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ASTM Grade HP Steel vs. Grade VDCrV Steel

Both ASTM grade HP steel and grade VDCrV steel are iron alloys. They have a modest 38% of their average alloy composition in common, which, by itself, doesn't mean much. There are 23 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is ASTM grade HP steel and the bottom bar is grade VDCrV steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
520
Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
80
Tensile Strength: Ultimate (UTS), MPa 490
1730

Thermal Properties

Latent Heat of Fusion, J/g 320
250
Maximum Temperature: Mechanical, °C 1100
410
Melting Completion (Liquidus), °C 1370
1450
Melting Onset (Solidus), °C 1330
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 12
49
Thermal Expansion, µm/m-K 16
13

Otherwise Unclassified Properties

Base Metal Price, % relative 34
2.1
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 5.8
1.9
Embodied Energy, MJ/kg 82
26
Embodied Water, L/kg 220
49

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 17
61
Strength to Weight: Bending, points 17
41
Thermal Diffusivity, mm2/s 3.2
13
Thermal Shock Resistance, points 11
51

Alloy Composition

Carbon (C), % 0.35 to 0.75
0.62 to 0.72
Chromium (Cr), % 24 to 28
0.4 to 0.6
Copper (Cu), % 0
0 to 0.060
Iron (Fe), % 29.2 to 42.7
97.8 to 98.8
Manganese (Mn), % 0 to 2.0
0.5 to 0.9
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 33 to 37
0
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 2.5
0.15 to 0.3
Sulfur (S), % 0 to 0.040
0 to 0.020
Vanadium (V), % 0
0.15 to 0.25