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AWS ERNiCrMo-2 vs. EN 1.7390 Steel

AWS ERNiCrMo-2 belongs to the nickel alloys classification, while EN 1.7390 steel belongs to the iron alloys. They have a modest 25% of their average alloy composition in common, which, by itself, doesn't mean much. There are 23 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 AWS ERNiCrMo-2 and the bottom bar is EN 1.7390 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 81
74
Tensile Strength: Ultimate (UTS), MPa 750
710

Thermal Properties

Latent Heat of Fusion, J/g 320
260
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 11
40
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.5
8.1
Electrical Conductivity: Equal Weight (Specific), % IACS 1.6
9.3

Otherwise Unclassified Properties

Base Metal Price, % relative 55
4.3
Density, g/cm3 8.4
7.8
Embodied Carbon, kg CO2/kg material 9.2
1.7
Embodied Energy, MJ/kg 120
23
Embodied Water, L/kg 270
69

Common Calculations

Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 25
25
Strength to Weight: Bending, points 22
23
Thermal Diffusivity, mm2/s 2.9
11
Thermal Shock Resistance, points 20
20

Alloy Composition

Carbon (C), % 0.050 to 0.15
0 to 0.18
Chromium (Cr), % 20.5 to 23
4.0 to 6.0
Cobalt (Co), % 0.5 to 2.5
0
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 17 to 20
91.9 to 95.3
Manganese (Mn), % 0 to 1.0
0.3 to 0.8
Molybdenum (Mo), % 8.0 to 10
0.45 to 0.65
Nickel (Ni), % 40.3 to 53.8
0
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.015
Tungsten (W), % 0.2 to 1.0
0
Residuals, % 0 to 0.5
0