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Grade CuNi1Si
European Standard Steel Grade CW109C
Corresponding Standard EN 12163-1998
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 - - Cu:余量
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
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≤80 CuNi1Si-R240 Solution heat treatment; R240 ≥240 ≈90* ≥25(A100)，
≥30(A11.3)，
≥35(A)
2<d≤80 CuNi1Si-H050 Solution heat treatment; H050 HB: 50~75；
HV: 55~80
2<d≤30 CuNi1Si-R410 Solid Solution Treatment + Cold Work; R410 ≥410 ≈320* ≥5(A100)，
≥7(A11.3)，
≥9(A)
2<d≤30 CuNi1Si-H105 Solution heat treatment + cold working; H105 HB: 105~150；
HV: 110~155
30<d≤50 CuNi1Si-R350 Solution heat treatment + cold working; R350 ≥350 ≈280* ≥12(A)
30<d≤50 CuNi1Si-H095 Solution heat treatment + cold working; H095 HB: 95~140；
HV: 100~145
50<d≤80 CuNi1Si-R300 Solution heat treatment + cold working; R300 ≥300 ≈210* ≥16(A)
50<d≤80 CuNi1Si-H085 Solution heat treatment + cold working; H085 HB: 85~130；
HV: 90~135
2<d≤80 CuNi1Si-R440 Solution heat treatment + precipitation hardening; R440 ≥440 ≈320* ≥12(A100)，
≥15(A11.3)，
≥17(A)
2<d≤80 CuNi1Si-H120 Solution heat treatment + precipitation hardening; H120 HB: 120~170；
HV: 125~175
2<d≤30 CuNi1Si-R590 Solution heat treatment + cold working + precipitation hardening; R590 ≥590 ≈570* ≥8(A100)，
≥10(A11.3)，
≥12(A)
2<d≤30 CuNi1Si-H160 Solution heat treatment + cold working + precipitation hardening; H160 HB: ≥160；
HV: ≥170
30<d≤50 CuNi1Si-R540 Solution heat treatment + cold working + precipitation hardening; R540 ≥540 ≈450* ≥10(A)
30<d≤50 CuNi1Si-H140 Solution heat treatment + cold working + precipitation hardening; H140 HB: ≥140；
HV: ≥145
50<d≤80 CuNi1Si-R500 Solution heat treatment + cold working + precipitation hardening; R500 ≥500 ≈420* ≥10(A)
50<d≤80 CuNi1Si-H125 Solution heat treatment + cold working + precipitation hardening; H125 HB: ≥125；
HV: ≥130
2<d≤80 CuNi1Si-M M No specification No specification No specification No specification
① Material condition names and designations:
H - Hardness (Brinell hardness or Vickers hardness), with the suffix number indicating the hardness value.
R - Tensile strength, with the suffix number indicating the minimum tensile strength value.
M - Manufactured without specified mechanical properties. Refer to standard EN 1173-2008.
② A100, A11.3, A - Gauge length.
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
CuNi1Si Corresponding Standards(Same grade name, different standards)
1 EN 12163-1998
CuNi1Si CW109C
2 EN 12166-1998
CuNi1Si CW109C
3 EN 12166-2016
CuNi1Si CW109C
4 DIN EN 12163-1998
CuNi1Si CW109C (CuNi1.5Si) (2.0853)
5 DIN EN 12163-2016
CuNi1Si CW109C
6 DIN EN 12166-2016
CuNi1Si CW109C
7 DIN EN 12166-1998
CuNi1Si CW109C
8 EN 12163-2016
CuNi1Si CW109C
9 EN 12167-2024
CuNi1Si CW109C

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