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Grade 6 Titanium vs. AISI 317 Stainless Steel

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

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
200
Elongation at Break, % 11
35 to 55
Fatigue Strength, MPa 290
250 to 330
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 39
79
Shear Strength, MPa 530
420 to 470
Tensile Strength: Ultimate (UTS), MPa 890
580 to 710
Tensile Strength: Yield (Proof), MPa 840
250 to 420

Thermal Properties

Latent Heat of Fusion, J/g 410
290
Maximum Temperature: Mechanical, °C 310
590
Melting Completion (Liquidus), °C 1580
1400
Melting Onset (Solidus), °C 1530
1380
Specific Heat Capacity, J/kg-K 550
470
Thermal Conductivity, W/m-K 7.8
15
Thermal Expansion, µm/m-K 9.4
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.2
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.6

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
210 to 260
Resilience: Unit (Modulus of Resilience), kJ/m3 3390
150 to 430
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 55
20 to 25
Strength to Weight: Bending, points 46
20 to 22
Thermal Diffusivity, mm2/s 3.2
4.1
Thermal Shock Resistance, points 65
12 to 15

Alloy Composition

Aluminum (Al), % 4.0 to 6.0
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 0.5
58 to 68
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 to 0.1
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