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AWS ENiCrMo-4 vs. EN 1.4938 Stainless Steel

AWS ENiCrMo-4 belongs to the nickel alloys classification, while EN 1.4938 stainless steel belongs to the iron alloys. They have a modest 22% of their average alloy composition in common, which, by itself, doesn't mean much. There are 20 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is AWS ENiCrMo-4 and the bottom bar is EN 1.4938 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

Latent Heat of Fusion, J/g 320
270
Melting Completion (Liquidus), °C 1590
1460
Melting Onset (Solidus), °C 1530
1420
Specific Heat Capacity, J/kg-K 410
470
Thermal Expansion, µm/m-K 12
11

Otherwise Unclassified Properties

Base Metal Price, % relative 70
10
Density, g/cm3 9.0
7.8
Embodied Carbon, kg CO2/kg material 13
3.3
Embodied Energy, MJ/kg 170
47
Embodied Water, L/kg 280
110

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 22
25
Strength to Weight: Axial, points 24
31 to 37
Strength to Weight: Bending, points 21
26 to 29
Thermal Shock Resistance, points 22
30 to 35

Alloy Composition

Carbon (C), % 0 to 0.020
0.080 to 0.15
Chromium (Cr), % 14.5 to 16.5
11 to 12.5
Cobalt (Co), % 0 to 2.5
0
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 4.0 to 7.0
80.5 to 84.8
Manganese (Mn), % 0 to 1.0
0.4 to 0.9
Molybdenum (Mo), % 15 to 17
1.5 to 2.0
Nickel (Ni), % 49.9 to 63.5
2.0 to 3.0
Nitrogen (N), % 0
0.020 to 0.040
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 0.2
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.015
Tungsten (W), % 3.0 to 4.5
0
Vanadium (V), % 0 to 0.35
0.25 to 0.4
Residuals, % 0 to 0.5
0