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Grade 37 Titanium vs. S32550 Stainless Steel

Grade 37 titanium belongs to the titanium alloys classification, while S32550 stainless steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is grade 37 titanium and the bottom bar is S32550 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 22
21
Fatigue Strength, MPa 170
400
Poisson's Ratio 0.32
0.27
Reduction in Area, % 34
57
Shear Modulus, GPa 40
80
Shear Strength, MPa 240
540
Tensile Strength: Ultimate (UTS), MPa 390
860
Tensile Strength: Yield (Proof), MPa 250
620

Thermal Properties

Latent Heat of Fusion, J/g 420
300
Maximum Temperature: Mechanical, °C 310
1100
Melting Completion (Liquidus), °C 1650
1440
Melting Onset (Solidus), °C 1600
1390
Specific Heat Capacity, J/kg-K 550
480
Thermal Conductivity, W/m-K 21
16
Thermal Expansion, µm/m-K 8.9
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.4
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 6.8
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 36
20
Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 31
3.8
Embodied Energy, MJ/kg 500
53
Embodied Water, L/kg 120
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 76
160
Resilience: Unit (Modulus of Resilience), kJ/m3 280
940
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 24
31
Strength to Weight: Bending, points 26
26
Thermal Diffusivity, mm2/s 8.4
4.4
Thermal Shock Resistance, points 29
23

Alloy Composition

Aluminum (Al), % 1.0 to 2.0
0
Carbon (C), % 0 to 0.080
0 to 0.040
Chromium (Cr), % 0
24 to 27
Copper (Cu), % 0
1.5 to 2.5
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.3
57.2 to 67
Manganese (Mn), % 0
0 to 1.5
Molybdenum (Mo), % 0
2.9 to 3.9
Nickel (Ni), % 0
4.5 to 6.5
Nitrogen (N), % 0 to 0.030
0.1 to 0.25
Oxygen (O), % 0 to 0.25
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 96.9 to 99
0
Residuals, % 0 to 0.4
0