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ASTM B631 Class C vs. R30556 Alloy

ASTM B631 class C belongs to the otherwise unclassified metals classification, while R30556 alloy belongs to the iron alloys. There are 16 material properties with values for both materials. Properties with values for just one material (17, in this case) are not shown.

For each property being compared, the top bar is ASTM B631 class C and the bottom bar is R30556 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180 to 190
210
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 66 to 71
81

Thermal Properties

Latent Heat of Fusion, J/g 140 to 150
300
Melting Completion (Liquidus), °C 2090 to 2230
1420
Specific Heat Capacity, J/kg-K 180
450
Thermal Conductivity, W/m-K 450 to 490
11
Thermal Expansion, µm/m-K 14
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 55 to 63
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 36 to 43
1.9

Otherwise Unclassified Properties

Density, g/cm3 13 to 14
8.4
Embodied Carbon, kg CO2/kg material 55 to 59
8.7
Embodied Energy, MJ/kg 860 to 920
130

Common Calculations

Stiffness to Weight: Axial, points 7.4 to 7.6
14
Stiffness to Weight: Bending, points 14
23
Thermal Diffusivity, mm2/s 180 to 200
2.9