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S21904 Stainless Steel vs. AWS BVAg-8b

S21904 stainless steel belongs to the iron alloys classification, while AWS BVAg-8b belongs to the otherwise unclassified metals. There are 15 material properties with values for both materials. Properties with values for just one material (19, in this case) are not shown.

For each property being compared, the top bar is S21904 stainless steel and the bottom bar is AWS BVAg-8b.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
84
Poisson's Ratio 0.28
0.36
Shear Modulus, GPa 78
31
Tensile Strength: Ultimate (UTS), MPa 700 to 1000
170

Thermal Properties

Latent Heat of Fusion, J/g 290
140
Melting Completion (Liquidus), °C 1400
800
Melting Onset (Solidus), °C 1350
780
Specific Heat Capacity, J/kg-K 480
280
Thermal Expansion, µm/m-K 17
19

Otherwise Unclassified Properties

Density, g/cm3 7.7
10

Common Calculations

Stiffness to Weight: Axial, points 14
4.7
Stiffness to Weight: Bending, points 25
15
Strength to Weight: Axial, points 25 to 36
4.7
Strength to Weight: Bending, points 23 to 29
6.8
Thermal Shock Resistance, points 15 to 21
7.6

Alloy Composition

Cadmium (Cd), % 0
0 to 0.0010
Carbon (C), % 0 to 0.040
0 to 0.0050
Chromium (Cr), % 19 to 21.5
0
Copper (Cu), % 0
26.8 to 29.2
Iron (Fe), % 59.5 to 67.4
0
Lead (Pb), % 0
0 to 0.0020
Manganese (Mn), % 8.0 to 10
0
Nickel (Ni), % 5.5 to 7.5
0.3 to 0.7
Nitrogen (N), % 0.15 to 0.4
0
Phosphorus (P), % 0 to 0.045
0 to 0.0020
Silicon (Si), % 0 to 1.0
0
Silver (Ag), % 0
70.5 to 72.5
Sulfur (S), % 0 to 0.030
0
Zinc (Zn), % 0
0 to 0.0010