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904L Stainless Steel Pipes & Tubes (Alloy 904L Tube)


Material Description

UNS N08904

Chemical Composition, %


C

Mn

P

S

Si

Cr

Ni

Mo

Cu

.02

2.0

.045

.035

1.0

19.0-23.0

23.0-28.0

4.0-5.0

1.0-2.0


904L is a high-alloy austenitic stainless steel with low carbon content. The grade is intended for use under severe corrosive conditions.


Corrosion Resistance

● Good resistance to dilute sulfuric acid

● 904L is fully austenitic and is less sensitive to precipitation ferrite and sigma phases than conventional austenitic grades with high molybdenum content

● 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.


Application

● 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

● Gas washing

● Chemical and pharmaceutical industries


Seamless Tube Information

Specification: ASTM A-269 / ASME SA-269, ASTM A-312 / ASME SA-312, ASTM B-677 / ASME SB-677

Outside Diameter: 6.0-406 mm (1/4’’ – 16’’)

Wall Thickness: 0.5-35 mm (0.0196’’ – 1.378’’)

Length: Max.33000 mm (the maximum length is for the scope of special diameters and walls)

Other sizes are on the request