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SAE-AISI T15 Steel vs. Ductile Cast Iron

Both SAE-AISI T15 steel and ductile cast iron are iron alloys. They have 72% of their average alloy composition in common. There are 21 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI T15 steel and the bottom bar is ductile cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
170 to 180
Poisson's Ratio 0.29
0.28 to 0.31
Shear Modulus, GPa 76
64 to 70
Tensile Strength: Ultimate (UTS), MPa 830 to 2240
460 to 920

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Melting Completion (Liquidus), °C 1690
1160
Melting Onset (Solidus), °C 1640
1120
Specific Heat Capacity, J/kg-K 430
490
Thermal Conductivity, W/m-K 21
31 to 36
Thermal Expansion, µm/m-K 12
11

Otherwise Unclassified Properties

Base Metal Price, % relative 43
1.9
Density, g/cm3 8.7
7.1 to 7.5
Embodied Carbon, kg CO2/kg material 16
1.5
Embodied Energy, MJ/kg 250
21
Embodied Water, L/kg 140
43

Common Calculations

Stiffness to Weight: Axial, points 13
12 to 14
Stiffness to Weight: Bending, points 22
24 to 26
Strength to Weight: Axial, points 26 to 71
17 to 35
Strength to Weight: Bending, points 22 to 43
18 to 29
Thermal Diffusivity, mm2/s 5.6
8.9 to 10
Thermal Shock Resistance, points 26 to 70
17 to 35

Alloy Composition

Carbon (C), % 1.5 to 1.6
3.0 to 3.5
Chromium (Cr), % 3.8 to 5.0
0
Cobalt (Co), % 4.8 to 5.3
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 67.5 to 73.5
93.7 to 95.5
Manganese (Mn), % 0.15 to 0.4
0
Molybdenum (Mo), % 0 to 1.0
0
Nickel (Ni), % 0 to 0.3
0
Phosphorus (P), % 0 to 0.030
0 to 0.080
Silicon (Si), % 0.15 to 0.4
1.5 to 2.8
Sulfur (S), % 0 to 0.030
0
Tungsten (W), % 11.8 to 13
0
Vanadium (V), % 4.5 to 5.3
0

Comparable Variants