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Grade 28 Titanium vs. S40910 Stainless Steel

Grade 28 titanium belongs to the titanium alloys classification, while S40910 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 grade 28 titanium and the bottom bar is S40910 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 11 to 17
23
Fatigue Strength, MPa 330 to 480
130
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 40
75
Shear Strength, MPa 420 to 590
270
Tensile Strength: Ultimate (UTS), MPa 690 to 980
430
Tensile Strength: Yield (Proof), MPa 540 to 810
190

Thermal Properties

Latent Heat of Fusion, J/g 410
270
Maximum Temperature: Mechanical, °C 330
710
Melting Completion (Liquidus), °C 1640
1450
Melting Onset (Solidus), °C 1590
1410
Specific Heat Capacity, J/kg-K 550
480
Thermal Conductivity, W/m-K 8.3
26
Thermal Expansion, µm/m-K 9.9
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.3
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 36
7.0
Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 37
2.0
Embodied Energy, MJ/kg 600
28
Embodied Water, L/kg 370
94

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 87 to 110
80
Resilience: Unit (Modulus of Resilience), kJ/m3 1370 to 3100
94
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 43 to 61
16
Strength to Weight: Bending, points 39 to 49
16
Thermal Diffusivity, mm2/s 3.4
6.9
Thermal Shock Resistance, points 47 to 66
16

Alloy Composition

Aluminum (Al), % 2.5 to 3.5
0
Carbon (C), % 0 to 0.080
0 to 0.030
Chromium (Cr), % 0
10.5 to 11.7
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.25
85 to 89.5
Manganese (Mn), % 0
0 to 1.0
Nickel (Ni), % 0
0 to 0.5
Niobium (Nb), % 0
0 to 0.17
Nitrogen (N), % 0 to 0.030
0 to 0.030
Oxygen (O), % 0 to 0.15
0
Phosphorus (P), % 0
0 to 0.040
Ruthenium (Ru), % 0.080 to 0.14
0
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 92.4 to 95.4
0 to 0.5
Vanadium (V), % 2.0 to 3.0
0
Residuals, % 0 to 0.4
0