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AWS ERNiFeCr-2 vs. S21640 Stainless Steel

AWS ERNiFeCr-2 belongs to the nickel alloys classification, while S21640 stainless steel belongs to the iron alloys. They have 44% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is AWS ERNiFeCr-2 and the bottom bar is S21640 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 28
46
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 75
78
Tensile Strength: Ultimate (UTS), MPa 1300
740

Thermal Properties

Latent Heat of Fusion, J/g 310
290
Melting Completion (Liquidus), °C 1460
1430
Melting Onset (Solidus), °C 1410
1380
Specific Heat Capacity, J/kg-K 450
480
Thermal Conductivity, W/m-K 12
15
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.4
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 1.5
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 75
17
Density, g/cm3 8.3
7.7
Embodied Carbon, kg CO2/kg material 13
3.6
Embodied Energy, MJ/kg 190
51
Embodied Water, L/kg 250
150

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 43
27
Strength to Weight: Bending, points 32
23
Thermal Diffusivity, mm2/s 3.2
4.0
Thermal Shock Resistance, points 38
16

Alloy Composition

Aluminum (Al), % 0.2 to 0.8
0
Boron (B), % 0 to 0.0030
0
Carbon (C), % 0 to 0.080
0 to 0.080
Chromium (Cr), % 17 to 21
17.5 to 19.5
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 11.6 to 24.6
63 to 74.3
Manganese (Mn), % 0 to 0.35
3.5 to 6.5
Molybdenum (Mo), % 2.8 to 3.3
0.5 to 2.0
Nickel (Ni), % 50 to 55
4.0 to 6.5
Niobium (Nb), % 4.8 to 5.5
0.1 to 1.0
Nitrogen (N), % 0
0.080 to 0.3
Phosphorus (P), % 0 to 0.015
0 to 0.060
Silicon (Si), % 0 to 0.35
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030
Titanium (Ti), % 0.65 to 1.2
0
Residuals, % 0 to 0.5
0