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S31730 Stainless Steel vs. AWS BAg-4

S31730 stainless steel belongs to the iron alloys classification, while AWS BAg-4 belongs to the otherwise unclassified metals. There are 17 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is S31730 stainless steel and the bottom bar is AWS BAg-4.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
91
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
34
Tensile Strength: Ultimate (UTS), MPa 540
150

Thermal Properties

Latent Heat of Fusion, J/g 290
140
Melting Completion (Liquidus), °C 1430
780
Melting Onset (Solidus), °C 1390
670
Specific Heat Capacity, J/kg-K 470
330
Thermal Expansion, µm/m-K 16
21

Otherwise Unclassified Properties

Density, g/cm3 8.0
8.9
Embodied Carbon, kg CO2/kg material 4.6
40
Embodied Energy, MJ/kg 63
630

Common Calculations

Stiffness to Weight: Axial, points 14
5.7
Stiffness to Weight: Bending, points 24
17
Strength to Weight: Axial, points 19
4.7
Strength to Weight: Bending, points 18
7.1
Thermal Shock Resistance, points 12
5.7

Alloy Composition

Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 17 to 19
0
Copper (Cu), % 4.0 to 5.0
29 to 31
Iron (Fe), % 52.4 to 61
0
Manganese (Mn), % 0 to 2.0
0
Molybdenum (Mo), % 3.0 to 4.0
0
Nickel (Ni), % 15 to 16.5
1.5 to 2.5
Nitrogen (N), % 0 to 0.045
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0
Silver (Ag), % 0
39 to 41
Sulfur (S), % 0 to 0.010
0
Zinc (Zn), % 0
26 to 30
Residuals, % 0
0 to 0.15