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Grade C-3 Titanium vs. ASTM A302 Alloy Steel

Grade C-3 titanium belongs to the titanium alloys classification, while ASTM A302 alloy 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 C-3 titanium and the bottom bar is ASTM A302 alloy steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
180 to 190
Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 13
20 to 23
Fatigue Strength, MPa 260
250 to 280
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 40
73
Tensile Strength: Ultimate (UTS), MPa 500
590 to 620
Tensile Strength: Yield (Proof), MPa 430
350 to 390

Thermal Properties

Latent Heat of Fusion, J/g 420
250
Maximum Temperature: Mechanical, °C 320
410
Melting Completion (Liquidus), °C 1660
1460
Melting Onset (Solidus), °C 1610
1420
Specific Heat Capacity, J/kg-K 540
470
Thermal Conductivity, W/m-K 21
39 to 51
Thermal Expansion, µm/m-K 8.7
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.5
7.2 to 7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 6.9
8.2 to 8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 37
2.4 to 3.0
Density, g/cm3 4.5
7.8 to 7.9
Embodied Carbon, kg CO2/kg material 31
1.5 to 1.6
Embodied Energy, MJ/kg 510
20 to 21
Embodied Water, L/kg 110
48 to 50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 65
110 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 880
330 to 410
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 31
21 to 22
Strength to Weight: Bending, points 31
20 to 21
Thermal Diffusivity, mm2/s 8.5
10 to 14
Thermal Shock Resistance, points 39
17 to 18