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R58150 Titanium vs. S31254 Stainless Steel

R58150 titanium belongs to the titanium alloys classification, while S31254 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 S31254 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 140
200
Elongation at Break, % 13
40
Fatigue Strength, MPa 330
290
Poisson's Ratio 0.32
0.28
Reduction in Area, % 68
56
Shear Modulus, GPa 52
80
Shear Strength, MPa 470
490
Tensile Strength: Ultimate (UTS), MPa 770
720
Tensile Strength: Yield (Proof), MPa 550
330

Thermal Properties

Latent Heat of Fusion, J/g 410
300
Maximum Temperature: Mechanical, °C 320
1090
Melting Completion (Liquidus), °C 1760
1460
Melting Onset (Solidus), °C 1700
1420
Specific Heat Capacity, J/kg-K 500
460
Thermal Expansion, µm/m-K 8.4
17

Otherwise Unclassified Properties

Base Metal Price, % relative 48
28
Density, g/cm3 5.4
8.0
Embodied Carbon, kg CO2/kg material 31
5.5
Embodied Energy, MJ/kg 480
74
Embodied Water, L/kg 150
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 94
240
Resilience: Unit (Modulus of Resilience), kJ/m3 1110
270
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 32
24
Strength to Weight: Axial, points 40
25
Strength to Weight: Bending, points 35
22
Thermal Shock Resistance, points 48
15

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.020
Chromium (Cr), % 0
19.5 to 20.5
Copper (Cu), % 0
0.5 to 1.0
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.1
51.4 to 56.3
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 14 to 16
6.0 to 6.5
Nickel (Ni), % 0
17.5 to 18.5
Nitrogen (N), % 0 to 0.050
0.18 to 0.22
Oxygen (O), % 0 to 0.2
0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
0 to 0.8
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 83.5 to 86
0