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Grade TDC Steel vs. Automotive Malleable Cast Iron

Both grade TDC steel and automotive malleable cast iron are iron alloys. They have a very high 97% of their average alloy composition in common. There are 24 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 TDC steel and the bottom bar is automotive malleable cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 510
130 to 290
Elastic (Young's, Tensile) Modulus, GPa 190
180
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 80
70
Tensile Strength: Ultimate (UTS), MPa 1700
350 to 720

Thermal Properties

Latent Heat of Fusion, J/g 250
260
Melting Completion (Liquidus), °C 1450
1410
Melting Onset (Solidus), °C 1410
1370
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 51
41
Thermal Expansion, µm/m-K 13
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
1.9
Density, g/cm3 7.8
7.6
Embodied Carbon, kg CO2/kg material 1.4
1.5
Embodied Energy, MJ/kg 19
20
Embodied Water, L/kg 47
45

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 60
13 to 26
Strength to Weight: Bending, points 40
14 to 24
Thermal Diffusivity, mm2/s 14
11
Thermal Shock Resistance, points 50
9.9 to 21

Alloy Composition

Carbon (C), % 0.6 to 0.75
2.2 to 2.9
Chromium (Cr), % 0 to 0.3
0
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 98 to 99.4
93.6 to 96.7
Manganese (Mn), % 0.5 to 1.2
0.15 to 1.3
Phosphorus (P), % 0 to 0.020
0.020 to 0.15
Silicon (Si), % 0.1 to 0.35
0.9 to 1.9
Sulfur (S), % 0 to 0.020
0.020 to 0.2