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Grade 36 Titanium vs. S31727 Stainless Steel

Grade 36 titanium belongs to the titanium alloys classification, while S31727 stainless steel belongs to the iron alloys. There are 25 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 36 titanium and the bottom bar is S31727 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 11
40
Fatigue Strength, MPa 300
240
Poisson's Ratio 0.36
0.28
Shear Modulus, GPa 39
78
Shear Strength, MPa 320
430
Tensile Strength: Ultimate (UTS), MPa 530
630
Tensile Strength: Yield (Proof), MPa 520
270

Thermal Properties

Latent Heat of Fusion, J/g 370
290
Maximum Temperature: Mechanical, °C 320
1010
Melting Completion (Liquidus), °C 2020
1440
Melting Onset (Solidus), °C 1950
1390
Specific Heat Capacity, J/kg-K 420
470
Thermal Expansion, µm/m-K 8.1
16

Otherwise Unclassified Properties

Density, g/cm3 6.3
8.0
Embodied Carbon, kg CO2/kg material 58
4.7
Embodied Energy, MJ/kg 920
64
Embodied Water, L/kg 130
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 59
200
Resilience: Unit (Modulus of Resilience), kJ/m3 1260
190
Stiffness to Weight: Axial, points 9.3
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 23
22
Strength to Weight: Bending, points 23
20
Thermal Shock Resistance, points 45
14

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 0
17.5 to 19
Copper (Cu), % 0
2.8 to 4.0
Hydrogen (H), % 0 to 0.0035
0
Iron (Fe), % 0 to 0.030
53.7 to 61.3
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
3.8 to 4.5
Nickel (Ni), % 0
14.5 to 16.5
Niobium (Nb), % 42 to 47
0
Nitrogen (N), % 0 to 0.030
0.15 to 0.21
Oxygen (O), % 0 to 0.16
0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 52.3 to 58
0
Residuals, % 0 to 0.4
0