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SAE-AISI A9 Steel vs. Class 2 Tungsten

SAE-AISI A9 steel belongs to the iron alloys classification, while class 2 tungsten belongs to the otherwise unclassified metals. There are 20 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI A9 steel and the bottom bar is class 2 tungsten.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
260
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 74
100
Tensile Strength: Ultimate (UTS), MPa 770 to 2030
860

Thermal Properties

Latent Heat of Fusion, J/g 280
160
Specific Heat Capacity, J/kg-K 470
120
Thermal Conductivity, W/m-K 35
20
Thermal Expansion, µm/m-K 12
4.6

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.9
13
Electrical Conductivity: Equal Weight (Specific), % IACS 9.2
7.8

Otherwise Unclassified Properties

Density, g/cm3 7.8
15
Embodied Carbon, kg CO2/kg material 4.7
23
Embodied Energy, MJ/kg 70
350
Embodied Water, L/kg 82
140

Common Calculations

Stiffness to Weight: Axial, points 14
9.6
Stiffness to Weight: Bending, points 25
14
Strength to Weight: Axial, points 28 to 73
16
Strength to Weight: Bending, points 24 to 46
13
Thermal Diffusivity, mm2/s 9.6
11
Thermal Shock Resistance, points 25 to 66
52

Alloy Composition


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Carbon (C), % 0.45 to 0.55
0
Chromium (Cr), % 4.8 to 5.5
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 87 to 90.5
0
Manganese (Mn), % 0 to 0.5
0
Molybdenum (Mo), % 1.3 to 1.8
0
Nickel (Ni), % 1.3 to 1.8
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 1.0 to 1.2
0
Sulfur (S), % 0 to 0.030
0
Tungsten (W), % 0
92.5
Vanadium (V), % 0.8 to 1.4
0
Residuals, % 0
7.5