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R58150 Titanium vs. S44625 Stainless Steel

R58150 titanium belongs to the titanium alloys classification, while S44625 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 S44625 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 140
200
Elongation at Break, % 13
22
Fatigue Strength, MPa 330
240
Poisson's Ratio 0.32
0.27
Shear Modulus, GPa 52
80
Shear Strength, MPa 470
370
Tensile Strength: Ultimate (UTS), MPa 770
590
Tensile Strength: Yield (Proof), MPa 550
360

Thermal Properties

Latent Heat of Fusion, J/g 410
290
Maximum Temperature: Mechanical, °C 320
1100
Melting Completion (Liquidus), °C 1760
1440
Melting Onset (Solidus), °C 1700
1400
Specific Heat Capacity, J/kg-K 500
480
Thermal Expansion, µm/m-K 8.4
11

Otherwise Unclassified Properties

Base Metal Price, % relative 48
14
Density, g/cm3 5.4
7.7
Embodied Carbon, kg CO2/kg material 31
2.8
Embodied Energy, MJ/kg 480
39
Embodied Water, L/kg 150
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 94
110
Resilience: Unit (Modulus of Resilience), kJ/m3 1110
310
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
25 to 27.5
Copper (Cu), % 0
0 to 0.2
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.1
69.4 to 74.3
Manganese (Mn), % 0
0 to 0.4
Molybdenum (Mo), % 14 to 16
0.75 to 1.5
Nickel (Ni), % 0
0 to 0.5
Nitrogen (N), % 0 to 0.050
0 to 0.015
Oxygen (O), % 0 to 0.2
0
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0
0 to 0.4
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 83.5 to 86
0