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ASTM B477 Au-Ni-Ag vs. R05255 Alloy

Both ASTM B477 Au-Ni-Ag and R05255 alloy are otherwise unclassified metals. There are 14 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is ASTM B477 Au-Ni-Ag and the bottom bar is R05255 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 95
190
Elongation at Break, % 5.5 to 11
20
Poisson's Ratio 0.41
0.34
Shear Modulus, GPa 34
70
Tensile Strength: Ultimate (UTS), MPa 310 to 550
540

Thermal Properties

Latent Heat of Fusion, J/g 80
140
Specific Heat Capacity, J/kg-K 160
140
Thermal Expansion, µm/m-K 15
6.6

Otherwise Unclassified Properties

Density, g/cm3 17
17

Common Calculations

Stiffness to Weight: Axial, points 3.1
6.3
Stiffness to Weight: Bending, points 8.9
11
Strength to Weight: Axial, points 5.0 to 9.0
9.1
Strength to Weight: Bending, points 6.0 to 8.8
8.9
Thermal Shock Resistance, points 16 to 28
31

Alloy Composition

Carbon (C), % 0
0 to 0.010
Gold (Au), % 74.2 to 75.8
0
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 0
0 to 0.010
Molybdenum (Mo), % 0
0 to 0.020
Nickel (Ni), % 2.6 to 3.4
0 to 0.010
Niobium (Nb), % 0
0 to 0.5
Nitrogen (N), % 0
0 to 0.010
Oxygen (O), % 0
0 to 0.015
Silicon (Si), % 0
0 to 0.0050
Silver (Ag), % 21.4 to 22.6
0
Tantalum (Ta), % 0
95.9 to 98
Titanium (Ti), % 0
0 to 0.010
Tungsten (W), % 0
2.0 to 3.5
Residuals, % 0 to 0.3
0