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EN 1.4938 Stainless Steel vs. AWS ERNiCrMo-10

EN 1.4938 stainless steel belongs to the iron alloys classification, while AWS ERNiCrMo-10 belongs to the nickel alloys. They have a modest 20% of their average alloy composition in common, which, by itself, doesn't mean much. There are 24 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 EN 1.4938 stainless steel and the bottom bar is AWS ERNiCrMo-10.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
220
Elongation at Break, % 16 to 17
28
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
84
Tensile Strength: Ultimate (UTS), MPa 870 to 1030
790

Thermal Properties

Latent Heat of Fusion, J/g 270
320
Melting Completion (Liquidus), °C 1460
1550
Melting Onset (Solidus), °C 1420
1490
Specific Heat Capacity, J/kg-K 470
420
Thermal Conductivity, W/m-K 30
10
Thermal Expansion, µm/m-K 11
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
1.5
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
1.5

Otherwise Unclassified Properties

Base Metal Price, % relative 10
70
Density, g/cm3 7.8
8.9
Embodied Carbon, kg CO2/kg material 3.3
12
Embodied Energy, MJ/kg 47
160
Embodied Water, L/kg 110
300

Common Calculations

Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 31 to 37
25
Strength to Weight: Bending, points 26 to 29
21
Thermal Diffusivity, mm2/s 8.1
2.7
Thermal Shock Resistance, points 30 to 35
21

Alloy Composition

Carbon (C), % 0.080 to 0.15
0 to 0.015
Chromium (Cr), % 11 to 12.5
20 to 22.5
Cobalt (Co), % 0
0 to 2.5
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 80.5 to 84.8
2.0 to 6.0
Manganese (Mn), % 0.4 to 0.9
0 to 0.5
Molybdenum (Mo), % 1.5 to 2.0
12.5 to 14.5
Nickel (Ni), % 2.0 to 3.0
49 to 63
Nitrogen (N), % 0.020 to 0.040
0
Phosphorus (P), % 0 to 0.025
0 to 0.020
Silicon (Si), % 0 to 0.5
0 to 0.080
Sulfur (S), % 0 to 0.015
0 to 0.010
Tungsten (W), % 0
2.5 to 3.5
Vanadium (V), % 0.25 to 0.4
0 to 0.35
Residuals, % 0
0 to 0.5