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Titanium 15-3-3-3 vs. S40920 Stainless Steel

Titanium 15-3-3-3 belongs to the titanium alloys classification, while S40920 stainless steel belongs to the iron alloys. There are 29 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 titanium 15-3-3-3 and the bottom bar is S40920 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
190
Elongation at Break, % 5.7 to 8.0
22
Fatigue Strength, MPa 610 to 710
130
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 39
75
Shear Strength, MPa 660 to 810
270
Tensile Strength: Ultimate (UTS), MPa 1120 to 1390
430
Tensile Strength: Yield (Proof), MPa 1100 to 1340
190

Thermal Properties

Latent Heat of Fusion, J/g 390
270
Maximum Temperature: Mechanical, °C 430
710
Melting Completion (Liquidus), °C 1620
1450
Melting Onset (Solidus), °C 1560
1400
Specific Heat Capacity, J/kg-K 520
480
Thermal Conductivity, W/m-K 8.1
26
Thermal Expansion, µm/m-K 9.8
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.2
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 40
6.5
Density, g/cm3 4.8
7.7
Embodied Carbon, kg CO2/kg material 59
2.0
Embodied Energy, MJ/kg 950
28
Embodied Water, L/kg 260
94

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 78 to 89
78
Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 32
25
Strength to Weight: Axial, points 64 to 80
15
Strength to Weight: Bending, points 50 to 57
16
Thermal Diffusivity, mm2/s 3.2
6.9
Thermal Shock Resistance, points 79 to 98
15

Alloy Composition

Aluminum (Al), % 2.5 to 3.5
0
Carbon (C), % 0 to 0.050
0 to 0.030
Chromium (Cr), % 2.5 to 3.5
10.5 to 11.7
Hydrogen (H), % 0 to 0.015
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
Tin (Sn), % 2.5 to 3.5
0
Titanium (Ti), % 72.6 to 78.5
0.15 to 0.5
Vanadium (V), % 14 to 16
0
Residuals, % 0 to 0.4
0