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R58150 Titanium vs. S44401 Stainless Steel

R58150 titanium belongs to the titanium alloys classification, while S44401 stainless steel belongs to the iron alloys. There are 26 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is R58150 titanium and the bottom bar is S44401 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 140
200
Elongation at Break, % 13
21
Fatigue Strength, MPa 330
200
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 52
78
Shear Strength, MPa 470
300
Tensile Strength: Ultimate (UTS), MPa 770
480
Tensile Strength: Yield (Proof), MPa 550
300

Thermal Properties

Latent Heat of Fusion, J/g 410
280
Maximum Temperature: Mechanical, °C 320
930
Melting Completion (Liquidus), °C 1760
1460
Melting Onset (Solidus), °C 1700
1420
Specific Heat Capacity, J/kg-K 500
470
Thermal Expansion, µm/m-K 8.4
10

Otherwise Unclassified Properties

Base Metal Price, % relative 48
12
Density, g/cm3 5.4
7.8
Embodied Carbon, kg CO2/kg material 31
2.9
Embodied Energy, MJ/kg 480
40
Embodied Water, L/kg 150
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 94
90
Resilience: Unit (Modulus of Resilience), kJ/m3 1110
230
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 32
25
Strength to Weight: Axial, points 40
17
Strength to Weight: Bending, points 35
18
Thermal Shock Resistance, points 48
17

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.025
Chromium (Cr), % 0
17.5 to 19.5
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.1
75.1 to 80.6
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 14 to 16
1.8 to 2.5
Nickel (Ni), % 0
0 to 1.0
Nitrogen (N), % 0 to 0.050
0 to 0.035
Oxygen (O), % 0 to 0.2
0
Phosphorus (P), % 0
0 to 0.040
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 83.5 to 86
0.2 to 0.8