GENERAL
PROPERTIES
The AL-6XN alloy is a superaustenitic stainless steel which was developed
by Allegheny Ludlum Corporation. It exhibits far greater resistance
to chloride pitting, crevice corrosion and stress-corrosion cracking
than exhibited by the standard 300 series stainless steels, and is
less costly than the traditional nickel-base corrosion resistant alloys.
The AL-6XN alloy has exhibited good performance in variety of highly
corrosive environments. The AL-6XN alloy is available in a wide range
of product forms including plate, strip, sheet, bar, billet, tubing,
pipe, and castings. Its various product forms are covered by ASME
and ASTM specifications. The use of wrought AL-6XN products in the
ASME Boiler and Pressure Vessel is covered by Code Case 1997 (latest
revision) for Section VIII construction and by Code Case N-438 (latest
revision) for Section III construction. The use of AL-6XN castings
is covered by Code Case 2106 (latest revision) for Section VIII and
Code Case 497 (latest revision) for Section III construction. The
alloy is approved for both welded and unwelded construction under
ANSI/ASME B31.1 Code Case 155. Use of AL-6XN alloy in contact with
hydrogen sulfide-containing petroleum and natural gas is covered by
NACE MR0175-92.
PRODUCT FORMS & SPECIFICATIONS
info section