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Grade 6 Titanium vs. AISI 317LN Stainless Steel

Grade 6 titanium belongs to the titanium alloys classification, while AISI 317LN 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 6 titanium and the bottom bar is AISI 317LN stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
200
Elongation at Break, % 11
45
Fatigue Strength, MPa 290
250
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 39
79
Shear Strength, MPa 530
430
Tensile Strength: Ultimate (UTS), MPa 890
620
Tensile Strength: Yield (Proof), MPa 840
270

Thermal Properties

Latent Heat of Fusion, J/g 410
290
Maximum Temperature: Mechanical, °C 310
1010
Melting Completion (Liquidus), °C 1580
1450
Melting Onset (Solidus), °C 1530
1400
Specific Heat Capacity, J/kg-K 550
470
Thermal Conductivity, W/m-K 7.8
14
Thermal Expansion, µm/m-K 9.4
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.2
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 36
21
Density, g/cm3 4.5
7.9
Embodied Carbon, kg CO2/kg material 30
4.3
Embodied Energy, MJ/kg 480
59
Embodied Water, L/kg 190
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 92
220
Resilience: Unit (Modulus of Resilience), kJ/m3 3390
190
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 55
22
Strength to Weight: Bending, points 46
20
Thermal Diffusivity, mm2/s 3.2
3.9
Thermal Shock Resistance, points 65
14

Alloy Composition

Aluminum (Al), % 4.0 to 6.0
0
Carbon (C), % 0 to 0.080
0 to 0.030
Chromium (Cr), % 0
18 to 20
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.5
57.9 to 67.9
Manganese (Mn), % 0
0 to 2.0
Molybdenum (Mo), % 0
3.0 to 4.0
Nickel (Ni), % 0
11 to 15
Nitrogen (N), % 0 to 0.030
0.1 to 0.22
Oxygen (O), % 0 to 0.2
0
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0
0 to 0.75
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 2.0 to 3.0
0
Titanium (Ti), % 89.8 to 94
0
Residuals, % 0 to 0.4
0