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Grade 33 Titanium vs. Automotive Grey Cast Iron

Grade 33 titanium belongs to the titanium alloys classification, while automotive grey 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 33 titanium and the bottom bar is automotive grey cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
180
Elongation at Break, % 23
9.6 to 14
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 41
69 to 70
Tensile Strength: Ultimate (UTS), MPa 390
140 to 290
Tensile Strength: Yield (Proof), MPa 350
94 to 200

Thermal Properties

Latent Heat of Fusion, J/g 420
260 to 280
Melting Completion (Liquidus), °C 1660
1380 to 1390
Melting Onset (Solidus), °C 1610
1340 to 1350
Specific Heat Capacity, J/kg-K 540
490
Thermal Conductivity, W/m-K 21
41 to 43
Thermal Expansion, µm/m-K 8.7
12 to 14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.4
7.4 to 7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 6.9
8.8 to 9.1

Otherwise Unclassified Properties

Base Metal Price, % relative 55
1.9 to 3.0
Density, g/cm3 4.5
7.5 to 7.6
Embodied Carbon, kg CO2/kg material 33
1.5 to 1.7
Embodied Energy, MJ/kg 530
21 to 24
Embodied Water, L/kg 200
44 to 51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 86
18 to 25
Resilience: Unit (Modulus of Resilience), kJ/m3 590
25 to 110
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 24
5.2 to 11
Strength to Weight: Bending, points 26
8.0 to 13
Thermal Diffusivity, mm2/s 8.7
11 to 12
Thermal Shock Resistance, points 30
4.2 to 8.6