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ASTM A209 Steel vs. Titanium 6-6-2

ASTM A209 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 (4, in this case) are not shown.

For each property being compared, the top bar is ASTM A209 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, % 34
6.7 to 9.0
Fatigue Strength, MPa 180 to 200
590 to 670
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 73
44
Shear Strength, MPa 280 to 310
670 to 800
Tensile Strength: Ultimate (UTS), MPa 420 to 460
1140 to 1370
Tensile Strength: Yield (Proof), MPa 220 to 250
1040 to 1230

Thermal Properties

Latent Heat of Fusion, J/g 250
400
Maximum Temperature: Mechanical, °C 410
310
Melting Completion (Liquidus), °C 1470
1610
Melting Onset (Solidus), °C 1420 to 1430
1560
Specific Heat Capacity, J/kg-K 470
540
Thermal Conductivity, W/m-K 50
5.5
Thermal Expansion, µm/m-K 13
9.4

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
1.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1 to 8.2
2.1

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
40
Density, g/cm3 7.9
4.8
Embodied Carbon, kg CO2/kg material 1.5
29
Embodied Energy, MJ/kg 20
470
Embodied Water, L/kg 47
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 130
89 to 99
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
34
Strength to Weight: Axial, points 15 to 16
66 to 79
Strength to Weight: Bending, points 16 to 17
50 to 57
Thermal Diffusivity, mm2/s 13
2.1
Thermal Shock Resistance, points 12 to 14
75 to 90