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S21640 Stainless Steel vs. AWS ERNiMo-3

S21640 stainless steel belongs to the iron alloys classification, while AWS ERNiMo-3 belongs to the nickel alloys. There are 19 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is S21640 stainless steel and the bottom bar is AWS ERNiMo-3.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
220
Poisson's Ratio 0.28
0.3
Shear Modulus, GPa 78
83
Tensile Strength: Ultimate (UTS), MPa 740
770

Thermal Properties

Latent Heat of Fusion, J/g 290
320
Melting Completion (Liquidus), °C 1430
1600
Melting Onset (Solidus), °C 1380
1540
Specific Heat Capacity, J/kg-K 480
400
Thermal Expansion, µm/m-K 17
11

Otherwise Unclassified Properties

Base Metal Price, % relative 17
70
Density, g/cm3 7.7
9.1
Embodied Carbon, kg CO2/kg material 3.6
15
Embodied Energy, MJ/kg 51
190
Embodied Water, L/kg 150
270

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
22
Strength to Weight: Axial, points 27
24
Strength to Weight: Bending, points 23
21
Thermal Shock Resistance, points 16
24

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.12
Chromium (Cr), % 17.5 to 19.5
4.0 to 6.0
Cobalt (Co), % 0
0 to 2.5
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 63 to 74.3
4.0 to 7.0
Manganese (Mn), % 3.5 to 6.5
0 to 1.0
Molybdenum (Mo), % 0.5 to 2.0
23 to 26
Nickel (Ni), % 4.0 to 6.5
53.7 to 69
Niobium (Nb), % 0.1 to 1.0
0
Nitrogen (N), % 0.080 to 0.3
0
Phosphorus (P), % 0 to 0.060
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 0
0 to 1.0
Vanadium (V), % 0
0 to 0.6
Residuals, % 0
0 to 0.5