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AISI 317L Stainless Steel vs. Grade 9 Titanium

AISI 317L stainless steel belongs to the iron alloys classification, while grade 9 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 9 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 44
11 to 17
Fatigue Strength, MPa 220
330 to 480
Poisson's Ratio 0.28
0.32
Reduction in Area, % 56
28
Shear Modulus, GPa 82
40
Shear Strength, MPa 380
430 to 580
Tensile Strength: Ultimate (UTS), MPa 550
700 to 960
Tensile Strength: Yield (Proof), MPa 250
540 to 830

Thermal Properties

Latent Heat of Fusion, J/g 290
410
Maximum Temperature: Mechanical, °C 1010
330
Melting Completion (Liquidus), °C 1400
1640
Melting Onset (Solidus), °C 1380
1590
Specific Heat Capacity, J/kg-K 470
550
Thermal Conductivity, W/m-K 14
8.1
Thermal Expansion, µm/m-K 17
9.1

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 21
37
Density, g/cm3 7.9
4.5
Embodied Carbon, kg CO2/kg material 4.3
36
Embodied Energy, MJ/kg 59
580
Embodied Water, L/kg 160
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
89 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 150
1380 to 3220
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 19
43 to 60
Strength to Weight: Bending, points 19
39 to 48
Thermal Diffusivity, mm2/s 3.8
3.3
Thermal Shock Resistance, points 12
52 to 71

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), % 58 to 68
0 to 0.25
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 0.15
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 0.75
0
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
92.6 to 95.5
Vanadium (V), % 0
2.0 to 3.0
Residuals, % 0
0 to 0.4