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Grade 33 Titanium vs. S15500 Stainless Steel

Grade 33 titanium belongs to the titanium alloys classification, while S15500 stainless steel belongs to the iron alloys. There are 31 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 S15500 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 23
6.8 to 16
Fatigue Strength, MPa 250
350 to 650
Poisson's Ratio 0.32
0.28
Reduction in Area, % 34
17 to 40
Shear Modulus, GPa 41
75
Shear Strength, MPa 240
540 to 870
Tensile Strength: Ultimate (UTS), MPa 390
890 to 1490
Tensile Strength: Yield (Proof), MPa 350
590 to 1310

Thermal Properties

Latent Heat of Fusion, J/g 420
280
Maximum Temperature: Mechanical, °C 320
820
Melting Completion (Liquidus), °C 1660
1430
Melting Onset (Solidus), °C 1610
1380
Specific Heat Capacity, J/kg-K 540
480
Thermal Conductivity, W/m-K 21
17
Thermal Expansion, µm/m-K 8.7
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.4
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 6.9
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 55
13
Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 33
2.7
Embodied Energy, MJ/kg 530
39
Embodied Water, L/kg 200
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 86
98 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 590
890 to 4460
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 24
32 to 53
Strength to Weight: Bending, points 26
26 to 37
Thermal Diffusivity, mm2/s 8.7
4.6
Thermal Shock Resistance, points 30
30 to 50

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.070
Chromium (Cr), % 0.1 to 0.2
14 to 15.5
Copper (Cu), % 0
2.5 to 4.5
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.3
71.9 to 79.9
Manganese (Mn), % 0
0 to 1.0
Nickel (Ni), % 0.35 to 0.55
3.5 to 5.5
Niobium (Nb), % 0
0.15 to 0.45
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.25
0
Palladium (Pd), % 0.010 to 0.020
0
Phosphorus (P), % 0
0 to 0.040
Ruthenium (Ru), % 0.020 to 0.040
0
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 98.1 to 99.52
0
Residuals, % 0 to 0.4
0