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Grade 25 Titanium vs. S35315 Stainless Steel

Grade 25 titanium belongs to the titanium alloys classification, while S35315 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 25 titanium and the bottom bar is S35315 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 11
46
Fatigue Strength, MPa 550
280
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 40
78
Shear Strength, MPa 600
520
Tensile Strength: Ultimate (UTS), MPa 1000
740
Tensile Strength: Yield (Proof), MPa 940
300

Thermal Properties

Latent Heat of Fusion, J/g 410
330
Maximum Temperature: Mechanical, °C 340
1100
Melting Completion (Liquidus), °C 1610
1370
Melting Onset (Solidus), °C 1560
1330
Specific Heat Capacity, J/kg-K 560
480
Thermal Conductivity, W/m-K 7.1
12
Thermal Expansion, µm/m-K 9.6
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.0
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
2.0

Otherwise Unclassified Properties

Density, g/cm3 4.5
7.9
Embodied Carbon, kg CO2/kg material 43
5.7
Embodied Energy, MJ/kg 700
81
Embodied Water, L/kg 320
220

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
270
Resilience: Unit (Modulus of Resilience), kJ/m3 4220
230
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 62
26
Strength to Weight: Bending, points 50
23
Thermal Diffusivity, mm2/s 2.8
3.1
Thermal Shock Resistance, points 71
17

Alloy Composition

Aluminum (Al), % 5.5 to 6.8
0
Carbon (C), % 0 to 0.080
0.040 to 0.080
Cerium (Ce), % 0
0.030 to 0.1
Chromium (Cr), % 0
24 to 26
Hydrogen (H), % 0 to 0.013
0
Iron (Fe), % 0 to 0.4
33.6 to 40.6
Manganese (Mn), % 0
0 to 2.0
Nickel (Ni), % 0.3 to 0.8
34 to 36
Nitrogen (N), % 0 to 0.050
0.12 to 0.18
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
1.2 to 2.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 86.7 to 90.6
0
Vanadium (V), % 3.5 to 4.5
0
Residuals, % 0 to 0.4
0