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Grade 28 Titanium vs. AISI 304N Stainless Steel

Grade 28 titanium belongs to the titanium alloys classification, while AISI 304N stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is grade 28 titanium and the bottom bar is AISI 304N stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 11 to 17
9.1 to 45
Fatigue Strength, MPa 330 to 480
220 to 440
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 40
77
Shear Strength, MPa 420 to 590
420 to 700
Tensile Strength: Ultimate (UTS), MPa 690 to 980
620 to 1180
Tensile Strength: Yield (Proof), MPa 540 to 810
270 to 850

Thermal Properties

Latent Heat of Fusion, J/g 410
290
Maximum Temperature: Mechanical, °C 330
960
Melting Completion (Liquidus), °C 1640
1420
Melting Onset (Solidus), °C 1590
1380
Specific Heat Capacity, J/kg-K 550
480
Thermal Conductivity, W/m-K 8.3
16
Thermal Expansion, µm/m-K 9.9
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.3
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 36
15
Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 37
3.0
Embodied Energy, MJ/kg 600
43
Embodied Water, L/kg 370
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 87 to 110
98 to 280
Resilience: Unit (Modulus of Resilience), kJ/m3 1370 to 3100
180 to 1830
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 43 to 61
22 to 42
Strength to Weight: Bending, points 39 to 49
21 to 32
Thermal Diffusivity, mm2/s 3.4
4.2
Thermal Shock Resistance, points 47 to 66
14 to 26

Alloy Composition

Aluminum (Al), % 2.5 to 3.5
0
Carbon (C), % 0 to 0.080
0 to 0.080
Chromium (Cr), % 0
18 to 20
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.25
66.4 to 73.9
Manganese (Mn), % 0
0 to 2.0
Nickel (Ni), % 0
8.0 to 10.5
Nitrogen (N), % 0 to 0.030
0.1 to 0.16
Oxygen (O), % 0 to 0.15
0
Phosphorus (P), % 0
0 to 0.045
Ruthenium (Ru), % 0.080 to 0.14
0
Silicon (Si), % 0
0 to 0.75
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 92.4 to 95.4
0
Vanadium (V), % 2.0 to 3.0
0
Residuals, % 0 to 0.4
0

Comparable Variants