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AWS ER90S-D2 vs. S31266 Stainless Steel

Both AWS ER90S-D2 and S31266 stainless steel are iron alloys. They have 43% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is AWS ER90S-D2 and the bottom bar is S31266 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 19
40
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
81
Tensile Strength: Ultimate (UTS), MPa 710
860
Tensile Strength: Yield (Proof), MPa 600
470

Thermal Properties

Latent Heat of Fusion, J/g 260
310
Melting Completion (Liquidus), °C 1450
1470
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 470
460
Thermal Conductivity, W/m-K 47
12
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 2.6
37
Density, g/cm3 7.8
8.2
Embodied Carbon, kg CO2/kg material 1.6
6.5
Embodied Energy, MJ/kg 21
89
Embodied Water, L/kg 50
220

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
290
Resilience: Unit (Modulus of Resilience), kJ/m3 980
540
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 25
29
Strength to Weight: Bending, points 23
24
Thermal Diffusivity, mm2/s 13
3.1
Thermal Shock Resistance, points 21
18

Alloy Composition

Carbon (C), % 0.070 to 0.12
0 to 0.030
Chromium (Cr), % 0
23 to 25
Copper (Cu), % 0 to 0.5
1.0 to 2.5
Iron (Fe), % 95.2 to 97.4
34.1 to 46
Manganese (Mn), % 1.6 to 2.1
2.0 to 4.0
Molybdenum (Mo), % 0.4 to 0.6
5.2 to 6.2
Nickel (Ni), % 0 to 0.15
21 to 24
Nitrogen (N), % 0
0.35 to 0.6
Phosphorus (P), % 0 to 0.025
0 to 0.035
Silicon (Si), % 0.5 to 0.8
0 to 1.0
Sulfur (S), % 0 to 0.025
0 to 0.020
Tungsten (W), % 0
1.5 to 2.5
Residuals, % 0 to 0.5
0