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R58150 Titanium vs. AISI 321 Stainless Steel

R58150 titanium belongs to the titanium alloys classification, while AISI 321 stainless steel belongs to the iron alloys. There are 26 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 AISI 321 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 140
200
Elongation at Break, % 13
34 to 50
Fatigue Strength, MPa 330
220 to 270
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 52
77
Shear Strength, MPa 470
420 to 460
Tensile Strength: Ultimate (UTS), MPa 770
590 to 690
Tensile Strength: Yield (Proof), MPa 550
220 to 350

Thermal Properties

Latent Heat of Fusion, J/g 410
290
Maximum Temperature: Mechanical, °C 320
870
Melting Completion (Liquidus), °C 1760
1430
Melting Onset (Solidus), °C 1700
1400
Specific Heat Capacity, J/kg-K 500
480
Thermal Expansion, µm/m-K 8.4
17

Otherwise Unclassified Properties

Base Metal Price, % relative 48
16
Density, g/cm3 5.4
7.8
Embodied Carbon, kg CO2/kg material 31
3.2
Embodied Energy, MJ/kg 480
45
Embodied Water, L/kg 150
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 94
190 to 230
Resilience: Unit (Modulus of Resilience), kJ/m3 1110
130 to 310
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 32
25
Strength to Weight: Axial, points 40
21 to 25
Strength to Weight: Bending, points 35
20 to 22
Thermal Shock Resistance, points 48
13 to 15

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.080
Chromium (Cr), % 0
17 to 19
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.1
65.3 to 74
Manganese (Mn), % 0
0 to 2.0
Molybdenum (Mo), % 14 to 16
0
Nickel (Ni), % 0
9.0 to 12
Nitrogen (N), % 0 to 0.050
0 to 0.1
Oxygen (O), % 0 to 0.2
0
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0
0 to 0.75
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 83.5 to 86
0 to 0.7