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Grade 37 Titanium vs. S20432 Stainless Steel

Grade 37 titanium belongs to the titanium alloys classification, while S20432 stainless steel belongs to the iron alloys. There are 30 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 37 titanium and the bottom bar is S20432 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 22
45
Fatigue Strength, MPa 170
210
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 40
76
Shear Strength, MPa 240
400
Tensile Strength: Ultimate (UTS), MPa 390
580
Tensile Strength: Yield (Proof), MPa 250
230

Thermal Properties

Latent Heat of Fusion, J/g 420
280
Maximum Temperature: Mechanical, °C 310
900
Melting Completion (Liquidus), °C 1650
1410
Melting Onset (Solidus), °C 1600
1370
Specific Heat Capacity, J/kg-K 550
480
Thermal Conductivity, W/m-K 21
15
Thermal Expansion, µm/m-K 8.9
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.4
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 6.8
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 36
13
Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 31
2.7
Embodied Energy, MJ/kg 500
38
Embodied Water, L/kg 120
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 76
210
Resilience: Unit (Modulus of Resilience), kJ/m3 280
140
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 24
21
Strength to Weight: Bending, points 26
20
Thermal Diffusivity, mm2/s 8.4
4.0
Thermal Shock Resistance, points 29
13

Alloy Composition

Aluminum (Al), % 1.0 to 2.0
0
Carbon (C), % 0 to 0.080
0 to 0.080
Chromium (Cr), % 0
17 to 18
Copper (Cu), % 0
2.0 to 3.0
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.3
66.7 to 74
Manganese (Mn), % 0
3.0 to 5.0
Nickel (Ni), % 0
4.0 to 6.0
Nitrogen (N), % 0 to 0.030
0.050 to 0.2
Oxygen (O), % 0 to 0.25
0
Phosphorus (P), % 0
0 to 0.045
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