Bimetal Ti/Al CF Flanges

Titanium UHV Sealing for Aluminum Chambers

The Atlas Bimetal Ti/Al CF Flange with aluminum flange body bonded to rugged titanium uses the time-tested reliability of the ConFlat® (CF) knife-edge seal. After welding the CFTA™ flange to an aluminum vacuum chamber, it becomes a completely non-magnetic UHV chamber. This supports applications where high magnetic permeability is detrimental to beam quality or experimental results. 

Non-magnetic aluminum vacuum chambers are used for UHV synchrotron, particle physics, and industrial applications where high magnetic permeability is detrimental to beam quality or experimental results. Such applications include non-magnetic beam tubes, wigglers, undulators, free electron lasers (FEL), drift tubes, and spectrometers.

Applications:

• UHV synchrotron
• Particle physics 
• Semiconductor fabrication
• Industrial applications
• XHV quantum physics 
• Beam tubes
• Wigglers and undulators 
• Free electron lasers (FEL) 
• Drift tubes
• Spectrometers

Low Z, Low Nuclear: Atlas titanium-aluminum flanges enable aluminum UHV systems to be used in demanding nuclear applications requiring a low z environment.

• Cyclotrons 
• Nuclear reactors
• Medical imaging

Light/Low Weight: With weight-to-volume ratios 1/3 that of stainless vacuum chambers, an aluminum chamber with Ti/Al flanges significantly reduces overall weight:

• Aerospace  
• Portable systems

Features & Specifications:

• UHV Rated to 1 x 10-13 Torr
• Bake-out temperatures up to 250°C 
• 1/3 the weight of stainless flanges
• Fully compatible with industry standard ConFlat flange interface – CERN’s innovative 20° back-bevel (90° included angle) knife-edge design 
• Standard flange sizes: 1.33”-16.5” (DN16-DN500)
• Used in high (HV), ultrahigh (UHV) and extreme high vacuum (XHV) applications 

Materials

• Body/weld interface: aluminum 6061-T6
• Sealing knife-edge face: titanium grade 2, (commercially pure titanium optional) 
• Rotatable collar/receiver: aluminum 6061-T6, titanium 0ptional

Environmental

• Vacuum leak tested: < 1 x 10-9 cc/sec of He

Thermal

• Peak temperature: 300°C (during weld-up)
• Operational temperature: -200°C to 250°C

Mechanical—Bonded Interface

• Tensile: 15,00psi (103MPa)
• Shear: 10,000psi (69MPa)