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Grade VDSiCrV Steel vs. SAE-AISI 9255 Steel

Both grade VDSiCrV steel and SAE-AISI 9255 steel are iron alloys. Their average alloy composition is basically identical. There are 25 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is grade VDSiCrV steel and the bottom bar is SAE-AISI 9255 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 630
200
Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 80
72
Tensile Strength: Ultimate (UTS), MPa 2100
680

Thermal Properties

Latent Heat of Fusion, J/g 270
280
Maximum Temperature: Mechanical, °C 420
400
Melting Completion (Liquidus), °C 1440
1430
Melting Onset (Solidus), °C 1400
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 47
46
Thermal Expansion, µm/m-K 13
13

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 2.3
2.0
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 1.9
1.5
Embodied Energy, MJ/kg 26
20
Embodied Water, L/kg 50
46

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 75
24
Strength to Weight: Bending, points 47
22
Thermal Diffusivity, mm2/s 13
13
Thermal Shock Resistance, points 63
21

Alloy Composition

Carbon (C), % 0.5 to 0.7
0.51 to 0.59
Chromium (Cr), % 0.5 to 1.0
0
Copper (Cu), % 0 to 0.060
0
Iron (Fe), % 96.1 to 97.8
96.2 to 97
Manganese (Mn), % 0.4 to 0.9
0.7 to 1.0
Phosphorus (P), % 0 to 0.020
0 to 0.035
Silicon (Si), % 1.2 to 1.7
1.8 to 2.2
Sulfur (S), % 0 to 0.020
0 to 0.040
Vanadium (V), % 0.1 to 0.25
0