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R56401 Titanium vs. S40920 Stainless Steel

R56401 titanium belongs to the titanium alloys classification, while S40920 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 S40920 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 9.1
22
Fatigue Strength, MPa 480
130
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 40
75
Shear Strength, MPa 560
270
Tensile Strength: Ultimate (UTS), MPa 940
430
Tensile Strength: Yield (Proof), MPa 850
190

Thermal Properties

Latent Heat of Fusion, J/g 410
270
Maximum Temperature: Mechanical, °C 340
710
Melting Completion (Liquidus), °C 1610
1450
Melting Onset (Solidus), °C 1560
1400
Specific Heat Capacity, J/kg-K 560
480
Thermal Conductivity, W/m-K 7.1
26
Thermal Expansion, µm/m-K 9.6
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.0
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 36
6.5
Density, g/cm3 4.5
7.7
Embodied Carbon, kg CO2/kg material 38
2.0
Embodied Energy, MJ/kg 610
28
Embodied Water, L/kg 200
94

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 83
78
Resilience: Unit (Modulus of Resilience), kJ/m3 3440
97
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 59
15
Strength to Weight: Bending, points 48
16
Thermal Diffusivity, mm2/s 2.9
6.9
Thermal Shock Resistance, points 67
15

Alloy Composition

Aluminum (Al), % 5.5 to 6.5
0
Carbon (C), % 0 to 0.080
0 to 0.030
Chromium (Cr), % 0
10.5 to 11.7
Hydrogen (H), % 0 to 0.012
0
Iron (Fe), % 0 to 0.25
85.1 to 89.4
Manganese (Mn), % 0
0 to 1.0
Nickel (Ni), % 0
0 to 0.5
Niobium (Nb), % 0
0 to 0.1
Nitrogen (N), % 0 to 0.050
0 to 0.030
Oxygen (O), % 0 to 0.13
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 88.5 to 91
0.15 to 0.5
Vanadium (V), % 3.5 to 4.5
0