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C61800 Bronze vs. ASTM B541 Gold

C61800 bronze belongs to the copper alloys classification, while ASTM B541 gold belongs to the otherwise unclassified metals. There are 22 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 C61800 bronze and the bottom bar is ASTM B541 gold.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 26
6.0 to 14
Poisson's Ratio 0.34
0.4
Shear Modulus, GPa 44
38
Shear Strength, MPa 310
410 to 690
Tensile Strength: Ultimate (UTS), MPa 740
670 to 1180
Tensile Strength: Yield (Proof), MPa 310
480 to 900

Thermal Properties

Latent Heat of Fusion, J/g 230
90
Melting Completion (Liquidus), °C 1050
1110
Melting Onset (Solidus), °C 1040
930
Specific Heat Capacity, J/kg-K 440
170
Thermal Expansion, µm/m-K 18
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 13
7.7 to 12
Electrical Conductivity: Equal Weight (Specific), % IACS 14
4.0 to 6.2

Otherwise Unclassified Properties

Density, g/cm3 8.3
17

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 150
65 to 91
Resilience: Unit (Modulus of Resilience), kJ/m3 420
1090 to 3830
Stiffness to Weight: Axial, points 7.5
3.4
Stiffness to Weight: Bending, points 19
9.0
Strength to Weight: Axial, points 25
11 to 19
Strength to Weight: Bending, points 22
9.8 to 14
Thermal Shock Resistance, points 26
36 to 63

Alloy Composition

Aluminum (Al), % 8.5 to 11
0
Copper (Cu), % 86.9 to 91
13.5 to 15.5
Gold (Au), % 0
70.5 to 72.5
Iron (Fe), % 0.5 to 1.5
0
Lead (Pb), % 0 to 0.020
0
Platinum (Pt), % 0
8.0 to 9.0
Silicon (Si), % 0 to 0.1
0
Silver (Ag), % 0
4.0 to 5.0
Zinc (Zn), % 0 to 0.020
0.7 to 1.3
Residuals, % 0
0 to 0.4