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C71640 Copper-nickel vs. SAE-AISI M3 Class 2 Steel

C71640 copper-nickel belongs to the copper alloys classification, while SAE-AISI M3 class 2 steel belongs to the iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is C71640 copper-nickel and the bottom bar is SAE-AISI M3 class 2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 140
200
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 52
77
Tensile Strength: Ultimate (UTS), MPa 490 to 630
770 to 2210

Thermal Properties

Latent Heat of Fusion, J/g 240
260
Melting Completion (Liquidus), °C 1180
1620
Melting Onset (Solidus), °C 1120
1570
Specific Heat Capacity, J/kg-K 410
440
Thermal Conductivity, W/m-K 29
26
Thermal Expansion, µm/m-K 15
12

Otherwise Unclassified Properties

Base Metal Price, % relative 40
25
Density, g/cm3 8.9
8.3
Embodied Carbon, kg CO2/kg material 5.0
12
Embodied Energy, MJ/kg 73
180
Embodied Water, L/kg 280
110

Common Calculations

Stiffness to Weight: Axial, points 8.7
13
Stiffness to Weight: Bending, points 20
23
Strength to Weight: Axial, points 15 to 20
26 to 74
Strength to Weight: Bending, points 16 to 18
22 to 45
Thermal Diffusivity, mm2/s 8.2
7.2
Thermal Shock Resistance, points 16 to 21
24 to 69

Alloy Composition

Carbon (C), % 0
1.2 to 1.3
Chromium (Cr), % 0
3.8 to 4.5
Copper (Cu), % 61.7 to 67.8
0 to 0.25
Iron (Fe), % 1.7 to 2.3
75.8 to 82.3
Lead (Pb), % 0 to 0.050
0
Manganese (Mn), % 1.5 to 2.5
0.15 to 0.4
Molybdenum (Mo), % 0
4.8 to 6.5
Nickel (Ni), % 29 to 32
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
0.2 to 0.45
Sulfur (S), % 0
0 to 0.030
Tungsten (W), % 0
5.0 to 6.8
Vanadium (V), % 0
2.8 to 3.8
Zinc (Zn), % 0 to 1.0
0
Residuals, % 0 to 0.5
0