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Grade 33 Titanium vs. S35115 Stainless Steel

Grade 33 titanium belongs to the titanium alloys classification, while S35115 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 33 titanium and the bottom bar is S35115 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 23
46
Fatigue Strength, MPa 250
280
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 41
79
Shear Strength, MPa 240
470
Tensile Strength: Ultimate (UTS), MPa 390
670
Tensile Strength: Yield (Proof), MPa 350
310

Thermal Properties

Latent Heat of Fusion, J/g 420
310
Maximum Temperature: Mechanical, °C 320
1100
Melting Completion (Liquidus), °C 1660
1420
Melting Onset (Solidus), °C 1610
1370
Specific Heat Capacity, J/kg-K 540
480
Thermal Conductivity, W/m-K 21
15
Thermal Expansion, µm/m-K 8.7
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.4
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 6.9
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 55
26
Density, g/cm3 4.5
7.9
Embodied Carbon, kg CO2/kg material 33
4.8
Embodied Energy, MJ/kg 530
67
Embodied Water, L/kg 200
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 86
250
Resilience: Unit (Modulus of Resilience), kJ/m3 590
240
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 24
24
Strength to Weight: Bending, points 26
22
Thermal Diffusivity, mm2/s 8.7
3.9
Thermal Shock Resistance, points 30
15

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.030
Chromium (Cr), % 0.1 to 0.2
23 to 25
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.3
47.6 to 55.8
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
1.5 to 2.5
Nickel (Ni), % 0.35 to 0.55
19 to 22
Nitrogen (N), % 0 to 0.030
0.2 to 0.3
Oxygen (O), % 0 to 0.25
0
Palladium (Pd), % 0.010 to 0.020
0
Phosphorus (P), % 0
0 to 0.045
Ruthenium (Ru), % 0.020 to 0.040
0
Silicon (Si), % 0
0.5 to 1.5
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 98.1 to 99.52
0
Residuals, % 0 to 0.4
0