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Grade CuNi2Si
Germany W-Nr. 2.0855
Corresponding Standard DIN 17672-1-1983
Wrought copper and copper alloys bars；Properties.
Classification Copper and Copper Alloys
Properties Strength
Density 8.8 g/cm3
CuNi2Si Chemical Element Composition Content (%)
Component Si Mn Ni Other Total More
Minimum Value 0.5 - 1.6 - Cu:余量
Maximum Value 0.8 0.8 2.5 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.
CuNi2Si 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
Extruded material (P); Size by agreement 2.0855.08 Extrusion or Hot Forging P (.08) No Specified Mechanical Properties No Specified Mechanical Properties - -
Round material; d≤90 2.0855.40 Solution F26(.40) ≥260 ≥60 ≥35(A5) ≈70
Square material, hexagonal material; d ≤ 75 2.0855.40 Solution F26(.40) ≥260 ≥60 ≥35(A5) ≈70
Flat material; d ≤ 40 2.0855.40 Solution F26(.40) ≥260 ≥60 ≥35(A5) ≈70
Round material; d≤90 2.0855.60 Solution + artificial aging F49(.60) ≥490 ≥340 ≥15(A5) ≈160
Square material, hexagonal material; d ≤ 75 2.0855.60 Solution + artificial aging F49(.60) ≥490 ≥340 ≥15(A5) ≈160
Flat material; d ≤ 40 2.0855.60 Solution + artificial aging F49(.60) ≥490 ≥340 ≥15(A5) ≈160
Round material; d≤30 2.0855.53 Solid Solution + Cold Work Hardening F41 (.53) ≥410 ≥340 ≥8(A5) ≈140
Square material, hexagonal material; d ≤ 27 2.0855.53 Solid Solution + Cold Work Hardening F41 (.53) ≥410 ≥340 ≥8(A5) ≈140
Round material; d≤30 2.0855.73 Solution heat treatment + cold working hardening + artificial aging F64(.73) ≥640 ≥590 ≥10(A5) ≈190
Square material, hexagonal material; d ≤ 27 2.0855.73 Solution heat treatment + cold working hardening + artificial aging F64(.73) ≥640 ≥590 ≥10(A5) ≈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 Cupper and cupper alloy
Germany European Standard
DIN EN/DIN W-Nr. EN Numerical Grade
CuNi2Si 2.0855 CuNi2Si CW111C
CuNi2Si Corresponding Standards(Same grade name, different standards)
1 EN 12163-1998
CuNi2Si CW111C
2 EN 12166-1998
CuNi2Si CW111C
3 EN 1654-1998
CuNi2Si CW111C
4 EN 12166-2016
CuNi2Si CW111C
5 DIN 17672-1-1983
CuNi2Si 2.0855
6 DIN EN 12163-1998
CuNi2Si CW111C (2.0855)
7 DIN EN 12163-2016
CuNi2Si CW111C
8 DIN EN 12166-2016
CuNi2Si CW111C
9 DIN EN 12166-1998
CuNi2Si CW111C
10 DIN 17666-1983
CuNi2Si 2.0855
11 EN 12163-2016
CuNi2Si CW111C
12 EN 12167-2024
CuNi2Si CW111C
13 DIN EN 12449-2019
CuNi2Si CW111C
14 EN 12449-2023
CuNi2Si CW111C

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