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ASTM B541 Gold vs. AWS ERTi-1

ASTM B541 gold belongs to the otherwise unclassified metals classification, while AWS ERTi-1 belongs to the titanium alloys. There are 21 material properties with values for both materials. Properties with values for just one material (10, 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 B541 gold and the bottom bar is AWS ERTi-1.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 6.0 to 14
24
Poisson's Ratio 0.4
0.32
Shear Modulus, GPa 38
41
Tensile Strength: Ultimate (UTS), MPa 670 to 1180
240
Tensile Strength: Yield (Proof), MPa 480 to 900
170

Thermal Properties

Latent Heat of Fusion, J/g 90
420
Melting Completion (Liquidus), °C 1110
1670
Melting Onset (Solidus), °C 930
1620
Specific Heat Capacity, J/kg-K 170
540
Thermal Expansion, µm/m-K 13
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.7 to 12
3.6
Electrical Conductivity: Equal Weight (Specific), % IACS 4.0 to 6.2
7.1

Otherwise Unclassified Properties

Density, g/cm3 17
4.5

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 65 to 91
52
Resilience: Unit (Modulus of Resilience), kJ/m3 1090 to 3830
140
Stiffness to Weight: Axial, points 3.4
13
Stiffness to Weight: Bending, points 9.0
35
Strength to Weight: Axial, points 11 to 19
15
Strength to Weight: Bending, points 9.8 to 14
19
Thermal Shock Resistance, points 36 to 63
19

Alloy Composition

Carbon (C), % 0
0 to 0.030
Copper (Cu), % 13.5 to 15.5
0
Gold (Au), % 70.5 to 72.5
0
Hydrogen (H), % 0
0 to 0.0050
Iron (Fe), % 0
0 to 0.080
Nitrogen (N), % 0
0 to 0.012
Oxygen (O), % 0
0.030 to 0.1
Platinum (Pt), % 8.0 to 9.0
0
Silver (Ag), % 4.0 to 5.0
0
Titanium (Ti), % 0
99.773 to 99.97
Zinc (Zn), % 0.7 to 1.3
0
Residuals, % 0 to 0.4
0