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AWS ENiCrFe-2 vs. S21904 Stainless Steel

AWS ENiCrFe-2 belongs to the nickel alloys classification, while S21904 stainless steel belongs to the iron alloys. They have a modest 30% 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 (13, in this case) are not shown.

For each property being compared, the top bar is AWS ENiCrFe-2 and the bottom bar is S21904 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 28
17 to 51
Poisson's Ratio 0.3
0.28
Shear Modulus, GPa 74
78
Tensile Strength: Ultimate (UTS), MPa 790
700 to 1000

Thermal Properties

Latent Heat of Fusion, J/g 310
290
Melting Completion (Liquidus), °C 1390
1400
Melting Onset (Solidus), °C 1350
1350
Specific Heat Capacity, J/kg-K 450
480
Thermal Expansion, µm/m-K 12
17

Otherwise Unclassified Properties

Base Metal Price, % relative 65
15
Density, g/cm3 8.5
7.7
Embodied Carbon, kg CO2/kg material 11
3.0
Embodied Energy, MJ/kg 160
43
Embodied Water, L/kg 260
160

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 26
25 to 36
Strength to Weight: Bending, points 22
23 to 29
Thermal Shock Resistance, points 24
15 to 21

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.040
Chromium (Cr), % 13 to 17
19 to 21.5
Cobalt (Co), % 0 to 0.12
0
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 0 to 12
59.5 to 67.4
Manganese (Mn), % 1.0 to 3.5
8.0 to 10
Molybdenum (Mo), % 0.5 to 2.5
0
Nickel (Ni), % 62 to 85
5.5 to 7.5
Niobium (Nb), % 0.5 to 4.0
0
Nitrogen (N), % 0
0.15 to 0.4
Phosphorus (P), % 0 to 0.030
0 to 0.045
Silicon (Si), % 0 to 0.75
0 to 1.0
Sulfur (S), % 0 to 0.020
0 to 0.030
Residuals, % 0 to 0.5
0