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S21800 Stainless Steel vs. AISI W2 Steel

Both S21800 stainless steel and AISI W2 steel are iron alloys. They have 63% of their average alloy composition in common. There are 19 material properties with values for both materials. Properties with values for just one material (16, in this case) are not shown.

For each property being compared, the top bar is S21800 stainless steel and the bottom bar is AISI W2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
72
Tensile Strength: Ultimate (UTS), MPa 740
580 to 2400

Thermal Properties

Latent Heat of Fusion, J/g 340
250
Melting Completion (Liquidus), °C 1360
1450
Melting Onset (Solidus), °C 1310
1410
Specific Heat Capacity, J/kg-K 500
470
Thermal Expansion, µm/m-K 16
12

Otherwise Unclassified Properties

Base Metal Price, % relative 15
2.3
Density, g/cm3 7.5
7.8
Embodied Carbon, kg CO2/kg material 3.1
2.0
Embodied Energy, MJ/kg 45
29
Embodied Water, L/kg 150
48

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 26
24
Strength to Weight: Axial, points 27
21 to 86
Strength to Weight: Bending, points 24
20 to 51
Thermal Shock Resistance, points 17
19 to 80

Alloy Composition

Carbon (C), % 0 to 0.1
0.85 to 1.5
Chromium (Cr), % 16 to 18
0 to 0.15
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 59.1 to 65.4
96.2 to 98.6
Manganese (Mn), % 7.0 to 9.0
0.35 to 0.74
Molybdenum (Mo), % 0
0 to 0.1
Nickel (Ni), % 8.0 to 9.0
0 to 0.2
Nitrogen (N), % 0.080 to 0.18
0
Phosphorus (P), % 0 to 0.060
0 to 0.025
Silicon (Si), % 3.5 to 4.5
0.1 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.025
Tungsten (W), % 0
0 to 0.15
Vanadium (V), % 0
0.15 to 0.35