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S31277 Stainless Steel vs. AWS E318

Both S31277 stainless steel and AWS E318 are iron alloys. They have 77% of their average alloy composition in common. There are 21 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is S31277 stainless steel and the bottom bar is AWS E318.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 45
29
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 80
78
Tensile Strength: Ultimate (UTS), MPa 860
620

Thermal Properties

Latent Heat of Fusion, J/g 310
290
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1410
1400
Specific Heat Capacity, J/kg-K 460
470
Thermal Expansion, µm/m-K 16
14

Otherwise Unclassified Properties

Base Metal Price, % relative 36
23
Density, g/cm3 8.1
7.9
Embodied Carbon, kg CO2/kg material 6.7
4.4
Embodied Energy, MJ/kg 90
62
Embodied Water, L/kg 220
160

Common Calculations

PREN (Pitting Resistance) 51
27
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 29
22
Strength to Weight: Bending, points 25
20
Thermal Shock Resistance, points 19
16

Alloy Composition

Carbon (C), % 0 to 0.020
0 to 0.080
Chromium (Cr), % 20.5 to 23
17 to 20
Copper (Cu), % 0.5 to 1.5
0 to 0.75
Iron (Fe), % 35.5 to 46.2
57.6 to 69.5
Manganese (Mn), % 0 to 3.0
0.5 to 2.5
Molybdenum (Mo), % 6.5 to 8.0
2.0 to 3.0
Nickel (Ni), % 26 to 28
11 to 14
Niobium (Nb), % 0
0 to 1.0
Nitrogen (N), % 0.3 to 0.4
0
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.030