Grade CuNi12Zn24
Germany W-Nr. CW403J
Old Grade
Corresponding Standard DIN EN 12163-1998
Copper and copper alloys – Rod for general purposes
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
diameter/width across-flats
d
mm
Mark
Heat Treatment or Condition
Tensile Strength
σb
Mpa
Yield Point
σs
Mpa
Elongation or Extension Rate
δ
%
Hardness
HBW
2<d≤50 CuNi12Zn24-R380 R380 ≥380 ≈270* ≥28(A100),≥33(A11.3),≥38(A)
2<d≤50 CuNi12Zn24-H090 H090 HB: 90~130;
HV: 95~135
2<d≤40 CuNi12Zn24-R450 R450 ≥450 ≈300* ≥8(A100),
≥10(A11.3),
≥12(A)
2<d≤40 CuNi12Zn24-H130 H130 HB: 130~160;
HV: 135~165
2<d≤10 CuNi12Zn24-R540 R540 ≥540 ≈450* ≥2*(A100),
≥3*(A11.3),
≥5(A)
2<d≤10 CuNi12Zn24-H160 H160 HB: 160~190;
HV: 170~200
2<d≤4 CuNi12Zn24-R640 R640 ≥640 ≈550*
2<d≤4 CuNi12Zn24-H190 H190 HB: ≥190;
HV: ≥200
2<d≤50 CuNi12Zn24-M M No specification No specification No specification No specification
New and Old Grade Replacement List
Approximate Comparison Table Cupper and cupper alloy
Germany European Standard
DIN EN/DIN W-Nr. EN Numerical Grade
CuNi12Zn24 2.0730 CuNi12Zn24 CW403J

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