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Grade 24 Titanium vs. AISI 440B Stainless Steel

Grade 24 titanium belongs to the titanium alloys classification, while AISI 440B stainless steel belongs to the iron alloys. There are 28 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is grade 24 titanium and the bottom bar is AISI 440B stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 11
3.0 to 18
Fatigue Strength, MPa 550
260 to 850
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 40
77
Shear Strength, MPa 610
460 to 1110
Tensile Strength: Ultimate (UTS), MPa 1010
740 to 1930
Tensile Strength: Yield (Proof), MPa 940
430 to 1860

Thermal Properties

Latent Heat of Fusion, J/g 410
280
Maximum Temperature: Mechanical, °C 340
870
Melting Completion (Liquidus), °C 1610
1480
Melting Onset (Solidus), °C 1560
1370
Specific Heat Capacity, J/kg-K 560
480
Thermal Conductivity, W/m-K 7.1
23
Thermal Expansion, µm/m-K 9.6
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.0
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
2.9

Otherwise Unclassified Properties

Density, g/cm3 4.5
7.7
Embodied Carbon, kg CO2/kg material 43
2.2
Embodied Energy, MJ/kg 710
31
Embodied Water, L/kg 310
120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
57 to 110
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 63
27 to 70
Strength to Weight: Bending, points 50
24 to 45
Thermal Diffusivity, mm2/s 2.9
6.1
Thermal Shock Resistance, points 72
27 to 70

Alloy Composition

Aluminum (Al), % 5.5 to 6.8
0
Carbon (C), % 0 to 0.080
0.75 to 1.0
Chromium (Cr), % 0
16 to 18
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.4
78.2 to 83.3
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
0 to 0.75
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
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 87.5 to 91
0
Vanadium (V), % 3.5 to 4.5
0
Residuals, % 0 to 0.4
0