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SAE-AISI T8 Steel vs. Grade VDC Steel

Both SAE-AISI T8 steel and grade VDC 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 (6, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI T8 steel and the bottom bar is grade VDC 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
80
Tensile Strength: Ultimate (UTS), MPa 780 to 2140
1700

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
51
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 45
1.9
Density, g/cm3 9.0
7.8
Embodied Carbon, kg CO2/kg material 10
1.4
Embodied Energy, MJ/kg 160
19
Embodied Water, L/kg 120
47

Common Calculations

Stiffness to Weight: Axial, points 12
13
Stiffness to Weight: Bending, points 22
24
Strength to Weight: Axial, points 24 to 66
60
Strength to Weight: Bending, points 21 to 41
40
Thermal Diffusivity, mm2/s 4.8
14
Thermal Shock Resistance, points 24 to 66
50

Alloy Composition

Carbon (C), % 0.75 to 0.85
0.6 to 0.75
Chromium (Cr), % 3.8 to 4.5
0 to 0.3
Cobalt (Co), % 4.3 to 5.8
0
Copper (Cu), % 0 to 0.25
0 to 0.060
Iron (Fe), % 69.3 to 75.4
98.3 to 99.35
Manganese (Mn), % 0.2 to 0.4
0.5 to 1.0
Molybdenum (Mo), % 0.4 to 1.0
0
Nickel (Ni), % 0 to 0.3
0
Phosphorus (P), % 0 to 0.030
0 to 0.020
Silicon (Si), % 0.2 to 0.4
0.15 to 0.3
Sulfur (S), % 0 to 0.030
0 to 0.020
Tungsten (W), % 13.3 to 14.8
0
Vanadium (V), % 1.8 to 2.4
0