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Grade 27 Titanium vs. Austenitic Nodular Cast Iron

Grade 27 titanium belongs to the titanium alloys classification, while austenitic nodular cast iron belongs to the iron alloys. There are 23 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is grade 27 titanium and the bottom bar is austenitic nodular cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
180 to 190
Elongation at Break, % 27
6.8 to 34
Poisson's Ratio 0.32
0.29 to 0.3
Shear Modulus, GPa 41
70 to 72
Tensile Strength: Ultimate (UTS), MPa 270
430 to 500
Tensile Strength: Yield (Proof), MPa 230
190 to 240

Thermal Properties

Latent Heat of Fusion, J/g 420
280 to 350
Melting Completion (Liquidus), °C 1660
1340 to 1400
Melting Onset (Solidus), °C 1610
1300 to 1360
Specific Heat Capacity, J/kg-K 540
470 to 490
Thermal Expansion, µm/m-K 8.7
13 to 14

Otherwise Unclassified Properties

Base Metal Price, % relative 37
16 to 25
Density, g/cm3 4.5
7.7 to 8.0
Embodied Carbon, kg CO2/kg material 33
3.5 to 4.9
Embodied Energy, MJ/kg 530
48 to 68
Embodied Water, L/kg 320
91 to 120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 70
24 to 140
Resilience: Unit (Modulus of Resilience), kJ/m3 240
98 to 160
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
24 to 25
Strength to Weight: Axial, points 17
15 to 18
Strength to Weight: Bending, points 21
16 to 18
Thermal Shock Resistance, points 21
12 to 15