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ASTM A302 Alloy Steel vs. Titanium 6-6-2

ASTM A302 alloy steel belongs to the iron alloys classification, while titanium 6-6-2 belongs to the titanium alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is ASTM A302 alloy steel and the bottom bar is titanium 6-6-2.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
120
Elongation at Break, % 20 to 23
6.7 to 9.0
Fatigue Strength, MPa 250 to 280
590 to 670
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 73
44
Shear Strength, MPa 370 to 390
670 to 800
Tensile Strength: Ultimate (UTS), MPa 590 to 620
1140 to 1370
Tensile Strength: Yield (Proof), MPa 350 to 390
1040 to 1230

Thermal Properties

Latent Heat of Fusion, J/g 250
400
Maximum Temperature: Mechanical, °C 410
310
Melting Completion (Liquidus), °C 1460
1610
Melting Onset (Solidus), °C 1420
1560
Specific Heat Capacity, J/kg-K 470
540
Thermal Conductivity, W/m-K 39 to 51
5.5
Thermal Expansion, µm/m-K 13
9.4

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2 to 7.4
1.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2 to 8.4
2.1

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4 to 3.0
40
Density, g/cm3 7.8 to 7.9
4.8
Embodied Carbon, kg CO2/kg material 1.5 to 1.6
29
Embodied Energy, MJ/kg 20 to 21
470
Embodied Water, L/kg 48 to 50
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 120
89 to 99
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
34
Strength to Weight: Axial, points 21 to 22
66 to 79
Strength to Weight: Bending, points 20 to 21
50 to 57
Thermal Diffusivity, mm2/s 10 to 14
2.1
Thermal Shock Resistance, points 17 to 18
75 to 90