Atlas CF FlangeTM Specifications
Atlas CF FlangeTM Specifications
The Atlas CF FlangeTM brings together the
time-tested reliability of all-metal-seal
technology with the exceptional ultrahigh
vacuum properties of aluminum. The Atlas
CF FlangeTM—the aluminum flange with a
stainless steel knife-edge seal—make UHV
aluminum vacuum systems a reality.
Atlas bimetallic CF flanges—the aluminum flange with
a stainless steel knife-edge seal—make UHV aluminum
vacuum systems a reality.
Atlas CF FlangeTM Features
Using proprietary and state-of-the-art explosion bonding technology, our stainless to aluminum bimetallic flanges are fully compatible
with the industry standard Conflat® flange
interface. Employing CERN’s innovative 20°
back-bevel (90° included angle) knife-edge
design, the Atlas CF FlangeTM provides a longer service life than conventional CF flanges.
Atlas CF flanges are suitable for service in
vacuum levels to 1x10-13 Torr and 250°C bakeout temperatures. Our flanges can be easily
welded to aluminum vacuum vessels and are
the key to successful integration of aluminum
UHV technology in your application.
• atented UHV aluminum to stainless
P
explosion welding technology (EXW)
that is only available from Atlas
• HV Rated to 1x10 -13 Torr
U
• 1/3 The weight of stainless flanges
• 90° included angle long-life knife
edge design developed at CERN
• 100% Compatible with the industry
standard Conflat ® interface
• tandard and reduced stainless steel
S
models available
• ryogenic, non-magnetic, rectanguC
lar and other specialty flange solutions also available
In UHV synchrotron and particle physics
applications, where high magnetic permeability is detrimental to beam quality, Atlas
CF flanges are central to non-magnetic beam
tubes, wigglers, undulators and drift tubes.
In neutron applications such as the production of radioisotopes for medical imaging,
aluminum vessels fitted with our flanges are
replacing all stainless steel UHV systems—
because residual, neutron induced, radiation
in aluminum has a half-life orders of magnitude shorter than that of stainless steel. Our
flanges enable aluminum UHV system use in
cyclotrons and nuclear reactors.
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Specifications
Atlas CF Flanges are fully compatible with the industry
standard Conflat® flange. Atlas uses CERN’s 20°
back-bevel knife-edge design with a long-life 90°
encompassed angle geometry. Atlas flanges are quality
controlled using material batch monitoring processes.
Materials
Body / Weld Interface
Aluminum 6061 T-6
Knife-Edge
Stainless Steel 316L
Titanium (Commercially Pure) Optional
Rotatable Collar / Receiver
Aluminum 6061 T-6
304 Stainless Steel Optional
Atlas CF Dimensional Table — Inches
Upon close examination you'll note that the Atlas CF
FlangeTM knife-edge has a slightly different geometry
from the traditional Conflat® design. Atlas' knife-edge
geometry is modeled after CERN’s innovative 20°
back-bevel design—the 90° included angle knife-edge,
accounts for added seal robustness and longer flange life.
CERN Back-Bevel Design
70°
Environmental
0.026 ± 0.002
0.021
Vacuum Leak Tested
< 1x10 -9 cc/sec of He
Thermal
Peak Temperature (< 2 Min. during weld-up)
500°C
Operational Temperature
-200°C to 250°C
Mechanical (EXW Interface)
Tensile
Shear
4 Atlas Technologies
Our flanges are used in prominent high (HV),
ultrahigh (UHV) and extreme high vacuum
(EHV) applications around the world. They
find extensive use with semiconductor fabrication OEMs where superior heat conduction,
chemical resistance, manufacturing ease and
the lower cost of aluminum vacuum systems
translate into measurable productivity and
cost of ownership advantages.
www.AtlasUHV.com
15,000psi
10,000psi
20°
90°
20°
360-385-3123