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Class 4 Tungsten vs. SAE-AISI M33 Steel

Class 4 tungsten belongs to the otherwise unclassified metals classification, while SAE-AISI M33 steel belongs to the iron alloys. There are 18 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is class 4 tungsten and the bottom bar is SAE-AISI M33 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 270
200
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 110
78
Tensile Strength: Ultimate (UTS), MPa 790
810 to 2210

Thermal Properties

Latent Heat of Fusion, J/g 170
270
Specific Heat Capacity, J/kg-K 130
440
Thermal Conductivity, W/m-K 30
20
Thermal Expansion, µm/m-K 4.5
12

Otherwise Unclassified Properties

Density, g/cm3 16
8.2
Embodied Carbon, kg CO2/kg material 24
7.7
Embodied Energy, MJ/kg 360
110
Embodied Water, L/kg 150
150

Common Calculations

Stiffness to Weight: Axial, points 9.6
14
Stiffness to Weight: Bending, points 14
24
Strength to Weight: Axial, points 14
27 to 75
Strength to Weight: Bending, points 12
24 to 46
Thermal Diffusivity, mm2/s 15
5.5
Thermal Shock Resistance, points 46
25 to 68

Alloy Composition

Carbon (C), % 0
0.85 to 0.92
Chromium (Cr), % 0
3.5 to 4.0
Cobalt (Co), % 0
7.8 to 8.8
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 0
71.4 to 76.3
Manganese (Mn), % 0
0.15 to 0.4
Molybdenum (Mo), % 0
9.0 to 10
Nickel (Ni), % 0
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
0.15 to 0.5
Sulfur (S), % 0
0 to 0.030
Tungsten (W), % 97
1.3 to 2.1
Vanadium (V), % 0
1.0 to 1.4
Residuals, % 3.0
0