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Grade CuNi3Si1
European Standard Steel Grade CW112C
Corresponding Standard EN 12163-1998
Copper and copper alloys — Rod for general purposes
Classification Copper and Copper Alloys
Density 8.8 g/cm3
CuNi3Si1 Chemical Element Composition Content (%)
Component Fe Si Mn Ni Pb Other Total More
Minimum Value - 0.8 - 2.6 - - Cu:余量
Maximum Value 0.2 1.3 0.1 4.5 0.02 0.5
"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.
CuNi3Si1 Mechanical Properties
diameter
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 CuNi3Si1-R300 Solution heat treatment; R300 ≥300 ≈110* ≥20(A100)，
≥25(A11.3)，
≥30(A)
2<d≤80 CuNi3Si1-H070 Solution heat treatment; H070 HB: 70~100；
HV: 75~105
2<d≤30 CuNi3Si1-R580 Solution heat treatment + cold working; R580 ≥580 ≈550* ≥5(A100)，
≥6(A11.3)，
≥8(A)
2<d≤30 CuNi3Si1-H160 Solution heat treatment + cold working; H160 HB: 160~210；
HV: 170~220
30<d≤50 CuNi3Si1-R520 Solution heat treatment + cold working; R520 ≥520 ≈480* ≥8(A)
30<d≤50 CuNi3Si1-H150 Solution heat treatment + cold working; H150 HB: 150~200；
HV: 155~205
50<d≤80 CuNi3Si1-R450 Solution heat treatment + cold working; R450 ≥450 ≈390* ≥10(A)
50<d≤80 CuNi3Si1-H135 Solution heat treatment + cold working; H135 HB: 135~185；
HV: 140~190
2<d≤80 CuNi3Si1-R690 Solution heat treatment + precipitation hardening; R690 ≥690 ≈570* ≥6(A100)，
≥8(A11.3)，
≥10(A)
2<d≤80 CuNi3Si1-H170 Solution heat treatment + precipitation hardening; H170 HB: 170~220；
HV: 180~230
2<d≤30 CuNi3Si1-R800 Solution heat treatment + cold working + precipitation hardening; R800 ≥800 ≈780* ≥6(A100)，
≥8(A11.3)，
≥10(A)
2<d≤30 CuNi3Si1-H200 Solution heat treatment + cold working + precipitation hardening; H200 HB: ≥200；
HV: ≥210
30<d≤50 CuNi3Si1-R750 Solution heat treatment + cold working + precipitation hardening; R750 ≥750 ≈710* ≥10(A
30<d≤50 CuNi3Si1-H190 Solution heat treatment + cold working + precipitation hardening; H190 HB: ≥190；
HV: ≥200
50<d≤80 CuNi3Si1-R700 Solution heat treatment + cold working + precipitation hardening; R700 ≥700 ≈630* ≥10(A
50<d≤80 CuNi3Si1-H180 Solid Solution Treatment + Cold Work + Precipitation Hardening; H180 HB: ≥180；
HV: ≥190
2<d≤80 CuNi3Si1-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 Bronze
China Japan United States International Organization for Standardization France European Standard Russia
GB ISC JIS ASTM UNS ISO Numerical Grade NF EN/NF EN Numerical Grade GOST
QSi1-3 T64720 C6471
C64710 		96Cu-3Ni-1Si C64710 CuNi3Si1 C64710 CuNi3Si1
C64710 		CuNi3Si1 CW112C БрКН1-3
2 Approximate Comparison Table Copper and Copper Alloy
Germany European Standard
DIN EN/DIN W-Nr. EN Numerical Grade
CuNi3Si 2.0857 CuNi3Si1 CW112C
CuNi3Si1 Corresponding Standards(Same grade name, different standards)
1 EN 12163-1998
CuNi3Si1 CW112C
2 DIN EN 12163-1998
CuNi3Si1 CW112C (2.0857)

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