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SAE-AISI 9255 Steel vs. Class 3 Tungsten

SAE-AISI 9255 steel belongs to the iron alloys classification, while class 3 tungsten belongs to the otherwise unclassified metals. 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 SAE-AISI 9255 steel and the bottom bar is class 3 tungsten.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Electrical Properties

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

Otherwise Unclassified Properties

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

Common Calculations

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

Alloy Composition

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