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ASTM A356 Grade 8 vs. Grade TDSiCrV Steel

Both ASTM A356 grade 8 and grade TDSiCrV steel 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 ASTM A356 grade 8 and the bottom bar is grade TDSiCrV steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
630
Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.29
Reduction in Area, % 50
48
Shear Modulus, GPa 73
80
Tensile Strength: Ultimate (UTS), MPa 630
2100

Thermal Properties

Latent Heat of Fusion, J/g 260
270
Maximum Temperature: Mechanical, °C 440
420
Melting Completion (Liquidus), °C 1470
1440
Melting Onset (Solidus), °C 1430
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 38
47
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.5
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 3.5
2.3
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 2.0
1.9
Embodied Energy, MJ/kg 26
26
Embodied Water, L/kg 55
50

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 22
75
Strength to Weight: Bending, points 21
47
Thermal Diffusivity, mm2/s 10
13
Thermal Shock Resistance, points 18
63

Alloy Composition

Carbon (C), % 0 to 0.2
0.5 to 0.7
Chromium (Cr), % 1.0 to 1.5
0.5 to 1.0
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 95.4 to 97.4
96.1 to 97.8
Manganese (Mn), % 0.5 to 0.9
0.4 to 0.9
Molybdenum (Mo), % 0.9 to 1.2
0
Phosphorus (P), % 0 to 0.035
0 to 0.020
Silicon (Si), % 0.2 to 0.6
1.2 to 1.7
Sulfur (S), % 0 to 0.030
0 to 0.020
Vanadium (V), % 0.050 to 0.15
0.1 to 0.25