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Stainless Steel

Stainless steel for piping and pressure systems

Austenitic, stabilised, super austenitic, duplex, super duplex, martensitic and precipitation-hardening stainless steels for pipe, flanges and fittings.

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Published grade data

Stainless Steel - published data sheets
GradeUNSWerkstoff Nr.Key strength figureData sheet
254SMO / Alloy 254 (6 Mo Super Austenitic)S312541.4547650 MPa / 94 ksiOpen data sheet
Duplex Stainless Steel 2205S32205 / S318031.4462620 MPa / 90 ksiOpen data sheet
Lean Duplex 2101S321011.4162650 MPa / 94 ksiOpen data sheet
Lean Duplex 2304S323041.4362600 MPa / 87 ksiOpen data sheet
Stainless 13-8MoS13800-1550 MPa / 225 ksiOpen data sheet
Stainless 15-5PHS155001.45451310 MPa / 190 ksiOpen data sheet
Stainless 17-4PHS174001.45421310 MPa / 190 ksiOpen data sheet
Stainless 253 MAS308151.4835600 MPa / 87 ksiOpen data sheet
Stainless 304 / 304LS30400 / S304031.4301 / 1.4307515 MPa / 75 ksi (304) · 485 MPa / 70 ksi (304L)Open data sheet
Stainless 304HS304091.4948515 MPa / 75 ksiOpen data sheet
Stainless 309SS309081.4833515 MPa / 75 ksiOpen data sheet
Stainless 310SS310081.4845515 MPa / 75 ksiOpen data sheet
Stainless 316S316001.4401515 MPa / 75 ksiOpen data sheet
Stainless 316LS316031.4404485 MPa / 70 ksiOpen data sheet
Stainless 316TiS316351.4571515 MPa / 75 ksiOpen data sheet
Stainless 317LS317031.4438515 MPa / 75 ksiOpen data sheet
Stainless 321S321001.4541515 MPa / 75 ksiOpen data sheet
Stainless 347S347001.4550515 MPa / 75 ksiOpen data sheet
Stainless 410S410001.4006485 MPa / 70 ksiOpen data sheet
Stainless 420S420001.4021 / 1.4028655 MPa / 95 ksiOpen data sheet
Stainless 440CS440041.4125758 MPa / 110 ksiOpen data sheet
Stainless Steel 316 / 316LS31600 / S316031.4401 / 1.4404515 MPa / 75 ksiOpen data sheet
Stainless Steel 321 / 347S32100 / S347001.4541 / 1.4550515 MPa / 75 ksiOpen data sheet
Stainless Steel 904L (N08904)N089041.4539490 MPa / 71 ksiOpen data sheet
Super Duplex 32760 (Zeron 100)S327601.4501750 MPa / 109 ksiOpen data sheet
Super Duplex Stainless Steel 2507S327501.4410800 MPa / 116 ksiOpen data sheet

Grades in this family

  • 254SMO / Alloy 254 (6 Mo Super Austenitic)

    S31254

    254SMO · UNS S31254 · W. Nr. 1.4547 · ASTM A182 F44 · 015Cr20Ni18Mo6CuN Typical applications: Seawater cooling, condensers, heat exchangers and piping on ships and platforms.

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  • Duplex Stainless Steel 2205

    S32205 / S31803

    Duplex 2205 · UNS S32205 / S31803 · W. Nr. 1.4462 · 022Cr23Ni5Mo3N · F51 / F60 Typical applications: Chemical tanker cargo tanks, pipes and cargo handling systems.

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  • Lean Duplex 2101

    S32101

    Lean Duplex 2101 · UNS S32101 · W. Nr. 1.4162 Typical applications: Water and wastewater treatment structures and piping.

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  • Lean Duplex 2304

    S32304

    Lean Duplex 2304 · UNS S32304 · W. Nr. 1.4362 Typical applications: Water, desalination and brine handling piping.

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  • Stainless 13-8Mo

    S13800

    Stainless 13-8Mo · UNS S13800 Typical applications: Aerospace fittings, actuators and structural hardware.

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  • Stainless 15-5PH

    S15500

    Stainless 15-5PH · UNS S15500 · W. Nr. 1.4545 Typical applications: Aerospace structural parts and landing gear components.

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  • Stainless 17-4PH

    S17400

    Stainless 17-4PH · UNS S17400 · W. Nr. 1.4542 Typical applications: Valve stems, shafts, gears and pump components.

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  • Stainless 253 MA

    S30815

    Stainless 253 MA · UNS S30815 · W. Nr. 1.4835 Typical applications: Kiln furniture, burner nozzles and radiant tubes.

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  • Stainless 304 / 304L

    S30400 / S30403

    Stainless 304 / 304L · UNS S30400 / S30403 · W. Nr. 1.4301 / 1.4307 Typical applications: General chemical, food, dairy and beverage process piping.

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  • Stainless 304H

    S30409

    Stainless 304H · UNS S30409 · W. Nr. 1.4948 Typical applications: Superheater and reheater steam piping.

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  • Stainless 309S

    S30908

    Stainless 309S · UNS S30908 · W. Nr. 1.4833 Typical applications: Furnace parts, kiln liners and heat treatment fixtures.

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  • Stainless 310S

    S31008

    Stainless 310S · UNS S31008 · W. Nr. 1.4845 Typical applications: Furnace muffles, retorts, annealing covers and radiant tubes.

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  • Stainless 316

    S31600

    Stainless 316 · UNS S31600 · W. Nr. 1.4401 Typical applications: Chemical, petrochemical and pharmaceutical process piping.

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  • Stainless 316L

    S31603

    Stainless 316L · UNS S31603 · W. Nr. 1.4404 Typical applications: Welded chemical, marine and pharmaceutical piping.

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  • Stainless 316Ti

    S31635

    Stainless 316Ti · UNS S31635 · W. Nr. 1.4571 Typical applications: Chemical and petrochemical equipment held at 550 - 800 °C.

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  • Stainless 317L

    S31703

    Stainless 317L · UNS S31703 · W. Nr. 1.4438 Typical applications: Flue gas desulphurisation absorbers and outlet ducting.

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  • Stainless 321

    S32100

    Stainless 321 · UNS S32100 · W. Nr. 1.4541 Typical applications: Aircraft exhaust systems and expansion joints.

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  • Stainless 347

    S34700

    Stainless 347 · UNS S34700 · W. Nr. 1.4550 Typical applications: Refinery heater, reformer and coker piping.

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  • Stainless 410

    S41000

    Stainless 410 · UNS S41000 · W. Nr. 1.4006 Typical applications: Valve trim, stems, seats and gate components.

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  • Stainless 420

    S42000

    Stainless 420 · UNS S42000 · W. Nr. 1.4021 / 1.4028 Typical applications: Cutlery, surgical and dental instruments.

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  • Stainless 440C

    S44004

    Stainless 440C · UNS S44004 · W. Nr. 1.4125 Typical applications: Ball bearing races, balls and rolling elements.

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  • Stainless Steel 316 / 316L

    S31600 / S31603

    316 · UNS S31600 · W. Nr. 1.4401 · 316L · UNS S31603 · W. Nr. 1.4404 · 022Cr17Ni12Mo2 Typical applications: General chemical, petrochemical and process industry piping.

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  • Stainless Steel 321 / 347

    S32100 / S34700

    321 · UNS S32100 · W. Nr. 1.4541 · 347 · UNS S34700 · W. Nr. 1.4550 · 06Cr18Ni11Ti / 06Cr18Ni11Nb Typical applications: Refinery heater tubes, radiant coils and process furnace piping.

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  • Stainless Steel 904L (N08904)

    N08904

    904L · UNS N08904 · W. Nr. 1.4539 · 015Cr20Ni25Mo4.5Cu · 2RK65 Typical applications: Sulphuric acid handling, pickling plants and acid recovery systems.

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  • Super Duplex 32760 (Zeron 100)

    S32760

    Super Duplex 32760 (Zeron 100) · UNS S32760 · W. Nr. 1.4501 Typical applications: Subsea manifolds, flowlines and umbilicals.

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  • Super Duplex Stainless Steel 2507

    S32750

    Super duplex 2507 · UNS S32750 · W. Nr. 1.4410 · 022Cr25Ni7Mo4N · ASTM A182 F53 Typical applications: Subsea umbilicals, flowlines, manifolds and Christmas tree piping.

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Available product forms

  • Forged flanges to ASME B16.5 and B16.47
  • Seamless pipe and tube to the applicable ASTM / ASME pipe specification
  • Butt weld elbows to ASME B16.9 and MSS SP-43
  • Tees, reducers, caps and stub ends to ASME B16.9

Common questions about stainless steel

Which stainless steel should I choose for my application?
Start from the actual stream chemistry and temperature. Compare PREN for chloride duty, maximum service temperature for hot duty, and check NACE MR0175 listing if H2S is present. Our engineers will shortlist candidates once you share the duty conditions.
Can you supply mixed sizes and grades in one shipment?
Yes. We routinely consolidate complete piping packages with one documentation set, which reduces both freight cost and administrative effort for the receiving team.
What certificate do I receive?
Every item carries a heat-specific EN 10204 3.1 certificate with ladle analysis, mechanical properties, heat treatment records and NDT results. A third party test report from SGS is available on request.

Ready to specify your alloy?

Send us your drawing, material specification and quantity. You receive a formal quotation within 24 hours, including melting route, heat treatment, testing scope and certificate format.

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