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R58150 Titanium vs. S44635 Stainless Steel

R58150 titanium belongs to the titanium alloys classification, while S44635 stainless steel belongs to the iron alloys. There are 26 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is R58150 titanium and the bottom bar is S44635 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
390
Poisson's Ratio 0.32
0.27
Shear Modulus, GPa 52
81
Shear Strength, MPa 470
450
Tensile Strength: Ultimate (UTS), MPa 770
710
Tensile Strength: Yield (Proof), MPa 550
580

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
1420
Specific Heat Capacity, J/kg-K 500
470
Thermal Expansion, µm/m-K 8.4
11

Otherwise Unclassified Properties

Base Metal Price, % relative 48
22
Density, g/cm3 5.4
7.8
Embodied Carbon, kg CO2/kg material 31
4.4
Embodied Energy, MJ/kg 480
62
Embodied Water, L/kg 150
170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 94
150
Resilience: Unit (Modulus of Resilience), kJ/m3 1110
810
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 32
25
Strength to Weight: Axial, points 40
25
Strength to Weight: Bending, points 35
23
Thermal Shock Resistance, points 48
23

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.025
Chromium (Cr), % 0
24.5 to 26
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.1
61.5 to 68.5
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 14 to 16
3.5 to 4.5
Nickel (Ni), % 0
3.5 to 4.5
Niobium (Nb), % 0
0.2 to 0.8
Nitrogen (N), % 0 to 0.050
0 to 0.035
Oxygen (O), % 0 to 0.2
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 0.75
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 83.5 to 86
0.2 to 0.8