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Grade VDSiCr Steel vs. Grade TDSiCrV Steel

Both grade VDSiCr steel and grade TDSiCrV steel are iron alloys. Both are furnished in the hardened (H) condition. Their average alloy composition is basically identical.

For each property being compared, the top bar is grade VDSiCr steel and the bottom bar is grade TDSiCrV steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 590
630
Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.29
Reduction in Area, % 48
48
Shear Modulus, GPa 80
80
Tensile Strength: Ultimate (UTS), MPa 1950
2100

Thermal Properties

Latent Heat of Fusion, J/g 270
270
Maximum Temperature: Mechanical, °C 410
420
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 46
47
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 2.2
2.3
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 1.5
1.9
Embodied Energy, MJ/kg 20
26
Embodied Water, L/kg 48
50

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 70
75
Strength to Weight: Bending, points 45
47
Thermal Diffusivity, mm2/s 12
13
Thermal Shock Resistance, points 58
63

Alloy Composition

Carbon (C), % 0.5 to 0.6
0.5 to 0.7
Chromium (Cr), % 0.5 to 0.8
0.5 to 1.0
Copper (Cu), % 0 to 0.060
0 to 0.1
Iron (Fe), % 96.6 to 97.8
96.1 to 97.8
Manganese (Mn), % 0.5 to 0.9
0.4 to 0.9
Phosphorus (P), % 0 to 0.025
0 to 0.020
Silicon (Si), % 1.2 to 1.6
1.2 to 1.7
Sulfur (S), % 0 to 0.020
0 to 0.020
Vanadium (V), % 0
0.1 to 0.25