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Grade 24 Titanium vs. SAE-AISI 9255 Steel

Grade 24 titanium belongs to the titanium alloys classification, while SAE-AISI 9255 steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, 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 9255 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 11
21
Fatigue Strength, MPa 550
270
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 40
72
Shear Strength, MPa 610
430
Tensile Strength: Ultimate (UTS), MPa 1010
680
Tensile Strength: Yield (Proof), MPa 940
390

Thermal Properties

Latent Heat of Fusion, J/g 410
280
Maximum Temperature: Mechanical, °C 340
400
Melting Completion (Liquidus), °C 1610
1430
Melting Onset (Solidus), °C 1560
1390
Specific Heat Capacity, J/kg-K 560
480
Thermal Conductivity, W/m-K 7.1
46
Thermal Expansion, µm/m-K 9.6
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.0
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
8.6

Otherwise Unclassified Properties

Density, g/cm3 4.5
7.7
Embodied Carbon, kg CO2/kg material 43
1.5
Embodied Energy, MJ/kg 710
20
Embodied Water, L/kg 310
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
120
Resilience: Unit (Modulus of Resilience), kJ/m3 4160
400
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 63
24
Strength to Weight: Bending, points 50
22
Thermal Diffusivity, mm2/s 2.9
13
Thermal Shock Resistance, points 72
21

Alloy Composition


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Aluminum (Al), % 5.5 to 6.8
0
Carbon (C), % 0 to 0.080
0.51 to 0.59
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.4
96.2 to 97
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 0.035
Silicon (Si), % 0
1.8 to 2.2
Sulfur (S), % 0
0 to 0.040
Titanium (Ti), % 87.5 to 91
0
Vanadium (V), % 3.5 to 4.5
0
Residuals, % 0 to 0.4
0