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SAE-AISI D7 Steel vs. Grade VDSiCrV Steel

Both SAE-AISI D7 steel and grade VDSiCrV steel are iron alloys. They have 81% 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 D7 steel and the bottom bar is grade VDSiCrV steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 73
80
Tensile Strength: Ultimate (UTS), MPa 800 to 2120
2100

Thermal Properties

Latent Heat of Fusion, J/g 270
270
Melting Completion (Liquidus), °C 1440
1440
Melting Onset (Solidus), °C 1400
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 27
47
Thermal Expansion, µm/m-K 11
13

Otherwise Unclassified Properties

Base Metal Price, % relative 10
2.3
Density, g/cm3 7.6
7.7
Embodied Carbon, kg CO2/kg material 11
1.9
Embodied Energy, MJ/kg 180
26
Embodied Water, L/kg 130
50

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 29 to 78
75
Strength to Weight: Bending, points 25 to 48
47
Thermal Diffusivity, mm2/s 7.4
13
Thermal Shock Resistance, points 27 to 72
63

Alloy Composition

Carbon (C), % 2.2 to 2.5
0.5 to 0.7
Chromium (Cr), % 11.5 to 13.5
0.5 to 1.0
Copper (Cu), % 0 to 0.25
0 to 0.060
Iron (Fe), % 76.6 to 81.9
96.1 to 97.8
Manganese (Mn), % 0 to 0.6
0.4 to 0.9
Molybdenum (Mo), % 0.7 to 1.2
0
Nickel (Ni), % 0 to 0.3
0
Phosphorus (P), % 0 to 0.030
0 to 0.020
Silicon (Si), % 0 to 0.6
1.2 to 1.7
Sulfur (S), % 0 to 0.030
0 to 0.020
Vanadium (V), % 3.8 to 4.4
0.1 to 0.25