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Grade 37 Titanium vs. S41425 Stainless Steel

Grade 37 titanium belongs to the titanium alloys classification, while S41425 stainless steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is grade 37 titanium and the bottom bar is S41425 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 22
17
Fatigue Strength, MPa 170
450
Poisson's Ratio 0.32
0.28
Reduction in Area, % 34
51
Shear Modulus, GPa 40
77
Shear Strength, MPa 240
570
Tensile Strength: Ultimate (UTS), MPa 390
920
Tensile Strength: Yield (Proof), MPa 250
750

Thermal Properties

Latent Heat of Fusion, J/g 420
280
Maximum Temperature: Mechanical, °C 310
810
Melting Completion (Liquidus), °C 1650
1450
Melting Onset (Solidus), °C 1600
1410
Specific Heat Capacity, J/kg-K 550
470
Thermal Conductivity, W/m-K 21
16
Thermal Expansion, µm/m-K 8.9
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.4
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 6.8
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 36
13
Density, g/cm3 4.5
7.9
Embodied Carbon, kg CO2/kg material 31
2.9
Embodied Energy, MJ/kg 500
40
Embodied Water, L/kg 120
120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 76
150
Resilience: Unit (Modulus of Resilience), kJ/m3 280
1420
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 24
33
Strength to Weight: Bending, points 26
27
Thermal Diffusivity, mm2/s 8.4
4.4
Thermal Shock Resistance, points 29
33

Alloy Composition

Aluminum (Al), % 1.0 to 2.0
0
Carbon (C), % 0 to 0.080
0 to 0.050
Chromium (Cr), % 0
12 to 15
Copper (Cu), % 0
0 to 0.3
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.3
74 to 81.9
Manganese (Mn), % 0
0.5 to 1.0
Molybdenum (Mo), % 0
1.5 to 2.0
Nickel (Ni), % 0
4.0 to 7.0
Nitrogen (N), % 0 to 0.030
0.060 to 0.12
Oxygen (O), % 0 to 0.25
0
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0
0 to 0.5
Sulfur (S), % 0
0 to 0.0050
Titanium (Ti), % 96.9 to 99
0
Residuals, % 0 to 0.4
0