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AWS BVAg-18 vs. S31727 Stainless Steel

AWS BVAg-18 belongs to the otherwise unclassified metals classification, while S31727 stainless steel belongs to the iron alloys. There are 17 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.

For each property being compared, the top bar is AWS BVAg-18 and the bottom bar is S31727 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 82
200
Poisson's Ratio 0.36
0.28
Shear Modulus, GPa 30
78
Tensile Strength: Ultimate (UTS), MPa 180
630

Thermal Properties

Latent Heat of Fusion, J/g 140
290
Melting Completion (Liquidus), °C 720
1440
Melting Onset (Solidus), °C 600
1390
Specific Heat Capacity, J/kg-K 280
470
Thermal Expansion, µm/m-K 19
16

Otherwise Unclassified Properties

Density, g/cm3 9.7
8.0
Embodied Carbon, kg CO2/kg material 59
4.7
Embodied Energy, MJ/kg 930
64

Common Calculations

Stiffness to Weight: Axial, points 4.7
14
Stiffness to Weight: Bending, points 15
24
Strength to Weight: Axial, points 5.1
22
Strength to Weight: Bending, points 7.3
20
Thermal Shock Resistance, points 8.1
14

Alloy Composition

Cadmium (Cd), % 0 to 0.0010
0
Carbon (C), % 0 to 0.0050
0 to 0.030
Chromium (Cr), % 0
17.5 to 19
Copper (Cu), % 28.5 to 31.5
2.8 to 4.0
Iron (Fe), % 0
53.7 to 61.3
Lead (Pb), % 0 to 0.0020
0
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
3.8 to 4.5
Nickel (Ni), % 0
14.5 to 16.5
Nitrogen (N), % 0
0.15 to 0.21
Phosphorus (P), % 0 to 0.0020
0 to 0.030
Silicon (Si), % 0
0 to 1.0
Silver (Ag), % 59 to 61
0
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 9.5 to 10.5
0
Zinc (Zn), % 0 to 0.0010
0