MakeItFrom.com
Menu (ESC)
Home>Other Metal AlloyUp Three>Precious Metal Electrical Contact AlloyUp Two>ASTM B631 Class AUp One

ASTM B631 Class A vs. ASTM B817 Type II

ASTM B631 class A belongs to the otherwise unclassified metals classification, while ASTM B817 type II belongs to the titanium alloys. There are 12 material properties with values for both materials. Properties with values for just one material (19, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is ASTM B631 class A and the bottom bar is ASTM B817 type II.

ASTM B631 Class A Silver-Tungsten Electrical Contact AlloyASTM B817 Type II Titanium
Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
100
Poisson's Ratio 0.3
0.32
Shear Modulus, GPa 85 to 86
40

Thermal Properties

Latent Heat of Fusion, J/g 160
400
Melting Completion (Liquidus), °C 2680 to 2690
1580
Specific Heat Capacity, J/kg-K 160
550
Thermal Expansion, µm/m-K 11
9.9

Otherwise Unclassified Properties

Density, g/cm3 15
4.6
Embodied Carbon, kg CO2/kg material 43
40
Embodied Energy, MJ/kg 670
650

Common Calculations

Stiffness to Weight: Axial, points 8.5
13
Stiffness to Weight: Bending, points 14
34