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Grade 27 Titanium vs. ASTM A216 Cast Steel

Grade 27 titanium belongs to the titanium alloys classification, while ASTM A216 cast steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is grade 27 titanium and the bottom bar is ASTM A216 cast steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 27
25 to 27
Fatigue Strength, MPa 170
170 to 230
Poisson's Ratio 0.32
0.29
Reduction in Area, % 34
39
Shear Modulus, GPa 41
72
Tensile Strength: Ultimate (UTS), MPa 270
500 to 570
Tensile Strength: Yield (Proof), MPa 230
230 to 310

Thermal Properties

Latent Heat of Fusion, J/g 420
250
Maximum Temperature: Mechanical, °C 320
400
Melting Completion (Liquidus), °C 1660
1450 to 1460
Melting Onset (Solidus), °C 1610
1410
Specific Heat Capacity, J/kg-K 540
470
Thermal Conductivity, W/m-K 21
49 to 52
Thermal Expansion, µm/m-K 8.7
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
7.1 to 7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
8.2 to 8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 37
1.8
Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 33
1.4
Embodied Energy, MJ/kg 530
18
Embodied Water, L/kg 320
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 70
110 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 240
140 to 250
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 17
18 to 20
Strength to Weight: Bending, points 21
18 to 20
Thermal Diffusivity, mm2/s 8.8
13 to 14
Thermal Shock Resistance, points 21
16 to 18