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304 Stainless Steel Pipes and Tubes

18/8 Stainless steel, European norm 1.4301, is the most common Stainless Steel

304 Stainless Pipe and Tube

TP304 · UNS S30400 · 18Cr-8Ni (approx. 18–20% Cr, 8–10.5% Ni)


304 stainless steel pipes and tubes

Savoy Piping Inc. supplies 304 — the standard 18/8 austenitic grade for general corrosive service, food/pharma hygiene, and fabrication-friendly piping.

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

Also see: Stainless steel pipe & tube hub · Buttweld fittings · Flanges · Materials hub.

What is 304?

304 (UNS S30400): 18Cr-8Ni (approx. 18–20% Cr, 8–10.5% Ni). Mechanical guide: min tensile ~515 MPa (75 ksi), min yield ~205 MPa (30 ksi) for common A312 pipe grades — confirm PO / ASME SA-312.

Typical applications

  • Food, dairy, brewery and pharmaceutical process lines
  • Architectural / structural stainless piping where chloride load is moderate
  • Chemical handling of mild corrosives and clean utilities
  • Cryogenic and low-temperature services that benefit from austenitic toughness

Selection guidance

Choose 304 for general corrosion resistance and formability. Prefer 304L for heavy welded sections; 304H when elevated-temperature carbon is required; move to 316/316L for chloride / marine exposure.

304 vs 316: molybdenum in 316 improves pitting resistance in chlorides. 304 vs 304L: 304L (≤0.030% C) reduces sensitization risk in as-welded heavy gauge.

Which 304 product form?

ChooseWhenWatch-outs
A312 seamless pipeProcess / pressure piping by NPS + scheduleUse welded/EFW when size or cost drives it
A213 / A269 tubeHeat exchanger / condenser / instrument OD×wallDo not order tube as pipe schedule casually
A358 EFWLarge diameter welded stainlessConfirm class / weld finish on datasheet

Copy-paste RFQ

304 stainless — product form: A312 pipe / A213 tube / A269 tube / A358 EFW Grade: 304 / 304L / dual-cert ____ Size: ____ Wall/Sch: ____ Length: ____ Qty: ____ MTC: 3.1 / 3.2 Destination: ____

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

304 Stainless Steel Pipes and Tubes range

304 Stainless Steel Pipe & Tubes Specification ASTM A269, ASTM A213, ASTM A312, ASME SA269, ASME SA213, ASME SA312
304 Stainless Steel Pipe and duplex steel & Tubes Grades 202,Steel 304 , 304L, 304H, 304LN, 309S, 310S, 316, 316L, 316H, 316Ti, 316LN, 317L, 321, 321H, 347, 347H, 904L, SMO 254, ALLOY 254, 6MO, 6MOLY, UNS S31254 ETC.
304 Stainless Steel Pipe & Tubes Type Seamless / Welded / ERW / EFW / Cold Draw / Hot Finish / Cold Finish
304 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
304 Stainless Steel Pipe & Tubes Wall Thickness Schedule 10 to Schedule 160 (3 mm to 100 mm Thickness)
304 Stainless Steel Pipe & Tubes Length 01 Meter to 12.5 Meters, Single Random Length, Double Random Length And Customize Size.
304 Stainless Steel Pipe & Tubes Ends Plain Ends / Beveled Ends
304 Stainless Steel Pipe & Tubes Delivery Conditions As Rolled, Formed, Stress Relieved, Annealed, Hardened, Tempered, Cold Draw
304 Stainless Steel Pipe & Tubes Coating Electropolish, Mechanical Polish, Satin Finish, PassivateD
304 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
304 Stainless Steel Pipe & Tubes Dimension All pipes tubes Is Manufactured and Inspected / Tested to the Relevant standards includingASTM And ASME
304 Stainless Steel Pipe & Tubes Value Added Services Draw / Expansion / Machining / Sand Blasting / Shot Blasting / Heat Treatment
304 Stainless Steel Pipe & Tubes Packaging Loose / Bundle / Wooden Pallet / Wooden box-a / Plastic Cloth Wraps / Plastic End Caps / Beveled Protector
304 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
304 Stainless Steel Pipe & Tubes Material Test Certificate Manufacturer 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 304 Stainless Steel Pipes and Tubes

The Chemical Composition of grade 304 Stainless Steel is outlined in the following table

Grade C Mn Si P S Cr Mo Ni N
304 min. - - - - - 18.0 - 8.0 -
max. 0.08 2.0 1.00 0.045 0.030 20.0 11.0 0.10
304L min. - - - - - 18.0 - 8.0 -
max. 0.035 2.0 1.00 0.045 0.030 20.0 12.0 0.10
304H min. 0.04 - - - - 18.0 - 8.0 -
max. 0.10 2.0 1.00 0.045 0.030 20.0 11.0

Mechanical Properties of 304 Stainless Steel Pipes and Tubes

The Mechanical Properties of grade Stainless Steel 304 Pipe 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) max Brinell (HB) max
304 515 205 40 92 201
304L 485 170 40 92 201
304H 515 205 40 92 201
304H also has a requirement for a grain size of ASTM No 7 or coarser.

304 Stainless Steel Pipes and Tubes Physical Properties

Physical properties of 304 grade stainless steel in the annealed condition


Grade		 Density(kg/m3) Elastic Modulus (GPa) Mean Coefficient of Thermal Expansion (μm/m/°C) Thermal Conductivity (W/m.K) Specific Heat 0-100°C (J/kg.K) Electrical Resistivity (nΩ.m)
0-100°C 0-315°C 0-538°C at 100°C at 500°C
304/L/H 8000 193 17.2 17.8 18.4 16.2 21.5 500 720

Specification Comparison For Grade 304 Stainless Steel Pipes and Tubes

Grade Specifications for 304 grade stainless steel

Grade UNS No Old British Euronorm Swedish SS Japanese JIS
BS En No Name
304 S30400 304S31 58E 1.4301 X5CrNi18-10 2332 SUS 304
304L S30403 304S11 - 1.4306 X2CrNi19-11 2352 SUS 304L
304H S30409 304S51 - 1.4948 X6CrNi18-11 - -
These comparisons are approximate only. The list is intended as a comparison of functionally similar materials not as a schedule of contractual equivalents. If exact equivalents are needed original specifications must be consulted.

304 Stainless Steel Pipes and Tubes Applications

The grade 304 steel can be made into plates, sheets, and coils to be used in the following:

  • Food processing equipment, particularly in beer brewing, milk processing & wine making.
  • Kitchen benches, sinks, troughs, equipment and appliances
  • Architectural panelling, railings & trim
  • Chemical containers, including for transport
  • Heat Exchangers
  • Woven or welded screens for mining, quarrying & water filtration
  • Threaded fasteners
  • Springs

Frequently asked questions — 304 Pipe & Tube

What is 304?

304 (UNS S30400) is the standard 18/8 austenitic grade for general corrosive service, food/pharma hygiene, and fabrication-friendly piping. Chemistry: 18Cr-8Ni (approx. 18–20% Cr, 8–10.5% Ni).

Which product specs?

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

Typical strength?

min tensile ~515 MPa (75 ksi), min yield ~205 MPa (30 ksi) for common A312 pipe grades — confirm PO / ASME SA-312

Related grades?

304 vs 316: molybdenum in 316 improves pitting resistance in chlorides. 304 vs 304L: 304L (≤0.030% C) reduces sensitization risk in as-welded heavy gauge.

Export & documentation

We supply this product for domestic and export projects with mill test certificates (EN 10204 3.1 standard; 3.2 / TPI on request). Include destination, preferred Incoterms and any inspection body on the RFQ.