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S31254 Stainless Steel vs. AISI W5 Steel

Both S31254 stainless steel and AISI W5 steel are iron alloys. They have 55% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is S31254 stainless steel and the bottom bar is AISI W5 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 80
72
Tensile Strength: Ultimate (UTS), MPa 720
600 to 2360

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 460
470
Thermal Conductivity, W/m-K 14
45
Thermal Expansion, µm/m-K 17
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 28
2.3
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 5.5
1.6
Embodied Energy, MJ/kg 74
21
Embodied Water, L/kg 190
48

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 25
21 to 84
Strength to Weight: Bending, points 22
20 to 50
Thermal Diffusivity, mm2/s 3.8
12
Thermal Shock Resistance, points 15
20 to 78

Alloy Composition

Carbon (C), % 0 to 0.020
1.1 to 1.2
Chromium (Cr), % 19.5 to 20.5
0.4 to 0.6
Copper (Cu), % 0.5 to 1.0
0 to 0.2
Iron (Fe), % 51.4 to 56.3
96.6 to 98.4
Manganese (Mn), % 0 to 1.0
0.1 to 0.4
Molybdenum (Mo), % 6.0 to 6.5
0 to 0.1
Nickel (Ni), % 17.5 to 18.5
0 to 0.2
Nitrogen (N), % 0.18 to 0.22
0
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0 to 0.8
0.1 to 0.4
Sulfur (S), % 0 to 0.010
0 to 0.030
Tungsten (W), % 0
0 to 0.15
Vanadium (V), % 0
0 to 0.1