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Class 3 Tungsten vs. SAE-AISI 9255 Steel

Class 3 tungsten belongs to the otherwise unclassified metals classification, while SAE-AISI 9255 steel belongs to the iron alloys. There are 24 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is class 3 tungsten and the bottom bar is SAE-AISI 9255 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 270
190
Elongation at Break, % 3.4
21
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 100
72
Tensile Strength: Ultimate (UTS), MPa 830
680
Tensile Strength: Yield (Proof), MPa 580
390

Thermal Properties

Latent Heat of Fusion, J/g 170
280
Specific Heat Capacity, J/kg-K 120
480
Thermal Conductivity, W/m-K 30
46
Thermal Expansion, µm/m-K 4.5
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 15
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5
8.6

Otherwise Unclassified Properties

Density, g/cm3 15
7.7
Embodied Carbon, kg CO2/kg material 23
1.5
Embodied Energy, MJ/kg 360
20
Embodied Water, L/kg 150
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 25
120
Resilience: Unit (Modulus of Resilience), kJ/m3 630
400
Stiffness to Weight: Axial, points 9.6
13
Stiffness to Weight: Bending, points 14
25
Strength to Weight: Axial, points 15
24
Strength to Weight: Bending, points 13
22
Thermal Diffusivity, mm2/s 15
13
Thermal Shock Resistance, points 49
21

Alloy Composition

Carbon (C), % 0
0.51 to 0.59
Iron (Fe), % 0
96.2 to 97
Manganese (Mn), % 0
0.7 to 1.0
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0
1.8 to 2.2
Sulfur (S), % 0
0 to 0.040
Tungsten (W), % 95
0
Residuals, % 5.0
0