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AWS ERNiCrFe-6 vs. S21900 Stainless Steel

AWS ERNiCrFe-6 belongs to the nickel alloys classification, while S21900 stainless steel belongs to the iron alloys. They have a modest 29% 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 (10, in this case) are not shown.

For each property being compared, the top bar is AWS ERNiCrFe-6 and the bottom bar is S21900 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 34
50
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 74
78
Tensile Strength: Ultimate (UTS), MPa 630
710

Thermal Properties

Latent Heat of Fusion, J/g 310
290
Melting Completion (Liquidus), °C 1370
1400
Melting Onset (Solidus), °C 1320
1350
Specific Heat Capacity, J/kg-K 460
480
Thermal Conductivity, W/m-K 13
14
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.4
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 1.5
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 55
15
Density, g/cm3 8.4
7.7
Embodied Carbon, kg CO2/kg material 9.8
3.0
Embodied Energy, MJ/kg 140
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 21
26
Strength to Weight: Bending, points 19
23
Thermal Diffusivity, mm2/s 3.3
3.8
Thermal Shock Resistance, points 19
15

Alloy Composition


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Carbon (C), % 0 to 0.080
0 to 0.080
Chromium (Cr), % 14 to 17
19 to 21.5
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 0 to 8.0
59.4 to 67.4
Manganese (Mn), % 2.0 to 2.7
8.0 to 10
Nickel (Ni), % 67 to 81.5
5.5 to 7.5
Nitrogen (N), % 0
0.15 to 0.4
Phosphorus (P), % 0 to 0.030
0 to 0.045
Silicon (Si), % 0 to 0.35
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030
Titanium (Ti), % 2.5 to 3.5
0
Residuals, % 0 to 0.5
0