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Grade CuNi18Zn20
Germany W-Nr. 2.0740
Corresponding Standard DIN 17672-1-1983
Wrought copper and copper alloys bars；Properties.
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
diameter/thickness
d
mm		 Mark
Heat Treatment or Condition
Tensile Strength
σb
Mpa 		Yield Point
σs
Mpa 		Elongation or Extension Rate
δ
% 		Hardness
HBW
Round bar; d≤10 2.0740.10 Soft F39 (.10) 390~470 ≤290 ≥40(A5) ≈95
Square bar, hexagonal bar; d≤8 2.0740.10 Soft F39 (.10) 390~470 ≤290 ≥40(A5) ≈95
Round bars; 3≤d＜40 2.0740.26 Half hard F47(.26) 470~540 ≥340 ≥22(A5) ≈135*
Square bars, Hexagonal bars; 3≤d＜30 2.0740.26 Half hard F47(.26) 470~540 ≥340 ≥22(A5) ≈135*
Round material; 2 ≤ d < 10 2.0740.30 Hard F54 (.30) 540~640 ≥440 ≥5(A5) ≈165
Square material, hexagonal material; 2 ≤ d < 8 2.0740.30 Hard F54 (.30) 540~640 ≥440 ≥5(A5) ≈165
Round bars; 1≤d＜4 2.0740.32 Toughness and hardness F64 (.32) ≥640 ≥570 - ≈190
New and Old Grade Replacement List
Corresponding Standard Grade
DIN 17672-1-1983
Grade
Germany W-Nr.
DIN EN 12163-1998
Grade
Germany W-Nr.
Old Grade
DIN EN 12163-2016
Grade
Germany W-Nr.
Approximate Comparison Table Copper and Copper 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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