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Grade 36 Titanium vs. S31803 Stainless Steel

Grade 36 titanium belongs to the titanium alloys classification, while S31803 stainless steel belongs to the iron alloys. There are 25 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is grade 36 titanium and the bottom bar is S31803 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 11
29
Fatigue Strength, MPa 300
370
Poisson's Ratio 0.36
0.27
Shear Modulus, GPa 39
80
Shear Strength, MPa 320
460
Tensile Strength: Ultimate (UTS), MPa 530
710
Tensile Strength: Yield (Proof), MPa 520
500

Thermal Properties

Latent Heat of Fusion, J/g 370
300
Maximum Temperature: Mechanical, °C 320
1060
Melting Completion (Liquidus), °C 2020
1450
Melting Onset (Solidus), °C 1950
1400
Specific Heat Capacity, J/kg-K 420
480
Thermal Expansion, µm/m-K 8.1
13

Otherwise Unclassified Properties

Density, g/cm3 6.3
7.8
Embodied Carbon, kg CO2/kg material 58
3.6
Embodied Energy, MJ/kg 920
49
Embodied Water, L/kg 130
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 59
180
Resilience: Unit (Modulus of Resilience), kJ/m3 1260
630
Stiffness to Weight: Axial, points 9.3
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 23
25
Strength to Weight: Bending, points 23
23
Thermal Shock Resistance, points 45
20

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 0
21 to 23
Hydrogen (H), % 0 to 0.0035
0
Iron (Fe), % 0 to 0.030
63.7 to 71.9
Manganese (Mn), % 0
0 to 2.0
Molybdenum (Mo), % 0
2.5 to 3.5
Nickel (Ni), % 0
4.5 to 6.5
Niobium (Nb), % 42 to 47
0
Nitrogen (N), % 0 to 0.030
0.080 to 0.2
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 0.020
Titanium (Ti), % 52.3 to 58
0
Residuals, % 0 to 0.4
0