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AWS E320 vs. S31727 Stainless Steel

Both AWS E320 and S31727 stainless steel are iron alloys. They have 78% of their average alloy composition in common. There are 21 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is AWS E320 and the bottom bar is S31727 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 34
40
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
78
Tensile Strength: Ultimate (UTS), MPa 620
630

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Melting Completion (Liquidus), °C 1410
1440
Melting Onset (Solidus), °C 1360
1390
Specific Heat Capacity, J/kg-K 460
470
Thermal Expansion, µm/m-K 14
16

Otherwise Unclassified Properties

Base Metal Price, % relative 38
24
Density, g/cm3 8.2
8.0
Embodied Carbon, kg CO2/kg material 6.5
4.7
Embodied Energy, MJ/kg 91
64
Embodied Water, L/kg 220
180

Common Calculations

PREN (Pitting Resistance) 28
35
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 21
22
Strength to Weight: Bending, points 20
20
Thermal Shock Resistance, points 16
14

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.030
Chromium (Cr), % 19 to 21
17.5 to 19
Copper (Cu), % 3.0 to 4.0
2.8 to 4.0
Iron (Fe), % 31.8 to 43.5
53.7 to 61.3
Manganese (Mn), % 0.5 to 2.5
0 to 1.0
Molybdenum (Mo), % 2.0 to 3.0
3.8 to 4.5
Nickel (Ni), % 32 to 36
14.5 to 16.5
Niobium (Nb), % 0 to 1.0
0
Nitrogen (N), % 0
0.15 to 0.21
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 0.6
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030