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R58150 Titanium vs. S44800 Stainless Steel

R58150 titanium belongs to the titanium alloys classification, while S44800 stainless steel belongs to the iron alloys. There are 27 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is R58150 titanium and the bottom bar is S44800 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 140
210
Elongation at Break, % 13
23
Fatigue Strength, MPa 330
300
Poisson's Ratio 0.32
0.27
Reduction in Area, % 68
45
Shear Modulus, GPa 52
82
Shear Strength, MPa 470
370
Tensile Strength: Ultimate (UTS), MPa 770
590
Tensile Strength: Yield (Proof), MPa 550
450

Thermal Properties

Latent Heat of Fusion, J/g 410
300
Maximum Temperature: Mechanical, °C 320
1100
Melting Completion (Liquidus), °C 1760
1460
Melting Onset (Solidus), °C 1700
1410
Specific Heat Capacity, J/kg-K 500
480
Thermal Expansion, µm/m-K 8.4
11

Otherwise Unclassified Properties

Base Metal Price, % relative 48
19
Density, g/cm3 5.4
7.8
Embodied Carbon, kg CO2/kg material 31
3.8
Embodied Energy, MJ/kg 480
52
Embodied Water, L/kg 150
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 94
120
Resilience: Unit (Modulus of Resilience), kJ/m3 1110
480
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 32
25
Strength to Weight: Axial, points 40
21
Strength to Weight: Bending, points 35
20
Thermal Shock Resistance, points 48
19

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.010
Chromium (Cr), % 0
28 to 30
Copper (Cu), % 0
0 to 0.15
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.1
62.6 to 66.5
Manganese (Mn), % 0
0 to 0.3
Molybdenum (Mo), % 14 to 16
3.5 to 4.2
Nickel (Ni), % 0
2.0 to 2.5
Nitrogen (N), % 0 to 0.050
0 to 0.020
Oxygen (O), % 0 to 0.2
0
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0
0 to 0.2
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 83.5 to 86
0