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Grade 24 Titanium vs. SAE-AISI 1151 Steel

Grade 24 titanium belongs to the titanium alloys classification, while SAE-AISI 1151 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 1151 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
260 to 410
Poisson's Ratio 0.32
0.29
Reduction in Area, % 28
34 to 40
Shear Modulus, GPa 40
72
Shear Strength, MPa 610
430 to 480
Tensile Strength: Ultimate (UTS), MPa 1010
710 to 800
Tensile Strength: Yield (Proof), MPa 940
390 to 660

Thermal Properties

Latent Heat of Fusion, J/g 410
250
Maximum Temperature: Mechanical, °C 340
400
Melting Completion (Liquidus), °C 1610
1460
Melting Onset (Solidus), °C 1560
1420
Specific Heat Capacity, J/kg-K 560
470
Thermal Conductivity, W/m-K 7.1
51
Thermal Expansion, µm/m-K 9.6
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.0
10
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
12

Otherwise Unclassified Properties

Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 43
1.4
Embodied Energy, MJ/kg 710
18
Embodied Water, L/kg 310
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
86 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 4160
400 to 1170
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 63
25 to 28
Strength to Weight: Bending, points 50
22 to 24
Thermal Diffusivity, mm2/s 2.9
14
Thermal Shock Resistance, points 72
22 to 25

Alloy Composition


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Aluminum (Al), % 5.5 to 6.8
0
Carbon (C), % 0 to 0.080
0.48 to 0.55
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.4
98.3 to 98.7
Manganese (Mn), % 0
0.7 to 1.0
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
0.080 to 0.13
Titanium (Ti), % 87.5 to 91
0
Vanadium (V), % 3.5 to 4.5
0
Residuals, % 0 to 0.4
0