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S31727 Stainless Steel vs. Class 1 Tungsten

S31727 stainless steel belongs to the iron alloys classification, while class 1 tungsten belongs to the otherwise unclassified metals. There are 20 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 S31727 stainless steel and the bottom bar is class 1 tungsten.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
250
Elongation at Break, % 40
5.7
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
98
Tensile Strength: Ultimate (UTS), MPa 630
860
Tensile Strength: Yield (Proof), MPa 270
580

Thermal Properties

Latent Heat of Fusion, J/g 290
160
Specific Heat Capacity, J/kg-K 470
120
Thermal Expansion, µm/m-K 16
5.1

Otherwise Unclassified Properties

Density, g/cm3 8.0
15
Embodied Carbon, kg CO2/kg material 4.7
22
Embodied Energy, MJ/kg 64
340
Embodied Water, L/kg 180
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
44
Resilience: Unit (Modulus of Resilience), kJ/m3 190
660
Stiffness to Weight: Axial, points 14
9.6
Stiffness to Weight: Bending, points 24
14
Strength to Weight: Axial, points 22
16
Strength to Weight: Bending, points 20
14
Thermal Shock Resistance, points 14
48

Alloy Composition

Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 17.5 to 19
0
Copper (Cu), % 2.8 to 4.0
0
Iron (Fe), % 53.7 to 61.3
0
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 3.8 to 4.5
0
Nickel (Ni), % 14.5 to 16.5
0
Nitrogen (N), % 0.15 to 0.21
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.030
0
Tungsten (W), % 0
90
Residuals, % 0
10