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R56401 Titanium vs. AISI 329 Stainless Steel

R56401 titanium belongs to the titanium alloys classification, while AISI 329 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is R56401 titanium and the bottom bar is AISI 329 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 9.1
17
Fatigue Strength, MPa 480
330
Poisson's Ratio 0.32
0.27
Shear Modulus, GPa 40
80
Shear Strength, MPa 560
440
Tensile Strength: Ultimate (UTS), MPa 940
710
Tensile Strength: Yield (Proof), MPa 850
540

Thermal Properties

Latent Heat of Fusion, J/g 410
300
Maximum Temperature: Mechanical, °C 340
1100
Melting Completion (Liquidus), °C 1610
1440
Melting Onset (Solidus), °C 1560
1390
Specific Heat Capacity, J/kg-K 560
480
Thermal Conductivity, W/m-K 7.1
16
Thermal Expansion, µm/m-K 9.6
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.0
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 36
16
Density, g/cm3 4.5
7.7
Embodied Carbon, kg CO2/kg material 38
3.1
Embodied Energy, MJ/kg 610
44
Embodied Water, L/kg 200
170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 83
110
Resilience: Unit (Modulus of Resilience), kJ/m3 3440
730
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 59
25
Strength to Weight: Bending, points 48
23
Thermal Diffusivity, mm2/s 2.9
4.3
Thermal Shock Resistance, points 67
19

Alloy Composition

Aluminum (Al), % 5.5 to 6.5
0
Carbon (C), % 0 to 0.080
0 to 0.080
Chromium (Cr), % 0
23 to 28
Hydrogen (H), % 0 to 0.012
0
Iron (Fe), % 0 to 0.25
63.1 to 74
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
1.0 to 2.0
Nickel (Ni), % 0
2.0 to 5.0
Nitrogen (N), % 0 to 0.050
0
Oxygen (O), % 0 to 0.13
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 0.75
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 88.5 to 91
0
Vanadium (V), % 3.5 to 4.5
0