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ASTM B541 Gold vs. C22000 Bronze

ASTM B541 gold belongs to the otherwise unclassified metals classification, while C22000 bronze belongs to the copper alloys. There are 22 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is ASTM B541 gold and the bottom bar is C22000 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 6.0 to 14
1.9 to 45
Poisson's Ratio 0.4
0.33
Shear Modulus, GPa 38
42
Shear Strength, MPa 410 to 690
200 to 300
Tensile Strength: Ultimate (UTS), MPa 670 to 1180
260 to 520
Tensile Strength: Yield (Proof), MPa 480 to 900
69 to 500

Thermal Properties

Latent Heat of Fusion, J/g 90
200
Melting Completion (Liquidus), °C 1110
1040
Melting Onset (Solidus), °C 930
1020
Specific Heat Capacity, J/kg-K 170
390
Thermal Expansion, µm/m-K 13
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.7 to 12
44
Electrical Conductivity: Equal Weight (Specific), % IACS 4.0 to 6.2
45

Otherwise Unclassified Properties

Density, g/cm3 17
8.7

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 65 to 91
3.7 to 230
Resilience: Unit (Modulus of Resilience), kJ/m3 1090 to 3830
21 to 1110
Stiffness to Weight: Axial, points 3.4
7.2
Stiffness to Weight: Bending, points 9.0
18
Strength to Weight: Axial, points 11 to 19
8.1 to 17
Strength to Weight: Bending, points 9.8 to 14
10 to 17
Thermal Shock Resistance, points 36 to 63
8.8 to 18

Alloy Composition

Copper (Cu), % 13.5 to 15.5
89 to 91
Gold (Au), % 70.5 to 72.5
0
Iron (Fe), % 0
0 to 0.050
Lead (Pb), % 0
0 to 0.050
Platinum (Pt), % 8.0 to 9.0
0
Silver (Ag), % 4.0 to 5.0
0
Zinc (Zn), % 0.7 to 1.3
8.7 to 11
Residuals, % 0
0 to 0.2