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SAE-AISI H21 Steel vs. C72150 Copper-nickel

SAE-AISI H21 steel belongs to the iron alloys classification, while C72150 copper-nickel belongs to the copper alloys. There are 21 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI H21 steel and the bottom bar is C72150 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
150
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 76
55
Tensile Strength: Ultimate (UTS), MPa 720 to 1790
490

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Melting Completion (Liquidus), °C 1630
1210
Melting Onset (Solidus), °C 1580
1250
Specific Heat Capacity, J/kg-K 440
410
Thermal Conductivity, W/m-K 27
22
Thermal Expansion, µm/m-K 11
14

Otherwise Unclassified Properties

Base Metal Price, % relative 23
45
Density, g/cm3 8.5
8.9
Embodied Carbon, kg CO2/kg material 4.5
6.1
Embodied Energy, MJ/kg 68
88
Embodied Water, L/kg 72
270

Common Calculations

Stiffness to Weight: Axial, points 13
9.1
Stiffness to Weight: Bending, points 23
20
Strength to Weight: Axial, points 23 to 58
15
Strength to Weight: Bending, points 21 to 38
15
Thermal Diffusivity, mm2/s 7.1
6.0
Thermal Shock Resistance, points 24 to 59
18

Alloy Composition

Carbon (C), % 0.28 to 0.36
0 to 0.1
Chromium (Cr), % 3.0 to 3.8
0
Copper (Cu), % 0 to 0.25
52.5 to 57
Iron (Fe), % 87.6 to 93.8
0 to 0.1
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 0.15 to 0.4
0 to 0.050
Nickel (Ni), % 0 to 0.3
43 to 46
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0.15 to 0.5
0 to 0.5
Sulfur (S), % 0 to 0.030
0
Tungsten (W), % 8.5 to 10
0
Vanadium (V), % 0.3 to 0.6
0
Zinc (Zn), % 0
0 to 0.2
Residuals, % 0
0 to 0.5