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Grade 38 Titanium vs. N08904 Stainless Steel

Grade 38 titanium belongs to the titanium alloys classification, while N08904 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 38 titanium and the bottom bar is N08904 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 11
38
Fatigue Strength, MPa 530
200
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 40
79
Shear Strength, MPa 600
370
Tensile Strength: Ultimate (UTS), MPa 1000
540
Tensile Strength: Yield (Proof), MPa 910
240

Thermal Properties

Latent Heat of Fusion, J/g 410
300
Maximum Temperature: Mechanical, °C 330
1100
Melting Completion (Liquidus), °C 1620
1440
Melting Onset (Solidus), °C 1570
1390
Specific Heat Capacity, J/kg-K 550
470
Thermal Conductivity, W/m-K 8.0
12
Thermal Expansion, µm/m-K 9.3
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.2
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 36
32
Density, g/cm3 4.5
8.1
Embodied Carbon, kg CO2/kg material 35
5.8
Embodied Energy, MJ/kg 560
79
Embodied Water, L/kg 160
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
170
Resilience: Unit (Modulus of Resilience), kJ/m3 3840
150
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 62
19
Strength to Weight: Bending, points 49
18
Thermal Diffusivity, mm2/s 3.2
3.1
Thermal Shock Resistance, points 72
12

Alloy Composition


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Aluminum (Al), % 3.5 to 4.5
0
Carbon (C), % 0 to 0.080
0 to 0.020
Chromium (Cr), % 0
19 to 23
Copper (Cu), % 0
1.0 to 2.0
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 1.2 to 1.8
38.8 to 53
Manganese (Mn), % 0
0 to 2.0
Molybdenum (Mo), % 0
4.0 to 5.0
Nickel (Ni), % 0
23 to 28
Nitrogen (N), % 0 to 0.030
0 to 0.1
Oxygen (O), % 0.2 to 0.3
0
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.035
Titanium (Ti), % 89.9 to 93.1
0
Vanadium (V), % 2.0 to 3.0
0
Residuals, % 0 to 0.4
0