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AISI 317L Stainless Steel vs. Grade 26 Titanium

AISI 317L stainless steel belongs to the iron alloys classification, while grade 26 titanium belongs to the titanium alloys. There are 31 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 317L stainless steel and the bottom bar is grade 26 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 44
23
Fatigue Strength, MPa 220
250
Poisson's Ratio 0.28
0.32
Reduction in Area, % 56
34
Shear Modulus, GPa 82
41
Shear Strength, MPa 380
250
Tensile Strength: Ultimate (UTS), MPa 550
390
Tensile Strength: Yield (Proof), MPa 250
350

Thermal Properties

Latent Heat of Fusion, J/g 290
420
Maximum Temperature: Mechanical, °C 1010
320
Melting Completion (Liquidus), °C 1400
1660
Melting Onset (Solidus), °C 1380
1610
Specific Heat Capacity, J/kg-K 470
540
Thermal Conductivity, W/m-K 14
21
Thermal Expansion, µm/m-K 17
9.2

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
3.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
6.9

Otherwise Unclassified Properties

Base Metal Price, % relative 21
37
Density, g/cm3 7.9
4.5
Embodied Carbon, kg CO2/kg material 4.3
33
Embodied Energy, MJ/kg 59
530
Embodied Water, L/kg 160
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
85
Resilience: Unit (Modulus of Resilience), kJ/m3 150
580
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 19
24
Strength to Weight: Bending, points 19
26
Thermal Diffusivity, mm2/s 3.8
8.6
Thermal Shock Resistance, points 12
28

Alloy Composition

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), % 58 to 68
0 to 0.3
Manganese (Mn), % 0 to 2.0
0
Molybdenum (Mo), % 3.0 to 4.0
0
Nickel (Ni), % 11 to 15
0
Nitrogen (N), % 0 to 0.1
0 to 0.030
Oxygen (O), % 0
0 to 0.25
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
98.8 to 99.92
Residuals, % 0
0 to 0.4