Atlas bimetallic ATCR™ fittings—the aluminum tube fitting with a stainless steel face-seal, make UHV aluminum vacuum systems a reality.

Specifications
Atlas aluminum ATCR™ face-seal fittings are fully compatible with Swagelok VCR® and Parker-Hannifin VacuSeal® fittings.

Materials
Body/Weld Interface: Aluminum 6061-T6
Seal-Face: Stainless Steel 316L, Optional Titanium (commercially pure)
Rotatable Nut: Aluminum 6061-T6, Optional Stainless Steel 304

Environmental
Vacuum: Leak tested to < 1x10-9 cc/sec of He
Temperature, Peak: 300ºC (During weld-up)
Temperature, Operational: -200ºC to 250ºC

Mechanical (EXW Interface)
Tensile: 15,000psi
Shear: 10,000psi

Atlas Technologies
305 Glen Cove Road
Port Townsend, WA 98368
Phone: 360-385-3123
Fax: 360-379-5220
E-mail: info@AtlasUHV.com
webmaster@AtlasUHV.com

Atlas Technologies Sales Manager Position
Atlas ATCR face-seal fittings have a durable stainless steel sealing face explosion welded to an aluminum body

Atlas ATCR™ UHV Bimetallic Tube Fittings

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Atlas Socket, Butt and Male weld ATCR™ face-seal fittings are fitted with a durable stainless steel sealing face that is explosion welded (EXW) to an aluminum body. The bond produced is extremely rugged. All face-seal fittings are helium leak tested for service in UHV environments in excess of 1x10-9 Torr. Atlas ATCR™ fittings enable robust demountable use of aluminum tubing in cryogenic, physics and semiconductor applications worldwide. Standard socket, butt, male and chamber mount weld fitting geometries are available in 1/4, 3/8, 1/2, 3/4 and 1 inch tube diameters. Chamber mount fittings are available in four length configurations suitable for 1/2, 3/4, 1 and 1-1/4 inch chamber wall thicknesses.

Atlas ATCR™ fittings are fully compatible with Swagelok VCR® and Parker-Hannifin VacuSeal® fittings, but unlike these other fittings Atlas ATCR™ fittings are used where high thermal conductivity, light weight, high chemical resistance or where any of the advantageous physical properties of aluminum are required.

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