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EN 1.7220 Steel vs. Grade VDSiCrV Steel

Both EN 1.7220 steel and grade VDSiCrV steel are iron alloys. They have a very high 99% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is EN 1.7220 steel and the bottom bar is grade VDSiCrV steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 290
630
Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
80
Tensile Strength: Ultimate (UTS), MPa 520 to 1720
2100

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Maximum Temperature: Mechanical, °C 420
420
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1420
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 44
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 8.4
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 2.5
2.3
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.5
1.9
Embodied Energy, MJ/kg 20
26
Embodied Water, L/kg 51
50

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 18 to 61
75
Strength to Weight: Bending, points 18 to 41
47
Thermal Diffusivity, mm2/s 12
13
Thermal Shock Resistance, points 15 to 50
63

Alloy Composition

Carbon (C), % 0.3 to 0.37
0.5 to 0.7
Chromium (Cr), % 0.9 to 1.2
0.5 to 1.0
Copper (Cu), % 0
0 to 0.060
Iron (Fe), % 96.8 to 98.1
96.1 to 97.8
Manganese (Mn), % 0.6 to 0.9
0.4 to 0.9
Molybdenum (Mo), % 0.15 to 0.3
0
Phosphorus (P), % 0 to 0.035
0 to 0.020
Silicon (Si), % 0 to 0.4
1.2 to 1.7
Sulfur (S), % 0 to 0.035
0 to 0.020
Vanadium (V), % 0
0.1 to 0.25