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AWS ENiCrMo-3 vs. EN 1.4938 Stainless Steel

AWS ENiCrMo-3 belongs to the nickel alloys classification, while EN 1.4938 stainless steel belongs to the iron 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 AWS ENiCrMo-3 and the bottom bar is EN 1.4938 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 34
16 to 17
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 79
76
Tensile Strength: Ultimate (UTS), MPa 870
870 to 1030

Thermal Properties

Latent Heat of Fusion, J/g 330
270
Melting Completion (Liquidus), °C 1480
1460
Melting Onset (Solidus), °C 1430
1420
Specific Heat Capacity, J/kg-K 440
470
Thermal Conductivity, W/m-K 11
30
Thermal Expansion, µm/m-K 12
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.3
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 1.4
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 80
10
Density, g/cm3 8.6
7.8
Embodied Carbon, kg CO2/kg material 14
3.3
Embodied Energy, MJ/kg 190
47
Embodied Water, L/kg 290
110

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 28
31 to 37
Strength to Weight: Bending, points 24
26 to 29
Thermal Diffusivity, mm2/s 2.8
8.1
Thermal Shock Resistance, points 25
30 to 35

Alloy Composition

Carbon (C), % 0 to 0.1
0.080 to 0.15
Chromium (Cr), % 20 to 23
11 to 12.5
Cobalt (Co), % 0 to 0.12
0
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 0 to 7.0
80.5 to 84.8
Manganese (Mn), % 0 to 1.0
0.4 to 0.9
Molybdenum (Mo), % 8.0 to 10
1.5 to 2.0
Nickel (Ni), % 55 to 68.9
2.0 to 3.0
Niobium (Nb), % 3.2 to 4.2
0
Nitrogen (N), % 0
0.020 to 0.040
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0 to 0.75
0 to 0.5
Sulfur (S), % 0 to 0.020
0 to 0.015
Vanadium (V), % 0
0.25 to 0.4
Residuals, % 0 to 0.5
0