904L Super Austenitic Stainless Steel Pipe A312 UNS N08904 W Nr 1.4539

Product Specification

904L Super Austenitic Stainless Steel Pipe A312 UNS N08904 W Nr 1.4539

904L Super Austenitic Stainless Steel Pipe UNS N08904 W.-Nr. 1.4539

ASTM A312, ASTM A213 , 904L​,UNS N08904 Super Austenitic Stainless Steel Pipe and Tube

904L alloy is a super austenitic stainless steel designed for a variety of medium to high corrosion resistance environments. The high content of chromium and nickel, plus molybdenum and copper as a combined component, guarantees the product's excellent corrosion resistance.

With a high alloy chemical composition of 25% nickel and 4.5% molybdenum, 904L is superior to molybdenum-containing stainless steels 316L and 317L in terms of resistance to chloride stress corrosion cracking, pitting and corrosion.

The 904L alloy was originally developed for corrosion resistance in dilute sulfuric acid. It also has good corrosion resistance to other inorganic acids (such as hot phosphoric acid) and most organic acids.

904L alloy is easy to weld and process in standard workshop manufacturing practices.

Description:
904L,Al-904L,UNS N08904,SUS890L,F904L,W.-Nr. 1.4539,NAS 255,00Cr20Ni25Mo4.5Cu Super Austenitic Stainless Steel Pipe or Tube

Standard:

ASTM A312 Seamless and Welded Austenitic Stainless Steel Pipe
ASTM A269 Seamless and Welded Austenitic Stainless Steel Pipe for General Equipment
ASTM B673, ASTM B674, ASTM B677, ASTM B675, ASTM B676, ASTM B690

Material: 904L,Al-904L,UNS N08904,SUS890L,F904L,W.-Nr. 1.4539,NAS 255,00Cr20Ni25Mo4.5Cu

Nominal Dia: 1/2 "to 24" NB for seamless pipe, 3/8" to 40" NB for welded pipe
Schedules: 5S, 10S, 40S, 80S, 10, 20, 30...120, 140, 160, XXS
All dimensions are in accordance with ANSI B36.19 and ANSI B36.10

Process:
Cold drawn, Cold rolled, Precision Rolled for Seamless Pipe or Tube
Gas tungsten arc welding, Plasma arc welding (PAW),Submerged arc welding (SAW) For Welded Pipe or Tube

Finish: Annealed & pickled, bright annealing, polished

Ends: Beveled or plain end, square cut, burr free ,Plastic Cap at Both end

Packing: Bare packing/bundle packing with woven bag/wooden or steel frame crate packing/plastic cap protection at the both sides of tubes and suitably protected for sea-worthly delivery or as requested.

Inspection and Test Procedure
1. 100% PMI,Spectro Chemical Aanlysis Test for Raw Material
2. 100% Dimension & Visual Examination
3. Mechanical Properties Test Include Tension Test,Flaring Test (For Seamless tube/pipe)/ Flange Test (For Welded Pipe & Tube), Hardness Test ,Reversed Flattening Test
4. 100% Hydrostatic Test or 100% NON-DESTRUCTIVE Test (ET or UT)
5. Radiographic Test for Welded Pipe (shall be accordance with specification,or shall be as agreed upon between the purchaser and vendor)
6. Straightness Test (optional)
7. Roughness Test (optional)
8. Intergranular Corrosion Test(optional)
9. Impact Test (optional)
10. Grain Size Determinations (optional)
NOTES : ALL THE TESTS AND INSPECTION RESULT NEED TO BE SHOWED IN REPORTS ACCORDING TO STANDARD AND SPECIFICATION.