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C70700 Copper-nickel vs. EN 1.4669 Stainless Steel

C70700 copper-nickel belongs to the copper alloys classification, while EN 1.4669 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is C70700 copper-nickel and the bottom bar is EN 1.4669 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 73
260
Elastic (Young's, Tensile) Modulus, GPa 120
200
Elongation at Break, % 39
28
Poisson's Ratio 0.34
0.27
Shear Modulus, GPa 46
78
Shear Strength, MPa 220
500
Tensile Strength: Ultimate (UTS), MPa 320
780
Tensile Strength: Yield (Proof), MPa 110
450

Thermal Properties

Latent Heat of Fusion, J/g 220
290
Maximum Temperature: Mechanical, °C 220
1030
Melting Completion (Liquidus), °C 1120
1420
Melting Onset (Solidus), °C 1060
1370
Specific Heat Capacity, J/kg-K 390
480
Thermal Conductivity, W/m-K 59
15
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 12
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 34
13
Density, g/cm3 8.9
7.7
Embodied Carbon, kg CO2/kg material 3.4
2.6
Embodied Energy, MJ/kg 52
38
Embodied Water, L/kg 300
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
190
Resilience: Unit (Modulus of Resilience), kJ/m3 51
510
Stiffness to Weight: Axial, points 7.6
14
Stiffness to Weight: Bending, points 19
25
Strength to Weight: Axial, points 10
28
Strength to Weight: Bending, points 12
24
Thermal Diffusivity, mm2/s 17
4.0
Thermal Shock Resistance, points 12
21

Alloy Composition

Carbon (C), % 0
0 to 0.045
Chromium (Cr), % 0
21.5 to 24
Copper (Cu), % 88.5 to 90.5
1.6 to 3.0
Iron (Fe), % 0 to 0.050
65.2 to 74.8
Manganese (Mn), % 0 to 0.5
1.0 to 3.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 9.5 to 10.5
1.0 to 3.0
Nitrogen (N), % 0
0.12 to 0.2
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Residuals, % 0 to 0.5
0