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Grade 24 Titanium vs. S21800 Stainless Steel

Grade 24 titanium belongs to the titanium alloys classification, while S21800 stainless steel belongs to the iron alloys. There are 26 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is grade 24 titanium and the bottom bar is S21800 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 11
40
Fatigue Strength, MPa 550
330
Poisson's Ratio 0.32
0.28
Reduction in Area, % 28
62
Shear Modulus, GPa 40
75
Shear Strength, MPa 610
510
Tensile Strength: Ultimate (UTS), MPa 1010
740
Tensile Strength: Yield (Proof), MPa 940
390

Thermal Properties

Latent Heat of Fusion, J/g 410
340
Maximum Temperature: Mechanical, °C 340
900
Melting Completion (Liquidus), °C 1610
1360
Melting Onset (Solidus), °C 1560
1310
Specific Heat Capacity, J/kg-K 560
500
Thermal Expansion, µm/m-K 9.6
16

Otherwise Unclassified Properties

Density, g/cm3 4.5
7.5
Embodied Carbon, kg CO2/kg material 43
3.1
Embodied Energy, MJ/kg 710
45
Embodied Water, L/kg 310
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
250
Resilience: Unit (Modulus of Resilience), kJ/m3 4160
390
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
26
Strength to Weight: Axial, points 63
27
Strength to Weight: Bending, points 50
24
Thermal Shock Resistance, points 72
17

Alloy Composition

Aluminum (Al), % 5.5 to 6.8
0
Carbon (C), % 0 to 0.080
0 to 0.1
Chromium (Cr), % 0
16 to 18
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.4
59.1 to 65.4
Manganese (Mn), % 0
7.0 to 9.0
Nickel (Ni), % 0
8.0 to 9.0
Nitrogen (N), % 0 to 0.050
0.080 to 0.18
Oxygen (O), % 0 to 0.2
0
Palladium (Pd), % 0.040 to 0.080
0
Phosphorus (P), % 0
0 to 0.060
Silicon (Si), % 0
3.5 to 4.5
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 87.5 to 91
0
Vanadium (V), % 3.5 to 4.5
0
Residuals, % 0 to 0.4
0