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ASTM B596 Au-Cu vs. Grade 200 Maraging Steel

ASTM B596 Au-Cu belongs to the otherwise unclassified metals classification, while grade 200 maraging steel belongs to the iron alloys. 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 ASTM B596 Au-Cu and the bottom bar is grade 200 maraging steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
190
Elongation at Break, % 4.3 to 17
9.1 to 18
Poisson's Ratio 0.41
0.3
Shear Modulus, GPa 36
74
Shear Strength, MPa 280 to 360
600 to 890
Tensile Strength: Ultimate (UTS), MPa 450 to 620
970 to 1500

Thermal Properties

Latent Heat of Fusion, J/g 77
260
Melting Completion (Liquidus), °C 1060
1460
Melting Onset (Solidus), °C 930
1420
Specific Heat Capacity, J/kg-K 150
460
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
13
Stiffness to Weight: Bending, points 8.5
23
Strength to Weight: Axial, points 6.8 to 9.4
33 to 51
Strength to Weight: Bending, points 7.1 to 8.8
27 to 35
Thermal Shock Resistance, points 22 to 30
29 to 45

Alloy Composition

Aluminum (Al), % 0
0.050 to 0.15
Boron (B), % 0
0 to 0.0030
Calcium (Ca), % 0
0 to 0.050
Carbon (C), % 0
0 to 0.030
Cobalt (Co), % 0
8.0 to 9.0
Copper (Cu), % 9.0 to 11
0
Gold (Au), % 89 to 91
0
Iron (Fe), % 0
67.8 to 71.8
Manganese (Mn), % 0
0 to 0.1
Molybdenum (Mo), % 0
3.0 to 3.5
Nickel (Ni), % 0
17 to 19
Phosphorus (P), % 0
0 to 0.010
Silicon (Si), % 0
0 to 0.1
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 0
0.15 to 0.25
Zirconium (Zr), % 0
0 to 0.020
Residuals, % 0 to 0.4
0

Comparable Variants