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Grade 24 Titanium vs. SAE-AISI 1144 Steel

Grade 24 titanium belongs to the titanium alloys classification, while SAE-AISI 1144 steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is grade 24 titanium and the bottom bar is SAE-AISI 1144 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 11
11 to 17
Fatigue Strength, MPa 550
280 to 430
Poisson's Ratio 0.32
0.29
Reduction in Area, % 28
34 to 40
Shear Modulus, GPa 40
72
Shear Strength, MPa 610
460 to 510
Tensile Strength: Ultimate (UTS), MPa 1010
750 to 840
Tensile Strength: Yield (Proof), MPa 940
420 to 690

Thermal Properties

Latent Heat of Fusion, J/g 410
250
Maximum Temperature: Mechanical, °C 340
400
Melting Completion (Liquidus), °C 1610
1450
Melting Onset (Solidus), °C 1560
1410
Specific Heat Capacity, J/kg-K 560
470
Thermal Conductivity, W/m-K 7.1
51
Thermal Expansion, µm/m-K 9.6
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.0
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
8.2

Otherwise Unclassified Properties

Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 43
1.4
Embodied Energy, MJ/kg 710
19
Embodied Water, L/kg 310
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
91 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 4160
480 to 1290
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 63
27 to 30
Strength to Weight: Bending, points 50
23 to 25
Thermal Diffusivity, mm2/s 2.9
14
Thermal Shock Resistance, points 72
22 to 24

Alloy Composition


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Aluminum (Al), % 5.5 to 6.8
0
Carbon (C), % 0 to 0.080
0.4 to 0.48
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.4
97.5 to 98
Manganese (Mn), % 0
1.4 to 1.7
Nitrogen (N), % 0 to 0.050
0
Oxygen (O), % 0 to 0.2
0
Palladium (Pd), % 0.040 to 0.080
0
Phosphorus (P), % 0
0 to 0.040
Sulfur (S), % 0
0.24 to 0.33
Titanium (Ti), % 87.5 to 91
0
Vanadium (V), % 3.5 to 4.5
0
Residuals, % 0 to 0.4
0