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Titanium 6-7 vs. SAE-AISI A9 Steel

Titanium 6-7 belongs to the titanium alloys classification, while SAE-AISI A9 steel belongs to the iron alloys. There are 19 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is titanium 6-7 and the bottom bar is SAE-AISI A9 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
190
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 45
74
Tensile Strength: Ultimate (UTS), MPa 1020
770 to 2030

Thermal Properties

Latent Heat of Fusion, J/g 410
280
Melting Completion (Liquidus), °C 1700
1460
Melting Onset (Solidus), °C 1650
1410
Specific Heat Capacity, J/kg-K 520
470
Thermal Expansion, µm/m-K 9.3
12

Otherwise Unclassified Properties

Base Metal Price, % relative 75
7.0
Density, g/cm3 5.1
7.8
Embodied Carbon, kg CO2/kg material 34
4.7
Embodied Energy, MJ/kg 540
70
Embodied Water, L/kg 190
82

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 32
25
Strength to Weight: Axial, points 56
28 to 73
Strength to Weight: Bending, points 44
24 to 46
Thermal Shock Resistance, points 66
25 to 66

Alloy Composition

Aluminum (Al), % 5.5 to 6.5
0
Carbon (C), % 0 to 0.080
0.45 to 0.55
Chromium (Cr), % 0
4.8 to 5.5
Copper (Cu), % 0
0 to 0.25
Hydrogen (H), % 0 to 0.0090
0
Iron (Fe), % 0 to 0.25
87 to 90.5
Manganese (Mn), % 0
0 to 0.5
Molybdenum (Mo), % 6.5 to 7.5
1.3 to 1.8
Nickel (Ni), % 0
1.3 to 1.8
Niobium (Nb), % 6.5 to 7.5
0
Nitrogen (N), % 0 to 0.050
0
Oxygen (O), % 0 to 0.2
0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
1.0 to 1.2
Sulfur (S), % 0
0 to 0.030
Tantalum (Ta), % 0 to 0.5
0
Titanium (Ti), % 84.9 to 88
0
Vanadium (V), % 0
0.8 to 1.4