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C71580 Copper-nickel vs. S32950 Stainless Steel

C71580 copper-nickel belongs to the copper alloys classification, while S32950 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 C71580 copper-nickel and the bottom bar is S32950 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 75
260
Elastic (Young's, Tensile) Modulus, GPa 140
200
Elongation at Break, % 40
17
Poisson's Ratio 0.33
0.27
Shear Modulus, GPa 51
80
Shear Strength, MPa 230
480
Tensile Strength: Ultimate (UTS), MPa 330
780
Tensile Strength: Yield (Proof), MPa 110
550

Thermal Properties

Latent Heat of Fusion, J/g 230
300
Maximum Temperature: Mechanical, °C 260
1100
Melting Completion (Liquidus), °C 1180
1430
Melting Onset (Solidus), °C 1120
1390
Specific Heat Capacity, J/kg-K 400
480
Thermal Conductivity, W/m-K 39
16
Thermal Expansion, µm/m-K 15
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 4.7
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 4.7
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 41
17
Density, g/cm3 8.9
7.7
Embodied Carbon, kg CO2/kg material 5.1
3.4
Embodied Energy, MJ/kg 74
47
Embodied Water, L/kg 280
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
120
Resilience: Unit (Modulus of Resilience), kJ/m3 47
730
Stiffness to Weight: Axial, points 8.5
15
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 11
4.3
Thermal Shock Resistance, points 11
21

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.030
Chromium (Cr), % 0
26 to 29
Copper (Cu), % 65.5 to 71
0
Iron (Fe), % 0 to 0.5
60.3 to 69.4
Lead (Pb), % 0 to 0.050
0
Manganese (Mn), % 0 to 0.3
0 to 2.0
Molybdenum (Mo), % 0
1.0 to 2.5
Nickel (Ni), % 29 to 33
3.5 to 5.2
Nitrogen (N), % 0
0.15 to 0.35
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0
0 to 0.6
Sulfur (S), % 0
0 to 0.010
Zinc (Zn), % 0 to 0.050
0
Residuals, % 0 to 0.5
0