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Grade 6 Titanium vs. ASTM A302 Alloy Steel

Grade 6 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 6 titanium and the bottom bar is ASTM A302 alloy steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
190
Elongation at Break, % 11
20 to 23
Fatigue Strength, MPa 290
250 to 280
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 39
73
Shear Strength, MPa 530
370 to 390
Tensile Strength: Ultimate (UTS), MPa 890
590 to 620
Tensile Strength: Yield (Proof), MPa 840
350 to 390

Thermal Properties

Latent Heat of Fusion, J/g 410
250
Maximum Temperature: Mechanical, °C 310
410
Melting Completion (Liquidus), °C 1580
1460
Melting Onset (Solidus), °C 1530
1420
Specific Heat Capacity, J/kg-K 550
470
Thermal Conductivity, W/m-K 7.8
39 to 51
Thermal Expansion, µm/m-K 9.4
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.2
7.2 to 7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
8.2 to 8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 36
2.4 to 3.0
Density, g/cm3 4.5
7.8 to 7.9
Embodied Carbon, kg CO2/kg material 30
1.5 to 1.6
Embodied Energy, MJ/kg 480
20 to 21
Embodied Water, L/kg 190
48 to 50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 92
110 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 3390
330 to 410
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 55
21 to 22
Strength to Weight: Bending, points 46
20 to 21
Thermal Diffusivity, mm2/s 3.2
10 to 14
Thermal Shock Resistance, points 65
17 to 18