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Grade 27 Titanium vs. Automotive Malleable Cast Iron

Grade 27 titanium belongs to the titanium alloys classification, while automotive malleable cast iron belongs to the iron 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 grade 27 titanium and the bottom bar is automotive malleable cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
180
Elongation at Break, % 27
1.0 to 10
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 41
70
Tensile Strength: Ultimate (UTS), MPa 270
350 to 720
Tensile Strength: Yield (Proof), MPa 230
220 to 590

Thermal Properties

Latent Heat of Fusion, J/g 420
260
Melting Completion (Liquidus), °C 1660
1410
Melting Onset (Solidus), °C 1610
1370
Specific Heat Capacity, J/kg-K 540
480
Thermal Conductivity, W/m-K 21
41
Thermal Expansion, µm/m-K 8.7
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 37
1.9
Density, g/cm3 4.5
7.6
Embodied Carbon, kg CO2/kg material 33
1.5
Embodied Energy, MJ/kg 530
20
Embodied Water, L/kg 320
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 70
6.8 to 30
Resilience: Unit (Modulus of Resilience), kJ/m3 240
130 to 950
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 17
13 to 26
Strength to Weight: Bending, points 21
14 to 24
Thermal Diffusivity, mm2/s 8.8
11
Thermal Shock Resistance, points 21
9.9 to 21

Alloy Composition

Carbon (C), % 0 to 0.080
2.2 to 2.9
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.2
93.6 to 96.7
Manganese (Mn), % 0
0.15 to 1.3
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.18
0
Phosphorus (P), % 0
0.020 to 0.15
Ruthenium (Ru), % 0.080 to 0.14
0
Silicon (Si), % 0
0.9 to 1.9
Sulfur (S), % 0
0.020 to 0.2
Titanium (Ti), % 99 to 99.92
0
Residuals, % 0 to 0.4
0