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SAE-AISI T8 Steel vs. AISI W2 Steel

Both SAE-AISI T8 steel and AISI W2 steel are iron alloys. They have 74% of their average alloy composition in common. There are 21 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI T8 steel and the bottom bar is AISI W2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 78
72
Tensile Strength: Ultimate (UTS), MPa 780 to 2140
580 to 2400

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Melting Completion (Liquidus), °C 1730
1450
Melting Onset (Solidus), °C 1670
1410
Specific Heat Capacity, J/kg-K 420
470
Thermal Conductivity, W/m-K 18
45
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Base Metal Price, % relative 45
2.3
Density, g/cm3 9.0
7.8
Embodied Carbon, kg CO2/kg material 10
2.0
Embodied Energy, MJ/kg 160
29
Embodied Water, L/kg 120
48

Common Calculations

Stiffness to Weight: Axial, points 12
13
Stiffness to Weight: Bending, points 22
24
Strength to Weight: Axial, points 24 to 66
21 to 86
Strength to Weight: Bending, points 21 to 41
20 to 51
Thermal Diffusivity, mm2/s 4.8
12
Thermal Shock Resistance, points 24 to 66
19 to 80

Alloy Composition

Carbon (C), % 0.75 to 0.85
0.85 to 1.5
Chromium (Cr), % 3.8 to 4.5
0 to 0.15
Cobalt (Co), % 4.3 to 5.8
0
Copper (Cu), % 0 to 0.25
0 to 0.2
Iron (Fe), % 69.3 to 75.4
96.2 to 98.6
Manganese (Mn), % 0.2 to 0.4
0.35 to 0.74
Molybdenum (Mo), % 0.4 to 1.0
0 to 0.1
Nickel (Ni), % 0 to 0.3
0 to 0.2
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0.2 to 0.4
0.1 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.025
Tungsten (W), % 13.3 to 14.8
0 to 0.15
Vanadium (V), % 1.8 to 2.4
0.15 to 0.35

Comparable Variants