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Grade 24 Titanium vs. S31100 Stainless Steel

Grade 24 titanium belongs to the titanium alloys classification, while S31100 stainless steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is grade 24 titanium and the bottom bar is S31100 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 11
4.5
Fatigue Strength, MPa 550
330
Poisson's Ratio 0.32
0.27
Shear Modulus, GPa 40
79
Shear Strength, MPa 610
580
Tensile Strength: Ultimate (UTS), MPa 1010
1000
Tensile Strength: Yield (Proof), MPa 940
710

Thermal Properties

Latent Heat of Fusion, J/g 410
300
Maximum Temperature: Mechanical, °C 340
1100
Melting Completion (Liquidus), °C 1610
1420
Melting Onset (Solidus), °C 1560
1380
Specific Heat Capacity, J/kg-K 560
480
Thermal Conductivity, W/m-K 7.1
16
Thermal Expansion, µm/m-K 9.6
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.0
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
2.4

Otherwise Unclassified Properties

Density, g/cm3 4.5
7.7
Embodied Carbon, kg CO2/kg material 43
3.1
Embodied Energy, MJ/kg 710
44
Embodied Water, L/kg 310
170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
40
Resilience: Unit (Modulus of Resilience), kJ/m3 4160
1240
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 63
36
Strength to Weight: Bending, points 50
29
Thermal Diffusivity, mm2/s 2.9
4.2
Thermal Shock Resistance, points 72
28

Alloy Composition


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Aluminum (Al), % 5.5 to 6.8
0
Carbon (C), % 0 to 0.080
0 to 0.060
Chromium (Cr), % 0
25 to 27
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.4
63.6 to 69
Manganese (Mn), % 0
0 to 1.0
Nickel (Ni), % 0
6.0 to 7.0
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 0.045
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 87.5 to 91
0 to 0.25
Vanadium (V), % 3.5 to 4.5
0
Residuals, % 0 to 0.4
0