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AISI 304LN Stainless Steel vs. Grade 28 Titanium

AISI 304LN stainless steel belongs to the iron alloys classification, while grade 28 titanium belongs to the titanium 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 AISI 304LN stainless steel and the bottom bar is grade 28 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 7.8 to 46
11 to 17
Fatigue Strength, MPa 200 to 440
330 to 480
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 77
40
Shear Strength, MPa 400 to 680
420 to 590
Tensile Strength: Ultimate (UTS), MPa 580 to 1160
690 to 980
Tensile Strength: Yield (Proof), MPa 230 to 870
540 to 810

Thermal Properties

Latent Heat of Fusion, J/g 290
410
Maximum Temperature: Mechanical, °C 960
330
Melting Completion (Liquidus), °C 1420
1640
Melting Onset (Solidus), °C 1380
1590
Specific Heat Capacity, J/kg-K 480
550
Thermal Conductivity, W/m-K 15
8.3
Thermal Expansion, µm/m-K 16
9.9

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 16
36
Density, g/cm3 7.8
4.5
Embodied Carbon, kg CO2/kg material 3.1
37
Embodied Energy, MJ/kg 44
600
Embodied Water, L/kg 150
370

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 83 to 270
87 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 1900
1370 to 3100
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 21 to 41
43 to 61
Strength to Weight: Bending, points 20 to 31
39 to 49
Thermal Diffusivity, mm2/s 4.0
3.4
Thermal Shock Resistance, points 13 to 26
47 to 66

Alloy Composition

Aluminum (Al), % 0
2.5 to 3.5
Carbon (C), % 0 to 0.030
0 to 0.080
Chromium (Cr), % 18 to 20
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 65 to 73.9
0 to 0.25
Manganese (Mn), % 0 to 2.0
0
Nickel (Ni), % 8.0 to 12
0
Nitrogen (N), % 0.1 to 0.16
0 to 0.030
Oxygen (O), % 0
0 to 0.15
Phosphorus (P), % 0 to 0.045
0
Ruthenium (Ru), % 0
0.080 to 0.14
Silicon (Si), % 0 to 0.75
0
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
92.4 to 95.4
Vanadium (V), % 0
2.0 to 3.0
Residuals, % 0
0 to 0.4

Comparable Variants