316LN ConFlat Flanges

316LN SS ConFlat flanges can be utilized from ultra-high vacuum (UHV) through extreme high vacuum (XHV) applications including superconductors, beamlines, x-rays, spectroscopy, and lasers. .These flanges are ideal for use in magnetically sensitive UHV/XHV systems when mounting instrumentation, gauges, feedthroughs, and other components.

Refined through an electroslag remelting (ESR) process, the AISI 316LN (EN 1.4429ESR) stainless steel alloy offers greater grain homogeneity with a reduction in non-metal inclusions compared to its 316L counterpart. The 316LN alloy also differs from 316L in its increased nitrogen content. As a result, 316LN offers increased material strength while maintaining high ductility in cryogenic temperature ranges.

The benefits of 316LN include:

  • Low magnetic permeability (μmax= 1.005)
  • Increased resistance to heat hardening
  • Increased resistance to irradiation damage
  • Resistance to sensitization
  • Resistance to corrosion

Resistance to heat hardening is a consideration for procedures such as bake-outs and annealing that require high temperatures to obtain desired process results. The chemical microstructure of 316LN ensures irradiation resistance while maintaining weldability. This allows continued compatibility of ConFlat flanges with UHV components such as:


The majority of this content was taken from a product release notice from ANCORP of Williston , FL.

IES Technical Sales represents ANCORP in the six New England states and New York.