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Grade VDC Steel vs. ASTM Grade HP Steel

Both grade VDC steel and ASTM grade HP 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 grade VDC steel and the bottom bar is ASTM grade HP steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 510
140
Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 80
78
Tensile Strength: Ultimate (UTS), MPa 1700
490

Thermal Properties

Latent Heat of Fusion, J/g 250
320
Maximum Temperature: Mechanical, °C 400
1100
Melting Completion (Liquidus), °C 1450
1370
Melting Onset (Solidus), °C 1410
1330
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 51
12
Thermal Expansion, µm/m-K 13
16

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
34
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.4
5.8
Embodied Energy, MJ/kg 19
82
Embodied Water, L/kg 47
220

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 60
17
Strength to Weight: Bending, points 40
17
Thermal Diffusivity, mm2/s 14
3.2
Thermal Shock Resistance, points 50
11

Alloy Composition

Carbon (C), % 0.6 to 0.75
0.35 to 0.75
Chromium (Cr), % 0 to 0.3
24 to 28
Copper (Cu), % 0 to 0.060
0
Iron (Fe), % 98.3 to 99.35
29.2 to 42.7
Manganese (Mn), % 0.5 to 1.0
0 to 2.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
33 to 37
Phosphorus (P), % 0 to 0.020
0 to 0.040
Silicon (Si), % 0.15 to 0.3
0 to 2.5
Sulfur (S), % 0 to 0.020
0 to 0.040