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Grade 20 Titanium vs. SAE-AISI 1008 Steel

Grade 20 titanium belongs to the titanium alloys classification, while SAE-AISI 1008 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 grade 20 titanium and the bottom bar is SAE-AISI 1008 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
190
Elongation at Break, % 5.7 to 17
22 to 33
Fatigue Strength, MPa 550 to 630
150 to 220
Poisson's Ratio 0.32
0.29
Reduction in Area, % 23
50 to 63
Shear Modulus, GPa 47
73
Shear Strength, MPa 560 to 740
220 to 230
Tensile Strength: Ultimate (UTS), MPa 900 to 1270
330 to 370
Tensile Strength: Yield (Proof), MPa 850 to 1190
190 to 310

Thermal Properties

Latent Heat of Fusion, J/g 400
250
Maximum Temperature: Mechanical, °C 370
400
Melting Completion (Liquidus), °C 1660
1470
Melting Onset (Solidus), °C 1600
1430
Specific Heat Capacity, J/kg-K 520
470
Thermal Expansion, µm/m-K 9.6
12

Otherwise Unclassified Properties

Density, g/cm3 5.0
7.9
Embodied Carbon, kg CO2/kg material 52
1.4
Embodied Energy, MJ/kg 860
18
Embodied Water, L/kg 350
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 71 to 150
78 to 91
Resilience: Unit (Modulus of Resilience), kJ/m3 2940 to 5760
92 to 260
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 33
24
Strength to Weight: Axial, points 50 to 70
12 to 13
Strength to Weight: Bending, points 41 to 52
13 to 15
Thermal Shock Resistance, points 55 to 77
10 to 12

Alloy Composition

Aluminum (Al), % 3.0 to 4.0
0
Carbon (C), % 0 to 0.050
0 to 0.1
Chromium (Cr), % 5.5 to 6.5
0
Hydrogen (H), % 0 to 0.020
0
Iron (Fe), % 0 to 0.3
99.31 to 99.7
Manganese (Mn), % 0
0.3 to 0.5
Molybdenum (Mo), % 3.5 to 4.5
0
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.12
0
Palladium (Pd), % 0.040 to 0.080
0
Phosphorus (P), % 0
0 to 0.040
Sulfur (S), % 0
0 to 0.050
Titanium (Ti), % 71 to 77
0
Vanadium (V), % 7.5 to 8.5
0
Zirconium (Zr), % 3.5 to 4.5
0
Residuals, % 0 to 0.4
0

Comparable Variants