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Class 1 Tungsten vs. EN 1.4308 Stainless Steel

Class 1 tungsten belongs to the otherwise unclassified metals classification, while EN 1.4308 stainless steel belongs to the iron alloys. 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 class 1 tungsten and the bottom bar is EN 1.4308 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 250
200
Elongation at Break, % 5.7
34
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 98
77
Tensile Strength: Ultimate (UTS), MPa 860
510
Tensile Strength: Yield (Proof), MPa 580
200

Thermal Properties

Latent Heat of Fusion, J/g 160
290
Specific Heat Capacity, J/kg-K 120
480
Thermal Conductivity, W/m-K 21
15
Thermal Expansion, µm/m-K 5.1
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 12
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 7.4
2.7

Otherwise Unclassified Properties

Density, g/cm3 15
7.8
Embodied Carbon, kg CO2/kg material 22
3.0
Embodied Energy, MJ/kg 340
43
Embodied Water, L/kg 140
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 44
140
Resilience: Unit (Modulus of Resilience), kJ/m3 660
100
Stiffness to Weight: Axial, points 9.6
14
Stiffness to Weight: Bending, points 14
25
Strength to Weight: Axial, points 16
18
Strength to Weight: Bending, points 14
18
Thermal Diffusivity, mm2/s 12
4.1
Thermal Shock Resistance, points 48
11

Alloy Composition

Carbon (C), % 0
0 to 0.070
Chromium (Cr), % 0
18 to 20
Iron (Fe), % 0
65.9 to 74
Manganese (Mn), % 0
0 to 1.5
Nickel (Ni), % 0
8.0 to 11
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 1.5
Sulfur (S), % 0
0 to 0.030
Tungsten (W), % 90
0
Residuals, % 10
0