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Grade 28 Titanium vs. ASTM A148 Cast Steel

Grade 28 titanium belongs to the titanium alloys classification, while ASTM A148 cast steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is grade 28 titanium and the bottom bar is ASTM A148 cast steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 11 to 17
5.7 to 25
Fatigue Strength, MPa 330 to 480
280 to 670
Poisson's Ratio 0.32
0.29
Reduction in Area, % 22
13 to 45
Shear Modulus, GPa 40
73
Tensile Strength: Ultimate (UTS), MPa 690 to 980
630 to 1300
Tensile Strength: Yield (Proof), MPa 540 to 810
390 to 1160

Thermal Properties

Latent Heat of Fusion, J/g 410
250
Maximum Temperature: Mechanical, °C 330
400 to 430
Melting Completion (Liquidus), °C 1640
1460
Melting Onset (Solidus), °C 1590
1420
Specific Heat Capacity, J/kg-K 550
470
Thermal Conductivity, W/m-K 8.3
37 to 47
Thermal Expansion, µm/m-K 9.9
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.3
7.3 to 7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
8.3 to 8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 36
2.3 to 3.3
Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 37
1.5 to 1.7
Embodied Energy, MJ/kg 600
20 to 22
Embodied Water, L/kg 370
48 to 53

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 87 to 110
71 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 1370 to 3100
400 to 3570
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 43 to 61
22 to 46
Strength to Weight: Bending, points 39 to 49
21 to 34
Thermal Diffusivity, mm2/s 3.4
9.9 to 13
Thermal Shock Resistance, points 47 to 66
18 to 38

Comparable Variants