Stainless Steel ERW Pipe 904L

Stainless Steel ERW Pipe 904L

904L Stainless Steel Seamless pipes | 904L seamless stainless steel pipes | SS 904L Seamless pipes | Exporter of comprehensive range 904L Stainless Steel Seamless pipes | TP904L Seamless Stainless Steel Pipe

Suppliers and Exporter of ASTM A312 TP904L STAINLESS STEEL SEAMLESS pipes 904L in India.

Suppliers and Exporters of ASTM A312 TP904L Stainless Steel Pipes in India.

Seamless austenitic stainless steel pipes in TP904L

904L Stainless Steel Pipes Product Range:
Specifications : ASTM A/ASME SA 269/677 904L
Sizes (Seamless) : 1/2" NB - 8" NB
Sizes (ERW) : 1/2" NB - 24" NB
Sizes (EFW) : 6" NB - 100" NB
Wall Thickness available : Schedule 5S - Schedule XXS (heavier on request)
Other Materials Testing : NACE MR0175, H2 SERVICE, OXYGEN SERVICE, CRYO SERVICE, etc.
Dimensions : All Pipes is manufactured and inspected/tested to the relevant standards including ASTM, ASME and API etc.

904L is a non-settled low carbon high composite austenitic stainless steel. The expansion of copper to this evaluation issues it incredibly enhanced imperviousness to solid diminishing acids, especially sulphuric corrosive. It is additionally exceedingly impervious to chloride assault - both setting/ cleft erosion and anxiety consumption splitting. This evaluation is non-attractive in all conditions and has magnificent weld ability and formability. The austenitic structure additionally gives this evaluation magnificent sturdiness, even down to cryogenic temperatures. 904L has exceptionally considerable substance of the high cost fixings nickel and molybdenum. A large portion of the applications in which this evaluation has already performed well can now be satisfied at lower cost by duplex stainless steel 2205 (S31803 or S32205), so it is utilized less ordinarily than as a part of the past.

Erosion Resistance :

Albeit initially created for its imperviousness to sulphuric corrosive it additionally has a high imperviousness to an extensive variety of situations. A PRE of 35 shows that the material has great imperviousness to warm ocean water and other high chloride situations. High nickel substance brings about a vastly improved imperviousness to push erosion breaking than the standard austenitic evaluations. Copper adds imperviousness to sulphuric and other lessening acids, especially in the extremely forceful "mid fixation" range.

In many situations 904L has a consumption execution moderate between the standard austenitic evaluations 316L and the much alloyed 6% molybdenum and comparative "super austenitic" grades.

In forceful nitric corrosive 904L has less resistance than without molybdenum evaluations, for example, 904LL and 310L.

For most extreme anxiety erosion splitting resistance in discriminating situations the steel ought to be arrangement treated after frosty work.

Heat Resistance

Great imperviousness to oxidation, yet like other profoundly alloyed evaluations experiences auxiliary shakiness (precipitation of weak stages, for example, sigma) at hoisted temperatures. 904L ought not to be utilized above around 400°C.

Heat Treatment

Arrangement Treatment (Annealing) - warmth to 1090-1175°C and cool quickly. This evaluation can't be solidified by warm treatment.


904L can be effectively welded by all standard techniques. Care needs to be taken as this evaluation sets completely austenitic, so is defenseless to hot splitting, especially in compelled weld-elements. No preheat ought to be utilized and as a part of most cases post weld heat treatment is likewise not needed. AS 1554.6 prequalifies Grade 904L poles and anodes for welding of 904L.


904L is a high immaculateness, low sulfur grade, and accordingly won't machine well. In spite of this the evaluation can be machined utilizing standard strategies.

Twisting to a little sweep is promptly completed. Much of the time this is performed chilly. Consequent toughening is for the most part not needed, in spite of the fact that it ought to be considered if the creation is to be utilized as a part of a situation where extreme anxiety consumption breaking conditions are anticipated.


Standard 904L
UNS N08904
Werkstoff Nr. 1.4539

Chemical Composition

Alloy 904L
Ni 23 – 28
Mo 4 – 5
Cr 19 – 23
Cu 1 – 2
C 0.02 max
Mn 2.0 max
Si 1.0 max
P 0.045 max
S 0.035 max

Mechanical & Physical Properties – 904L

Density 8.05 g/cm3 Melting Point 1350 °C (2460 °F) Tensile Strength Psi – 71000 , MPa – 490 Yield Strength (0.2%Offset) Psi – 32000 , MPa – 220 Elongation 35 %

Pipe Type NB Sizes Sch 5 Sch 10 Sch 40 Sch 80 Sch 160
904L Stainless Steel Seamless Pipes 1/8″
904L Stainless Steel Seamless Pipes 1/4″
904L Stainless Steel Seamless Pipes 3/8″
904L Stainless Steel Seamless Pipes 1/2″
904L Stainless Steel Seamless Pipes 3/4″
904L Stainless Steel Seamless Pipes 1″
904L Stainless Steel Seamless Pipes 1 1/4″
904L Stainless Steel Seamless Pipes 1 1/2″
904L Stainless Steel Seamless Pipes 2″
904L Stainless Steel Seamless Pipes 2 1/2″
904L Stainless Steel Seamless Pipes 3″
904L Stainless Steel Seamless Pipes 4″
904L Stainless Steel Seamless Pipes 5″
904L Stainless Steel Seamless Pipes 6″

Applications :

• Typical applications include

• Processing plant for sulphuric, phosphoric and acetic acids

• Pulp and paper processing

• Components in gas scrubbing plants

• Seawater cooling equipment

• Oil refinery components

• Wires in electrostatic precipitators