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Grade 37 Titanium vs. S82012 Stainless Steel

Grade 37 titanium belongs to the titanium alloys classification, while S82012 stainless steel belongs to the iron alloys. There are 30 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 S82012 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 22
40
Fatigue Strength, MPa 170
480
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 40
78
Shear Strength, MPa 240
550
Tensile Strength: Ultimate (UTS), MPa 390
800
Tensile Strength: Yield (Proof), MPa 250
560

Thermal Properties

Latent Heat of Fusion, J/g 420
280
Maximum Temperature: Mechanical, °C 310
950
Melting Completion (Liquidus), °C 1650
1430
Melting Onset (Solidus), °C 1600
1380
Specific Heat Capacity, J/kg-K 550
480
Thermal Conductivity, W/m-K 21
15
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
11
Density, g/cm3 4.5
7.7
Embodied Carbon, kg CO2/kg material 31
2.4
Embodied Energy, MJ/kg 500
35
Embodied Water, L/kg 120
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 76
290
Resilience: Unit (Modulus of Resilience), kJ/m3 280
790
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 24
29
Strength to Weight: Bending, points 26
25
Thermal Diffusivity, mm2/s 8.4
3.9
Thermal Shock Resistance, points 29
23

Alloy Composition

Aluminum (Al), % 1.0 to 2.0
0
Carbon (C), % 0 to 0.080
0 to 0.050
Chromium (Cr), % 0
19 to 20.5
Copper (Cu), % 0
0 to 1.0
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.3
71.3 to 77.9
Manganese (Mn), % 0
2.0 to 4.0
Molybdenum (Mo), % 0
0.1 to 0.6
Nickel (Ni), % 0
0.8 to 1.5
Nitrogen (N), % 0 to 0.030
0.16 to 0.26
Oxygen (O), % 0 to 0.25
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 0.8
Sulfur (S), % 0
0 to 0.0050
Titanium (Ti), % 96.9 to 99
0
Residuals, % 0 to 0.4
0