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Grade 24 Titanium vs. S30815 Stainless Steel

Grade 24 titanium belongs to the titanium alloys classification, while S30815 stainless steel belongs to the iron alloys. There are 30 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 S30815 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 11
45
Fatigue Strength, MPa 550
320
Poisson's Ratio 0.32
0.28
Reduction in Area, % 28
56
Shear Modulus, GPa 40
77
Shear Strength, MPa 610
480
Tensile Strength: Ultimate (UTS), MPa 1010
680
Tensile Strength: Yield (Proof), MPa 940
350

Thermal Properties

Latent Heat of Fusion, J/g 410
310
Maximum Temperature: Mechanical, °C 340
1020
Melting Completion (Liquidus), °C 1610
1400
Melting Onset (Solidus), °C 1560
1360
Specific Heat Capacity, J/kg-K 560
490
Thermal Conductivity, W/m-K 7.1
15
Thermal Expansion, µm/m-K 9.6
17

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
3.3
Embodied Energy, MJ/kg 710
47
Embodied Water, L/kg 310
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
260
Resilience: Unit (Modulus of Resilience), kJ/m3 4160
310
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 63
25
Strength to Weight: Bending, points 50
22
Thermal Diffusivity, mm2/s 2.9
4.0
Thermal Shock Resistance, points 72
15

Alloy Composition

Aluminum (Al), % 5.5 to 6.8
0
Carbon (C), % 0 to 0.080
0.050 to 0.1
Cerium (Ce), % 0
0.030 to 0.080
Chromium (Cr), % 0
20 to 22
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.4
62.8 to 68.4
Manganese (Mn), % 0
0 to 0.8
Nickel (Ni), % 0
10 to 12
Nitrogen (N), % 0 to 0.050
0.14 to 0.2
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
1.4 to 2.0
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