904L — pick the product form

ChooseWhenWatch-outs
A312 seamless pipeProcess piping NPS + scheduleState seamless vs welded
A213 / A269 tubeHX / instrument OD×wallDo not mix pipe schedules casually
SS hubBrowse related gradesConfirm dual-cert on MTC

Copy-paste RFQ

904L stainless — form: A312 pipe / A213 tube / A269 tube Size: ____ Wall/Sch: ____ Qty: ____ MTC: 3.1/3.2 Destination: ____

Email sales@savoypipinginc.com with destination and any IBR / NACE / TPI notes.

904L Stainless Pipe and Tube

TP904L · UNS N08904 · high Ni-Cr-Mo-Cu superaustenitic (≈ 20Cr-25Ni-4.5Mo-Cu)


stainless steel Pipes

Savoy Piping Inc. supplies 904L — a superaustenitic grade bridging 316L and nickel alloys for strong resistance to reducing acids and chlorides.

Grade hub · A312 Seamless · A312 Welded · A213 · A269 · A358 EFW · SS hub

What is 904L?

904L (UNS N08904): high Ni-Cr-Mo-Cu superaustenitic (≈ 20Cr-25Ni-4.5Mo-Cu). Mechanical guide: per SA-312 / PO for 904L — confirm edition.

Typical applications

  • Sulphuric / phosphoric acid piping
  • Seawater and chloride process lines
  • Pulp & paper and chemical scrubber systems

Selection guidance

Use 904L when 316L/317L are inadequate but full nickel alloy is not justified. Compare with 254 SMO / 6Mo and duplex/super duplex on PREN and cost.

904L vs 316L: far higher alloy content. 904L vs 2205: different strength/PREN/fabrication trade-offs.

904L Stainless Steel Pipes and Tubes range

904L Stainless Steel Pipe & Tubes Specification ASTM A269, ASTM A213, ASTM A312, ASME SA269, ASME SA213, ASME SA312
904L Stainless Steel Pipe & Tubes Grades 202, 304, 304L, 304H, 304LN, 309S, 310S, 316, 316L, 316H, 316Ti, 316LN, 317L, 321, 321H, 347, 347H, Steel 904L, SMO 254, ALLOY 254, 6MO, 6MOLY, UNS S31254 ETC.
904L Stainless Steel Pipe & Tubes Type Seamless / Welded / ERW / EFW / Cold Draw / Hot Finish / Cold Finish
904L Stainless Steel Pipe & Tubes Outer Diameter Size Seamless - 1/2" NB TO 18" NB
Welded / ERW- 1" NB TO 16" NB
EFW - 8" NB TO 110" NB
904L Stainless Steel Pipe & Tubes Wall Thickness Schedule 10 to Schedule 160 (3 mm to 100 mm Thickness)
904L Stainless Steel Pipe & Tubes Length 01 Meter to 12.5 Meters, Single Random Length, Double Random Length And Customize Size.
904L Stainless Steel Pipe & Tubes Ends Plain Ends / Beveled Ends
904L Stainless Steel Pipe & Tubes Delivery Conditions As Rolled, Formed, Stress Relieved, Annealed, Hardened, Tempered, Cold Draw
904L Stainless Steel Pipe & Tubes Coating Electropolish, Mechanical Polish, Satin Finish, Passivate
904L Stainless Steel Pipe & Tubes Other Testing Product Analysis, Transverse Tension Test, Flattening Test, Etching Test, Radiograph HIC Examination, Stabilizing Heat Treatment, Intergranular Corrosion Test, Weld Decay Test, Magnetic Particle Detection, Grain Size Test, NACE 0175, Dual Grade, PWHT (POST WELD HEAT TREATMENT), Flare Test, Bend Test, Hardness Test, Tensile Test etc
904L Stainless Steel Pipe & Tubes Dimension All Pipes Tube Is Manufactured and Inspected / Tested to the Relevant standards includingASTM And ASME
904L Stainless Steel Pipe & Tubes Value Added Services Draw / Expansion / Machining / Sand Blasting / Shot Blasting / Heat Treatment
904L Stainless Steel Pipe & Tubes Packaging Loose / Bundle / Wooden Pallet / Wooden box-a / Plastic Cloth Wraps / Plastic End Caps / Beveled Protector
904L Stainless Steel Pipe & Tubes Shipment & Transportation By Road - Truck / Train, By Sea - Break-bulk Conventional Vessel / FCL (Full Container Load) / LCL (Less Container Load) / 20 Feet Container / 40 Feet Container / 4 Feet Container / High Cube Container / Open Top Container, By Air - Freighter Civil Passenger and Cargo Planes
904L Stainless Steel Pipe & Tubes Material Test Certificate Stainless Steel Pipe Manufacturers Test Certificate As Per EN10204 3.1, 3.2 / Laboratory Test Certificate From NABL Approved Lab. / Under Third Party Inspection Agency Like SGS, TUV, DNV, LLOYDS, ABS ETC

Chemical Composition of 904L Stainless Steel Pipes and Tubes

The Chemical Composition of grade 904L Stainless Steel is outlined in the following table

Grade C Mn Si P S Cr Mo Ni Cu
904L min.
max.
-
0.02
-
2
-
1
-
0.04
-
0.035
19
23
4
5
23
28
1
2

Mechanical Properties of 904L Stainless Steel Pipes and Tubes

The Mechanical Properties of grade 904L Stainless Steel are displayed in the following table.

Grade Tensile Strength (MPa) min Yield Strength 0.2% Proof (MPa) min Elongation (% in 50mm) min Hardness
Rockwell B (HR B) Brinell (HB)
904L 490 220 35 70-90 typical 150

904L Stainless Steel Pipes and Tubes Physical Properties

Physical properties of 904L grade stainless steel and Corten Steel in the annealed condition

Grade Density
(kg/m
3)
Elastic Modulus
(GPa)
Mean Co-eff of Thermal Expansion (µm/m/°C) Thermal Conductivity
(W/m.K)
Specific Heat 0-100°C
(J/kg.K)
Elec Resistivity
(nΩ.m)
0-100°C 0-315°C 0-538°C At 20°C At 500°C
904L 8000 190 15 - - 11.5 - 500 952

Specification Comparison For Grade 904L Stainless Steel Pipes and Tubes

Grade Specifications for 904L grade stainless steel

Grade UNS No Old British Euronorm Swedish SS Japanese JIS
BS En No Name
904L N08904 904S13 - 1.4539 X1NiCrMoCuN25-20-5 2562 -

Frequently asked questions — 904L Pipe & Tube

What is 904L?

904L (UNS N08904) is a superaustenitic grade bridging 316L and nickel alloys for strong resistance to reducing acids and chlorides. Chemistry: high Ni-Cr-Mo-Cu superaustenitic (≈ 20Cr-25Ni-4.5Mo-Cu).

Which product specs?

Pipe A312 / A358 EFW; tube A213 / A269 (and A249 welded where specified).

Typical strength?

per SA-312 / PO for 904L — confirm edition

Related grades?

904L vs 316L: far higher alloy content. 904L vs 2205: different strength/PREN/fabrication trade-offs.

Export & documentation

We supply this product for domestic and export projects with MTC (EN 10204 3.1 standard; 3.2 / TPI on request). Include destination, Incoterms and inspection needs on the RFQ.