corrosion Resistance
Density 8.7 g/cm3
CuNi18Zn20 Chemical Element Composition Content (%)
Component Fe Mn Ni Cu Pb Sn Other Total More
Minimum Value - - 17 60 - - - Zn:余量
Maximum Value 0.3 0.5 19 63 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.
CuNi18Zn20 Mechanical Properties
condition Mark
Heat Treatment or Condition
Tensile Strength
σb
Mpa 		Yield Point
σs
Mpa 		Elongation or Extension Rate
δ
% 		Hardness
HBW 		Bending Strength σw
Mpa
Strip CuNi18Zn20-R500 R500 500~590 ≥(410) ≥3ⓐ ；≥5ⓑ
Strip CuNi18Zn20-H160 H160 HV: 160~190
Strip CuNi18Zn20-B370 B370 HV: (160)~(190) Elastic bending limit ≥370
Strip CuNi18Zn20-R580 R580 580~670 ≥(510) ≥2ⓑ
Strip CuNi18Zn20-H180 H180 HV: 180~210
Strip CuNi18Zn20-B460 B460 HV: (180)~(210) Elastic bending limit ≥460
Strip CuNi18Zn20-R640 R640 640~730 ≥(600)
Strip CuNi18Zn20-H200 H200 HV: 200~230
Approximate Comparison Table Cupper and cupper alloy
Germany European Standard
DIN EN/DIN W-Nr. EN Numerical Grade
CuNi18Zn20 2.0740 CuNi18Zn20 CW409J
CuNi18Zn20 Corresponding Standards(Same grade name, different standards)
1 EN 12163-1998
CuNi18Zn20 CW409J
2 EN 12166-1998
CuNi18Zn20 CW409J
3 EN 1654-1998
CuNi18Zn20 CW409J
4 EN 12166-2016
CuNi18Zn20 CW409J
5 DIN 17672-1-1983
CuNi18Zn20 2.0740
6 DIN EN 12163-1998
CuNi18Zn20 CW409J (2.0740)
7 DIN EN 12163-2016
CuNi18Zn20 CW409J
8 DIN 17671-1-1983
CuNi18Zn20 2.0740
9 DIN EN 12166-2016
CuNi18Zn20 CW409J
10 DIN EN 12166-1998
CuNi18Zn20 CW409J
11 EN 12163-2016
CuNi18Zn20 CW409J
12 DIN 2076-1984
CuNi18Zn20
13 EN 12167-2024
CuNi18Zn20 CW409J
14 DIN EN 12449-2019
CuNi18Zn20 CW409J
15 EN 12449-2023
CuNi18Zn20 CW409J

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