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C72700 Copper-nickel vs. SAE-AISI H21 Steel

C72700 copper-nickel belongs to the copper alloys classification, while SAE-AISI H21 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 H21 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
76
Tensile Strength: Ultimate (UTS), MPa 460 to 1070
720 to 1790

Thermal Properties

Latent Heat of Fusion, J/g 210
250
Melting Completion (Liquidus), °C 1100
1630
Melting Onset (Solidus), °C 930
1580
Specific Heat Capacity, J/kg-K 380
440
Thermal Conductivity, W/m-K 54
27
Thermal Expansion, µm/m-K 17
11

Otherwise Unclassified Properties

Base Metal Price, % relative 36
23
Density, g/cm3 8.8
8.5
Embodied Carbon, kg CO2/kg material 4.0
4.5
Embodied Energy, MJ/kg 62
68
Embodied Water, L/kg 350
72

Common Calculations

Stiffness to Weight: Axial, points 7.4
13
Stiffness to Weight: Bending, points 19
23
Strength to Weight: Axial, points 14 to 34
23 to 58
Strength to Weight: Bending, points 15 to 26
21 to 38
Thermal Diffusivity, mm2/s 16
7.1
Thermal Shock Resistance, points 16 to 38
24 to 59

Alloy Composition

Carbon (C), % 0
0.28 to 0.36
Chromium (Cr), % 0
3.0 to 3.8
Copper (Cu), % 82.1 to 86
0 to 0.25
Iron (Fe), % 0 to 0.5
87.6 to 93.8
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
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
0.15 to 0.5
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 5.5 to 6.5
0
Tungsten (W), % 0
8.5 to 10
Vanadium (V), % 0
0.3 to 0.6
Zinc (Zn), % 0 to 0.5
0
Residuals, % 0 to 0.3
0