316LN ConFlat (CF) Flanges

ANCORP’s 316LN austenitic stainless steel CF flanges are produced for critical ultra-high vacuum (UHV) and extreme high vacuum (XHV) applications where low magnetic permeability is required.

316LN CF flanges are machined from low carbon, nitrogen-enriched material. During the production of the material, electroslag remelting (ESR) is utilized to further eliminate impurities while increasing the final quality of the stainless steel. They feature a vacuum rating of 1×10^-13 Torr and a temperature range of -200°C up to 450°C. As a result of the additional refining process 316LN also possesses an increased resistance to heat hardening so it is possible to use at higher temperatures.

CF Flanges are available in two general styles: fixed and rotatable. Fixed flanges have a set bolt hole orientation, while rotatable flanges have a two-piece design allowing for bolt hole rotation to ease bolt alignment when mating the two flanges.

Both fixed and rotatable flanges are available with clearance and tapped bolt holes. Clearance bolt holes allow for the unrestricted passage of a bolt through the flanges. The bolt is then tightened with a nut on the backside of the flange assembly. Tapped bolt holes are threaded to receive and tighten the bolt directly and do not utilize a nut.