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AWS ER90S-D2 vs. EN 1.4971 Stainless Steel

Both AWS ER90S-D2 and EN 1.4971 stainless steel are iron alloys. They have a modest 33% of their average alloy composition in common, which, by itself, doesn't mean much. There are 25 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is AWS ER90S-D2 and the bottom bar is EN 1.4971 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 19
34
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
81
Tensile Strength: Ultimate (UTS), MPa 710
800
Tensile Strength: Yield (Proof), MPa 600
340

Thermal Properties

Latent Heat of Fusion, J/g 260
300
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1410
1410
Specific Heat Capacity, J/kg-K 470
450
Thermal Conductivity, W/m-K 47
13
Thermal Expansion, µm/m-K 13
15

Otherwise Unclassified Properties

Base Metal Price, % relative 2.6
70
Density, g/cm3 7.8
8.4
Embodied Carbon, kg CO2/kg material 1.6
7.6
Embodied Energy, MJ/kg 21
110
Embodied Water, L/kg 50
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
220
Resilience: Unit (Modulus of Resilience), kJ/m3 980
280
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 25
26
Strength to Weight: Bending, points 23
23
Thermal Diffusivity, mm2/s 13
3.4
Thermal Shock Resistance, points 21
19

Alloy Composition

Carbon (C), % 0.070 to 0.12
0.080 to 0.16
Chromium (Cr), % 0
20 to 22.5
Cobalt (Co), % 0
18.5 to 21
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 95.2 to 97.4
24.3 to 37.1
Manganese (Mn), % 1.6 to 2.1
0 to 2.0
Molybdenum (Mo), % 0.4 to 0.6
2.5 to 3.5
Nickel (Ni), % 0 to 0.15
19 to 21
Niobium (Nb), % 0
0.75 to 1.3
Nitrogen (N), % 0
0.1 to 0.2
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 0.015
Tungsten (W), % 0
2.0 to 3.0
Residuals, % 0 to 0.5
0