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Grade VDC Steel vs. ASTM A356 Grade 8

Both grade VDC steel and ASTM A356 grade 8 are iron alloys. They have a very high 98% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is grade VDC steel and the bottom bar is ASTM A356 grade 8.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 510
190
Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.29
Reduction in Area, % 50
50
Shear Modulus, GPa 80
73
Tensile Strength: Ultimate (UTS), MPa 1700
630

Thermal Properties

Latent Heat of Fusion, J/g 250
260
Maximum Temperature: Mechanical, °C 400
440
Melting Completion (Liquidus), °C 1450
1470
Melting Onset (Solidus), °C 1410
1430
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 51
38
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
3.5
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
2.0
Embodied Energy, MJ/kg 19
26
Embodied Water, L/kg 47
55

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 60
22
Strength to Weight: Bending, points 40
21
Thermal Diffusivity, mm2/s 14
10
Thermal Shock Resistance, points 50
18

Alloy Composition

Carbon (C), % 0.6 to 0.75
0 to 0.2
Chromium (Cr), % 0 to 0.3
1.0 to 1.5
Copper (Cu), % 0 to 0.060
0
Iron (Fe), % 98.3 to 99.35
95.4 to 97.4
Manganese (Mn), % 0.5 to 1.0
0.5 to 0.9
Molybdenum (Mo), % 0
0.9 to 1.2
Phosphorus (P), % 0 to 0.020
0 to 0.035
Silicon (Si), % 0.15 to 0.3
0.2 to 0.6
Sulfur (S), % 0 to 0.020
0 to 0.030
Vanadium (V), % 0
0.050 to 0.15