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ASTM B596 Au-Cu vs. SAE-AISI M34 Steel

ASTM B596 Au-Cu belongs to the otherwise unclassified metals classification, while SAE-AISI M34 steel belongs to the iron alloys. There are 15 material properties with values for both materials. Properties with values for just one material (11, 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 B596 Au-Cu and the bottom bar is SAE-AISI M34 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
200
Poisson's Ratio 0.41
0.29
Shear Modulus, GPa 36
77
Tensile Strength: Ultimate (UTS), MPa 450 to 620
800 to 2170

Thermal Properties

Latent Heat of Fusion, J/g 77
270
Melting Completion (Liquidus), °C 1060
1540
Melting Onset (Solidus), °C 930
1500
Specific Heat Capacity, J/kg-K 150
450
Thermal Expansion, µm/m-K 14
12

Otherwise Unclassified Properties

Density, g/cm3 18
8.2

Common Calculations

Stiffness to Weight: Axial, points 3.1
14
Stiffness to Weight: Bending, points 8.5
24
Strength to Weight: Axial, points 6.8 to 9.4
27 to 74
Strength to Weight: Bending, points 7.1 to 8.8
23 to 46
Thermal Shock Resistance, points 22 to 30
25 to 67

Alloy Composition


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Carbon (C), % 0
0.85 to 0.92
Chromium (Cr), % 0
3.5 to 4.0
Cobalt (Co), % 0
7.8 to 8.8
Copper (Cu), % 9.0 to 11
0 to 0.25
Gold (Au), % 89 to 91
0
Iron (Fe), % 0
71.3 to 76.5
Manganese (Mn), % 0
0.15 to 0.4
Molybdenum (Mo), % 0
7.8 to 9.2
Nickel (Ni), % 0
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
0.2 to 0.45
Sulfur (S), % 0
0 to 0.030
Tungsten (W), % 0
1.4 to 2.1
Vanadium (V), % 0
1.9 to 2.3
Residuals, % 0 to 0.4
0

Comparable Variants