Seamless Pipe 1/2" W
ASTM B677, B366
ASME SB677, SB366
904L is a high-alloy austenitic stainless steel
with low carbon content. The grade is intended for
use under severe corrosive conditions. It has been
application proved over many years and was originally
developed to resist corrosion in dilute sulfuric
acid. It is standardized and approved for pressure
vessel use in several countries. Structurally, 904L
is fully austenitic and is less sensitive to precipitation
ferrite and sigma phases than conventional austenitic
grades with high molybdenum content. Characteristically,
due to the combination of relatively high contents
of chromium, nickel, molybdenum and copper 904L
has good resistance to general corrosion, particularly
in sulfuric and phosphoric conditions.
Good resistance to pitting and crevice corrosion.
Very good resistance to stress corrosion cracking.
Good resistance to intergranular corrosion.
Good formability and weldability.
Maximum service temperatures of
450 deg.C. (824 deg.F).
Production and transport of sulfuric acid
Metal pickling in sulfuric acid
Production and concentration of phosphoric acid
Use in seawater, brackish water, condensers, heat
exchangers and pipe work in general
Paper and allied industries
Chemical and pharmaceutical industries
Tensile Strength (KSI) 70
Yield Strength (KSI) 25
KSI can be converted to MPA (Megapascals) by multiplying