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AWS BAu-1 vs. ASTM B541 Gold

Both AWS BAu-1 and ASTM B541 gold are otherwise unclassified metals. They have 52% of their average alloy composition in common. There are 15 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is AWS BAu-1 and the bottom bar is ASTM B541 gold.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Poisson's Ratio 0.37
0.4
Shear Modulus, GPa 40
38
Tensile Strength: Ultimate (UTS), MPa 210
670 to 1180

Thermal Properties

Latent Heat of Fusion, J/g 150
90
Melting Completion (Liquidus), °C 1020
1110
Melting Onset (Solidus), °C 990
930
Specific Heat Capacity, J/kg-K 290
170
Thermal Expansion, µm/m-K 16
13

Otherwise Unclassified Properties

Density, g/cm3 13
17

Common Calculations

Stiffness to Weight: Axial, points 4.7
3.4
Stiffness to Weight: Bending, points 12
9.0
Strength to Weight: Axial, points 4.5
11 to 19
Strength to Weight: Bending, points 6.1
9.8 to 14
Thermal Shock Resistance, points 8.5
36 to 63

Alloy Composition

Copper (Cu), % 61.9 to 63
13.5 to 15.5
Gold (Au), % 37 to 38
70.5 to 72.5
Platinum (Pt), % 0
8.0 to 9.0
Silver (Ag), % 0
4.0 to 5.0
Zinc (Zn), % 0
0.7 to 1.3
Residuals, % 0 to 0.15
0 to 0.4