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Automotive Malleable Cast Iron vs. Grade 9 Titanium

Automotive malleable cast iron belongs to the iron alloys classification, while grade 9 titanium belongs to the titanium alloys. There are 27 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is automotive malleable cast iron and the bottom bar is grade 9 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
110
Elongation at Break, % 1.0 to 10
11 to 17
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 70
40
Tensile Strength: Ultimate (UTS), MPa 350 to 720
700 to 960
Tensile Strength: Yield (Proof), MPa 220 to 590
540 to 830

Thermal Properties

Latent Heat of Fusion, J/g 260
410
Melting Completion (Liquidus), °C 1410
1640
Melting Onset (Solidus), °C 1370
1590
Specific Heat Capacity, J/kg-K 480
550
Thermal Conductivity, W/m-K 41
8.1
Thermal Expansion, µm/m-K 14
9.1

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
37
Density, g/cm3 7.6
4.5
Embodied Carbon, kg CO2/kg material 1.5
36
Embodied Energy, MJ/kg 20
580
Embodied Water, L/kg 45
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.8 to 30
89 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 130 to 950
1380 to 3220
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 13 to 26
43 to 60
Strength to Weight: Bending, points 14 to 24
39 to 48
Thermal Diffusivity, mm2/s 11
3.3
Thermal Shock Resistance, points 9.9 to 21
52 to 71

Alloy Composition

Aluminum (Al), % 0
2.5 to 3.5
Carbon (C), % 2.2 to 2.9
0 to 0.080
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 93.6 to 96.7
0 to 0.25
Manganese (Mn), % 0.15 to 1.3
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.15
Phosphorus (P), % 0.020 to 0.15
0
Silicon (Si), % 0.9 to 1.9
0
Sulfur (S), % 0.020 to 0.2
0
Titanium (Ti), % 0
92.6 to 95.5
Vanadium (V), % 0
2.0 to 3.0
Residuals, % 0
0 to 0.4

Comparable Variants