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Titanium 6-7 vs. SAE-AISI 4142 Steel

Titanium 6-7 belongs to the titanium alloys classification, while SAE-AISI 4142 steel belongs to the iron alloys. There are 26 material properties with values for both materials. Properties with values for just one material (6, 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 4142 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
190
Elongation at Break, % 11
20
Fatigue Strength, MPa 530
250
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 45
73
Shear Strength, MPa 610
370
Tensile Strength: Ultimate (UTS), MPa 1020
590
Tensile Strength: Yield (Proof), MPa 900
370

Thermal Properties

Latent Heat of Fusion, J/g 410
250
Maximum Temperature: Mechanical, °C 300
420
Melting Completion (Liquidus), °C 1700
1460
Melting Onset (Solidus), °C 1650
1420
Specific Heat Capacity, J/kg-K 520
470
Thermal Expansion, µm/m-K 9.3
12

Otherwise Unclassified Properties

Base Metal Price, % relative 75
2.4
Density, g/cm3 5.1
7.8
Embodied Carbon, kg CO2/kg material 34
1.5
Embodied Energy, MJ/kg 540
20
Embodied Water, L/kg 190
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
100
Resilience: Unit (Modulus of Resilience), kJ/m3 3460
360
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 32
24
Strength to Weight: Axial, points 56
21
Strength to Weight: Bending, points 44
20
Thermal Shock Resistance, points 66
19

Alloy Composition

Aluminum (Al), % 5.5 to 6.5
0
Carbon (C), % 0 to 0.080
0.4 to 0.45
Chromium (Cr), % 0
0.8 to 1.1
Hydrogen (H), % 0 to 0.0090
0
Iron (Fe), % 0 to 0.25
96.8 to 97.8
Manganese (Mn), % 0
0.75 to 1.0
Molybdenum (Mo), % 6.5 to 7.5
0.15 to 0.25
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 0.035
Silicon (Si), % 0
0.15 to 0.35
Sulfur (S), % 0
0 to 0.040
Tantalum (Ta), % 0 to 0.5
0
Titanium (Ti), % 84.9 to 88
0