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AWS BVAu-7 vs. S21800 Stainless Steel

AWS BVAu-7 belongs to the otherwise unclassified metals classification, while S21800 stainless steel belongs to the iron alloys. There are 15 material properties with values for both materials. Properties with values for just one material (17, in this case) are not shown.

For each property being compared, the top bar is AWS BVAu-7 and the bottom bar is S21800 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 130
190
Poisson's Ratio 0.38
0.28
Shear Modulus, GPa 45
75
Tensile Strength: Ultimate (UTS), MPa 200
740

Thermal Properties

Latent Heat of Fusion, J/g 140
340
Melting Completion (Liquidus), °C 1120
1360
Melting Onset (Solidus), °C 1100
1310
Specific Heat Capacity, J/kg-K 240
500
Thermal Expansion, µm/m-K 13
16

Otherwise Unclassified Properties

Density, g/cm3 15
7.5

Common Calculations

Stiffness to Weight: Axial, points 4.7
14
Stiffness to Weight: Bending, points 11
26
Strength to Weight: Axial, points 3.7
27
Strength to Weight: Bending, points 5.1
24
Thermal Shock Resistance, points 8.9
17

Alloy Composition

Cadmium (Cd), % 0 to 0.0010
0
Carbon (C), % 0 to 0.0050
0 to 0.1
Chromium (Cr), % 0
16 to 18
Cobalt (Co), % 0 to 0.060
0
Gold (Au), % 49.5 to 50.5
0
Iron (Fe), % 0
59.1 to 65.4
Lead (Pb), % 0 to 0.0020
0
Manganese (Mn), % 0
7.0 to 9.0
Nickel (Ni), % 24.5 to 25.5
8.0 to 9.0
Nitrogen (N), % 0
0.080 to 0.18
Palladium (Pd), % 23.9 to 26
0
Phosphorus (P), % 0 to 0.0020
0 to 0.060
Silicon (Si), % 0
3.5 to 4.5
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 0 to 0.0010
0