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AWS E320 vs. S31277 Stainless Steel

Both AWS E320 and S31277 stainless steel are iron alloys. They have 90% of their average alloy composition in common. There are 21 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is AWS E320 and the bottom bar is S31277 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 34
45
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
80
Tensile Strength: Ultimate (UTS), MPa 620
860

Thermal Properties

Latent Heat of Fusion, J/g 300
310
Melting Completion (Liquidus), °C 1410
1460
Melting Onset (Solidus), °C 1360
1410
Specific Heat Capacity, J/kg-K 460
460
Thermal Expansion, µm/m-K 14
16

Otherwise Unclassified Properties

Base Metal Price, % relative 38
36
Density, g/cm3 8.2
8.1
Embodied Carbon, kg CO2/kg material 6.5
6.7
Embodied Energy, MJ/kg 91
90
Embodied Water, L/kg 220
220

Common Calculations

PREN (Pitting Resistance) 28
51
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 21
29
Strength to Weight: Bending, points 20
25
Thermal Shock Resistance, points 16
19

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.020
Chromium (Cr), % 19 to 21
20.5 to 23
Copper (Cu), % 3.0 to 4.0
0.5 to 1.5
Iron (Fe), % 31.8 to 43.5
35.5 to 46.2
Manganese (Mn), % 0.5 to 2.5
0 to 3.0
Molybdenum (Mo), % 2.0 to 3.0
6.5 to 8.0
Nickel (Ni), % 32 to 36
26 to 28
Niobium (Nb), % 0 to 1.0
0
Nitrogen (N), % 0
0.3 to 0.4
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 0.6
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.010