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ASTM B631 Class A vs. ASTM B477 Au-Ni-Ag

Both ASTM B631 class A and ASTM B477 Au-Ni-Ag are otherwise unclassified metals. There are 12 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is ASTM B631 class A and the bottom bar is ASTM B477 Au-Ni-Ag.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
95
Poisson's Ratio 0.3
0.41
Shear Modulus, GPa 85 to 86
34

Thermal Properties

Latent Heat of Fusion, J/g 160
80
Melting Completion (Liquidus), °C 2680 to 2690
1010
Specific Heat Capacity, J/kg-K 160
160
Thermal Expansion, µm/m-K 11
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40 to 47
14
Electrical Conductivity: Equal Weight (Specific), % IACS 25 to 29
7.5

Otherwise Unclassified Properties

Density, g/cm3 15
17

Common Calculations

Stiffness to Weight: Axial, points 8.5
3.1
Stiffness to Weight: Bending, points 14
8.9