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C72700 Copper-nickel vs. SAE-AISI M34 Steel

C72700 copper-nickel belongs to the copper alloys classification, while SAE-AISI M34 steel belongs to the iron 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 C72700 copper-nickel and the bottom bar is SAE-AISI M34 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
200
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 44
77
Tensile Strength: Ultimate (UTS), MPa 460 to 1070
800 to 2170

Thermal Properties

Latent Heat of Fusion, J/g 210
270
Melting Completion (Liquidus), °C 1100
1540
Melting Onset (Solidus), °C 930
1500
Specific Heat Capacity, J/kg-K 380
450
Thermal Conductivity, W/m-K 54
24
Thermal Expansion, µm/m-K 17
12

Otherwise Unclassified Properties

Base Metal Price, % relative 36
32
Density, g/cm3 8.8
8.2
Embodied Carbon, kg CO2/kg material 4.0
9.5
Embodied Energy, MJ/kg 62
140
Embodied Water, L/kg 350
150

Common Calculations

Stiffness to Weight: Axial, points 7.4
14
Stiffness to Weight: Bending, points 19
24
Strength to Weight: Axial, points 14 to 34
27 to 74
Strength to Weight: Bending, points 15 to 26
23 to 46
Thermal Diffusivity, mm2/s 16
6.7
Thermal Shock Resistance, points 16 to 38
25 to 67

Alloy Composition

Carbon (C), % 0
0.85 to 0.92
Chromium (Cr), % 0
3.5 to 4.0
Cobalt (Co), % 0
7.8 to 8.8
Copper (Cu), % 82.1 to 86
0 to 0.25
Iron (Fe), % 0 to 0.5
71.3 to 76.5
Lead (Pb), % 0 to 0.020
0
Magnesium (Mg), % 0 to 0.15
0
Manganese (Mn), % 0.050 to 0.3
0.15 to 0.4
Molybdenum (Mo), % 0
7.8 to 9.2
Nickel (Ni), % 8.5 to 9.5
0 to 0.3
Niobium (Nb), % 0 to 0.1
0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
0.2 to 0.45
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 5.5 to 6.5
0
Tungsten (W), % 0
1.4 to 2.1
Vanadium (V), % 0
1.9 to 2.3
Zinc (Zn), % 0 to 0.5
0
Residuals, % 0 to 0.3
0