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C69700 Brass vs. ASTM B541 Gold

C69700 brass belongs to the copper alloys classification, while ASTM B541 gold belongs to the otherwise unclassified metals. There are 20 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 C69700 brass 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, % 25
6.0 to 14
Poisson's Ratio 0.32
0.4
Shear Modulus, GPa 41
38
Shear Strength, MPa 300
410 to 690
Tensile Strength: Ultimate (UTS), MPa 470
670 to 1180
Tensile Strength: Yield (Proof), MPa 230
480 to 900

Thermal Properties

Latent Heat of Fusion, J/g 240
90
Melting Completion (Liquidus), °C 930
1110
Melting Onset (Solidus), °C 880
930
Specific Heat Capacity, J/kg-K 400
170
Thermal Expansion, µm/m-K 19
13

Otherwise Unclassified Properties

Density, g/cm3 8.3
17

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 99
65 to 91
Resilience: Unit (Modulus of Resilience), kJ/m3 250
1090 to 3830
Stiffness to Weight: Axial, points 7.3
3.4
Stiffness to Weight: Bending, points 19
9.0
Strength to Weight: Axial, points 16
11 to 19
Strength to Weight: Bending, points 16
9.8 to 14
Thermal Shock Resistance, points 16
36 to 63

Alloy Composition

Copper (Cu), % 75 to 80
13.5 to 15.5
Gold (Au), % 0
70.5 to 72.5
Iron (Fe), % 0 to 0.2
0
Lead (Pb), % 0.5 to 1.5
0
Manganese (Mn), % 0 to 0.4
0
Platinum (Pt), % 0
8.0 to 9.0
Silicon (Si), % 2.5 to 3.5
0
Silver (Ag), % 0
4.0 to 5.0
Zinc (Zn), % 13.9 to 22
0.7 to 1.3
Residuals, % 0
0 to 0.4