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SAE-AISI M42 Steel vs. C72700 Copper-nickel

SAE-AISI M42 steel belongs to the iron alloys classification, while C72700 copper-nickel belongs to the copper alloys. There are 21 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI M42 steel and the bottom bar is C72700 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
120
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 78
44
Tensile Strength: Ultimate (UTS), MPa 810 to 2310
460 to 1070

Thermal Properties

Latent Heat of Fusion, J/g 270
210
Melting Completion (Liquidus), °C 1540
1100
Melting Onset (Solidus), °C 1490
930
Specific Heat Capacity, J/kg-K 450
380
Thermal Conductivity, W/m-K 20
54
Thermal Expansion, µm/m-K 12
17

Otherwise Unclassified Properties

Base Metal Price, % relative 30
36
Density, g/cm3 8.2
8.8
Embodied Carbon, kg CO2/kg material 7.4
4.0
Embodied Energy, MJ/kg 100
62
Embodied Water, L/kg 140
350

Common Calculations

Stiffness to Weight: Axial, points 14
7.4
Stiffness to Weight: Bending, points 24
19
Strength to Weight: Axial, points 28 to 79
14 to 34
Strength to Weight: Bending, points 24 to 48
15 to 26
Thermal Diffusivity, mm2/s 5.4
16
Thermal Shock Resistance, points 25 to 71
16 to 38

Alloy Composition

Carbon (C), % 1.1 to 1.2
0
Chromium (Cr), % 3.5 to 4.3
0
Cobalt (Co), % 7.8 to 8.8
0
Copper (Cu), % 0 to 0.25
82.1 to 86
Iron (Fe), % 76.3 to 81
0 to 0.5
Lead (Pb), % 0
0 to 0.020
Magnesium (Mg), % 0
0 to 0.15
Manganese (Mn), % 0.15 to 0.4
0.050 to 0.3
Molybdenum (Mo), % 9.0 to 10
0
Nickel (Ni), % 0 to 0.3
8.5 to 9.5
Niobium (Nb), % 0
0 to 0.1
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0.15 to 0.65
0
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
5.5 to 6.5
Tungsten (W), % 1.2 to 1.9
0
Vanadium (V), % 1.0 to 1.4
0
Zinc (Zn), % 0
0 to 0.5
Residuals, % 0
0 to 0.3