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AWS ER90S-D2 vs. EN 1.6957 Steel

Both AWS ER90S-D2 and EN 1.6957 steel are iron alloys. They have a moderately high 95% of their average alloy composition in common. There are 27 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 ER90S-D2 and the bottom bar is EN 1.6957 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 19
18
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Tensile Strength: Ultimate (UTS), MPa 710
930
Tensile Strength: Yield (Proof), MPa 600
780

Thermal Properties

Latent Heat of Fusion, J/g 260
250
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 47
47
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
7.9
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5
9.1

Otherwise Unclassified Properties

Base Metal Price, % relative 2.6
5.0
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.6
2.1
Embodied Energy, MJ/kg 21
29
Embodied Water, L/kg 50
60

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
160
Resilience: Unit (Modulus of Resilience), kJ/m3 980
1630
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 25
33
Strength to Weight: Bending, points 23
27
Thermal Diffusivity, mm2/s 13
13
Thermal Shock Resistance, points 21
27

Alloy Composition

Carbon (C), % 0.070 to 0.12
0.22 to 0.32
Chromium (Cr), % 0
1.2 to 1.8
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 95.2 to 97.4
92.7 to 94.7
Manganese (Mn), % 1.6 to 2.1
0.15 to 0.4
Molybdenum (Mo), % 0.4 to 0.6
0.25 to 0.45
Nickel (Ni), % 0 to 0.15
3.4 to 4.0
Phosphorus (P), % 0 to 0.025
0 to 0.010
Silicon (Si), % 0.5 to 0.8
0 to 0.15
Sulfur (S), % 0 to 0.025
0 to 0.0070
Vanadium (V), % 0
0.050 to 0.15
Residuals, % 0 to 0.5
0