Grade 31 Titanium vs. Automotive Grey Cast Iron

Grade 31 titanium belongs to the titanium alloys classification, while automotive grey cast iron belongs to the iron alloys. There are 26 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 31 titanium and the bottom bar is automotive grey cast iron.

Grade 31 (R53532) Titanium Automotive Grey Cast Iron

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		110
Elastic (Young's, Tensile) Modulus, GPa		180

Elongation at Break, %		20
Elongation at Break, %		9.6 to 14

Poisson's Ratio		0.32
Poisson's Ratio		0.29

Shear Modulus, GPa		41
Shear Modulus, GPa		69 to 70

Tensile Strength: Ultimate (UTS), MPa		510
Tensile Strength: Ultimate (UTS), MPa		140 to 290

Tensile Strength: Yield (Proof), MPa		450
Tensile Strength: Yield (Proof), MPa		94 to 200

Thermal Properties

Latent Heat of Fusion, J/g		420
Latent Heat of Fusion, J/g		260 to 280

Melting Completion (Liquidus), °C		1660
Melting Completion (Liquidus), °C		1380 to 1390

Melting Onset (Solidus), °C		1610
Melting Onset (Solidus), °C		1340 to 1350

Specific Heat Capacity, J/kg-K		540
Specific Heat Capacity, J/kg-K		490

Thermal Conductivity, W/m-K		21
Thermal Conductivity, W/m-K		41 to 43

Thermal Expansion, µm/m-K		8.7
Thermal Expansion, µm/m-K		12 to 14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS		3.4
Electrical Conductivity: Equal Volume, % IACS		7.4 to 7.6

Electrical Conductivity: Equal Weight (Specific), % IACS		6.9
Electrical Conductivity: Equal Weight (Specific), % IACS		8.8 to 9.1

Otherwise Unclassified Properties

Density, g/cm³		4.5
Density, g/cm³		7.5 to 7.6

Embodied Carbon, kg CO₂/kg material		36
Embodied Carbon, kg CO₂/kg material		1.5 to 1.7

Embodied Energy, MJ/kg		600
Embodied Energy, MJ/kg		21 to 24

Embodied Water, L/kg		230
Embodied Water, L/kg		44 to 51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m³		99
Resilience: Ultimate (Unit Rupture Work), MJ/m³		18 to 25

Resilience: Unit (Modulus of Resilience), kJ/m³		940
Resilience: Unit (Modulus of Resilience), kJ/m³		25 to 110

Stiffness to Weight: Axial, points		13
Stiffness to Weight: Axial, points		13

Stiffness to Weight: Bending, points		35
Stiffness to Weight: Bending, points		25

Strength to Weight: Axial, points		32
Strength to Weight: Axial, points		5.2 to 11

Strength to Weight: Bending, points		32
Strength to Weight: Bending, points		8.0 to 13

Thermal Diffusivity, mm²/s		8.5
Thermal Diffusivity, mm²/s		11 to 12

Thermal Shock Resistance, points		39
Thermal Shock Resistance, points		4.2 to 8.6