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Grade 31 Titanium vs. ASTM A732 Cast Steel

Grade 31 titanium belongs to the titanium alloys classification, while ASTM A732 cast steel belongs to the iron alloys. There are 28 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is grade 31 titanium and the bottom bar is ASTM A732 cast steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 20
4.0 to 25
Fatigue Strength, MPa 300
230 to 750
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 41
72 to 73
Tensile Strength: Ultimate (UTS), MPa 510
460 to 1470
Tensile Strength: Yield (Proof), MPa 450
310 to 1340

Thermal Properties

Latent Heat of Fusion, J/g 420
250 to 260
Maximum Temperature: Mechanical, °C 320
400 to 430
Melting Completion (Liquidus), °C 1660
1440 to 1460
Melting Onset (Solidus), °C 1610
1400 to 1420
Specific Heat Capacity, J/kg-K 540
470 to 480
Thermal Conductivity, W/m-K 21
39 to 50
Thermal Expansion, µm/m-K 8.7
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.4
7.1 to 7.7
Electrical Conductivity: Equal Weight (Specific), % IACS 6.9
8.2 to 8.9

Otherwise Unclassified Properties

Density, g/cm3 4.5
7.8 to 7.9
Embodied Carbon, kg CO2/kg material 36
1.4 to 1.7
Embodied Energy, MJ/kg 600
19 to 24
Embodied Water, L/kg 230
47 to 54

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 99
45 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 940
260 to 4770
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 32
16 to 52
Strength to Weight: Bending, points 32
17 to 37
Thermal Diffusivity, mm2/s 8.5
10 to 14
Thermal Shock Resistance, points 39
14 to 43