Grade CuNi1Si
European Standard Steel Grade CW109C
Corresponding Standard EN 12167-2024
Copper and copper alloys - Profiles and bars for general purposes
Classification Copper and Copper Alloys
Density 8.8 g/cm3
CuNi1Si Chemical Element Composition Content (%)
Component Fe Si Mn Ni Pb Other Total More
Minimum Value - 0.4 - 1 - - Cumin:Rem.
Maximum Value 0.2 0.7 0.1 1.6 0.02 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.
CuNi1Si Mechanical Properties
thickness
t
mm
Mark
Heat Treatment or Condition
Tensile Strength
σb
Mpa
Specified Plastic Yield Strength
Rp0.2
Mpa
Elongation or Extension Rate
δ
%
Hardness
HBW
3≤t≤10 CuNi1Si-R590 R590 ≥590 ≥540 ≥3(A100), ≥5(A11.3), ≥10(A)
3≤t≤30 CuNi1Si-R540 R540 ≥540 ≥470 ≥4(A100), ≥6(A11.3), ≥12(A)
10≤t≤40 CuNi1Si-R440 R440 ≥440 ≥300 ≥16(A)
3≤t≤10 CuNi1Si-H160 H160 160~210
3≤t≤30 CuNi1Si-H140 H140 140~190
10≤t≤40 CuNi1Si-H120 H120 120~180
All specifications CuNi1Si-M M As manufactured As manufactured As manufactured As manufactured
Test pieces shall be in accordance with EN ISO 6892-1:2019, except that 200 mm gauge length is not permitted.
Elongation requirements for rod of thickness or diameter equivalent to the cross sectional area:
ⓐ less than 4 mm (A100 mm);
ⓑ 4 mm up to and including 8 mm (A 11,3);
ⓒ greater than 8 mm (A);
1 Approximate Comparison Table cupronickel
China Japan United States International Organization for Standardization Germany France European Standard Russia
ISC JIS ASTM UNS ISO Numerical Grade DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade GOST
C19010 C1901
C19010
98Cu-1.5Ni-.5Si C19010 CuNi1Si C19010 CuNi1Si
(CuNi1.51Si)
CW109C
(2.0853)
CuNi1Si
CW109C
CuNi1Si CW109C МНК1.5-0.5
2 Approximate Comparison Table Cupper and cupper alloy
Germany European Standard
DIN EN/DIN W-Nr. EN Numerical Grade
CuNi1.5Si 2.0853 CuNi1Si CW109C

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