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ASTM B631 Class B vs. Nickel 718

ASTM B631 class B belongs to the otherwise unclassified metals classification, while nickel 718 belongs to the nickel alloys. There are 16 material properties with values for both materials. Properties with values for just one material (19, in this case) are not shown.

For each property being compared, the top bar is ASTM B631 class B and the bottom bar is nickel 718.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Poisson's Ratio 0.31
0.29
Shear Modulus, GPa 78 to 79
75

Thermal Properties

Latent Heat of Fusion, J/g 150
310
Melting Completion (Liquidus), °C 2460 to 2480
1340
Specific Heat Capacity, J/kg-K 170
450
Thermal Conductivity, W/m-K 450
11
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 50 to 53
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 32 to 34
1.5

Otherwise Unclassified Properties

Density, g/cm3 14
8.3
Embodied Carbon, kg CO2/kg material 49
13
Embodied Energy, MJ/kg 760
190

Common Calculations

Stiffness to Weight: Axial, points 8.1
13
Stiffness to Weight: Bending, points 14
23
Thermal Diffusivity, mm2/s 190
3.0