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C69700 Brass vs. ASTM B596 Au-Cu

C69700 brass belongs to the copper alloys classification, while ASTM B596 Au-Cu belongs to the otherwise unclassified metals. There are 17 material properties with values for both materials. Properties with values for just one material (12, 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 B596 Au-Cu.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
100
Elongation at Break, % 25
4.3 to 17
Poisson's Ratio 0.32
0.41
Shear Modulus, GPa 41
36
Shear Strength, MPa 300
280 to 360
Tensile Strength: Ultimate (UTS), MPa 470
450 to 620

Thermal Properties

Latent Heat of Fusion, J/g 240
77
Melting Completion (Liquidus), °C 930
1060
Melting Onset (Solidus), °C 880
930
Specific Heat Capacity, J/kg-K 400
150
Thermal Expansion, µm/m-K 19
14

Otherwise Unclassified Properties

Density, g/cm3 8.3
18

Common Calculations

Stiffness to Weight: Axial, points 7.3
3.1
Stiffness to Weight: Bending, points 19
8.5
Strength to Weight: Axial, points 16
6.8 to 9.4
Strength to Weight: Bending, points 16
7.1 to 8.8
Thermal Shock Resistance, points 16
22 to 30

Alloy Composition

Copper (Cu), % 75 to 80
9.0 to 11
Gold (Au), % 0
89 to 91
Iron (Fe), % 0 to 0.2
0
Lead (Pb), % 0.5 to 1.5
0
Manganese (Mn), % 0 to 0.4
0
Silicon (Si), % 2.5 to 3.5
0
Zinc (Zn), % 13.9 to 22
0
Residuals, % 0
0 to 0.4