Stainless Steel S32205
UNS S32205 · EN 1.4462, X2CrNiMoN22-5-3 · GB 022Cr23Ni5Mo3N
S32205 (1.4462, X2CrNiMoN22-5-3, 2205) is the workhorse 22Cr-5Ni-3Mo-N duplex stainless steel, with a balanced ferrite-austenite structure, nitrogen alloying and broad ASTM/EN coverage.
Reference datasheet — S32205 is not in the instant-quote catalog. Upload your part and an engineer will quote it in this grade or suggest the closest stocked equivalent.
Values for the SA condition
S32205 tempers and conditions
S32205 is supplied in 4 conditions, soft to hard. SA is the default FabDigit quotes; the values on this page are for it.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Hot Finished bar / forging, solution annealed | Bars, forged flanges and valve bodies per ASTM A276/A182 F51. | 520 | 760 | 28 | 24 HRC | 2.2 % IACS |
SADefault Solution Annealed | Standard supply condition for plate, sheet, pipe and bar — best combination of corrosion resistance and toughness. | 550 | 790 | 30 | 25 HRC | — |
Cold drawn | Tight-tolerance shafting and fastener stock with raised strength and reduced ductility. | 700 | 880 | 20 | 30 HRC | 2.2 % IACS |
Cold worked | Springs, wire rope and fasteners where strength matters more than toughness or formability. | 950 | 1,100 | 10 | 35 HRC | 2.2 % IACS |
Supply forms, finishes and certifications
Ways S32205 is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
SMLS-SA | Seamless pipe/tube, solution annealed | Supply form |
WLD-SA | Welded pipe/tube, solution annealed | Supply form |
2B | Cold Rolled, Annealed, Pickled and Skin-passed sheet | Surface finish |
HRAP | Hot Rolled, Annealed and Pickled plate | Surface finish |
What is S32205?
S32205 (1.4462, X2CrNiMoN22-5-3, 2205) is the workhorse 22Cr-5Ni-3Mo-N duplex stainless steel, with a balanced ferrite-austenite structure, nitrogen alloying and broad ASTM/EN coverage. It gives austenitic-level corrosion resistance with roughly double the yield strength — 550 MPa yield, 790 MPa tensile, 30% elongation and about 260 HB (25 HRC) — in solution-annealed plate, HRAP and 2B sheet, hot-finished and cold-drawn bar, forgings, and seamless or welded pipe. Service is limited to about 300 °C by sigma-phase and 475 °C embrittlement, and machining is slower than 316L. For higher chloride pitting resistance, step up to S32750. S32205 has a density of 7.8 g/cm³ (0.282 lb/in³), heavier than 50% of stainless steel grades. It melts at 1,420°C (2,588 °F). S32205 has a yield strength of 550 MPa (79.8 ksi) and a tensile strength of 790 MPa (115 ksi) — stronger than 83% of stainless steel grades. Elongation at break is 30% and the elastic modulus is 200 GPa (29 Msi).
What is S32205 used for?
- oil and gas piping
- chemical process vessels
- desalination equipment
- marine structures
Advantages
- Good corrosion resistance — 78/100, better than 84% of stainless steel grades
- High strength — 550 MPa (79.8 ksi), better than 83% of stainless steel grades
Limitations
- Limited service temperature — 300°C (572 °F), worse than 90% of stainless steel grades
S32205 properties
Typical room-temperature values for S32205-SA; bars are the position among stainless steel grades.
Physical3
S32205 has a density of 7.8 g/cm³ (0.282 lb/in³), heavier than 50% of stainless steel grades. It melts at 1,420°C (2,588 °F).
Mechanical16
S32205 has a yield strength of 550 MPa (79.8 ksi) and a tensile strength of 790 MPa (115 ksi) — stronger than 83% of stainless steel grades. Elongation at break is 30% and the elastic modulus is 200 GPa (29 Msi).
Thermal6
S32205 is rated for continuous service to 300°C (572 °F). It conducts heat at 15 W/m·K (8.67 BTU/hr·ft·°F), worse than 59% of stainless steel grades. Thermal expansion is 13.2 µm/m·K (7.33 µin/in·°F).
Electrical3
S32205 conducts electricity at 2.2 % IACS, worse than 61% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is very good (78/100), better than 84% of stainless steel grades.
Sustainability4
Producing a kilogram of S32205 takes about 57 MJ of energy and emits 5 kg of CO₂ — more than 62% of stainless steel grades. Typical recycled content is 65%.
Manufacturability7
S32205's machinability is poor (30/100, worse than 70% of stainless steel grades); weldability very good (70/100); formability fair (45/100).
Common Calculations5
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Strength versus weight in the stainless steel family
Yield strength against density for every stainless steel grade FabDigit runs. S32205 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with S32205
Is S32205 easy to machine?
Cuts like a work-hardening, high-strength stainless: use rigid setups, ~60–70% of 316L speeds, heavy positive feed to stay under the hardened skin, sharp coated carbide and copious coolant.
Can S32205 be welded?
Readily welded by GTAW/GMAW/SMAW with over-alloyed 2209/E2209 filler; keep heat input roughly 0.5–2.5 kJ/mm and interpass below 150 °C, avoid autogenous welds without post-weld anneal to preserve 50/50 ferrite-austenite.
Can S32205 be formed, bent or molded?
Cold forming needs roughly twice the force of 304 with large springback allowance; hot form at 1000–1200 °C followed by full solution anneal and quench — never finish between 300 and 950 °C.
S32205 chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| Clow carbon for weldability | ≤ 0.03 | 0.02 |
| Si | ≤ 1 | 0.4 |
| Mn | ≤ 2 | 1.4 |
| P | ≤ 0.03 | |
| S | ≤ 0.02 | |
| Cr | 22 – 23 | 22.5 |
| Ni | 4.5 – 6.5 | 5.6 |
| Mo | 3 – 3.5 | 3.2 |
| Naustenite stabiliser, raises PREN | 0.14 – 0.2 | 0.17 |
| Fe | balance |
What surface finishes work on S32205?
Pickle and passivate (HNO₃-HF) after welding or use mechanical descaling then passivation; electropolishing gives the best pitting performance; not anodizable.
Surface treatments FabDigit runs on stainless steel parts — pick them in the quote configurator or call them out on the drawing. Each links to its datasheet in the surface-finish library (thickness, specs, call-out, material verdicts).
Passivation
Organic Coating
Thermal Spray
Equivalent designations
Standards and trade names that resolve to Stainless Steel S32205 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
How much does S32205 cost?
S32205 is a premium-cost stainless steel ($$$), cheaper than about 51% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
S32205 — frequently asked
What is S32205 used for?
S32205 is typically used for oil and gas piping, chemical process vessels, desalination equipment and marine structures. In short: standard workhorse duplex; double the yield of 316L; chloride SCC resistant.
What is the yield strength of S32205?
S32205 has a typical yield strength of 550 MPa (79.8 ksi) and a tensile strength of 790 MPa (115 ksi) — stronger than 83% of stainless steel grades. Strength varies by condition: see the 4 listed tempers.
Is S32205 easy to machine?
Not especially — machinability is rated poor (30/100, worse than 70% of stainless steel grades). Cuts like a work-hardening, high-strength stainless: use rigid setups, ~60–70% of 316L speeds, heavy positive feed to stay under the hardened skin, sharp coated carbide and copious coolant.
Can S32205 be welded?
Yes — weldability is rated very good (70/100). Readily welded by GTAW/GMAW/SMAW with over-alloyed 2209/E2209 filler; keep heat input roughly 0.5–2.5 kJ/mm and interpass below 150 °C, avoid autogenous welds without post-weld anneal to preserve 50/50 ferrite-austenite.
What surface finishes work on S32205?
Pickle and passivate (HNO₃-HF) after welding or use mechanical descaling then passivation; electropolishing gives the best pitting performance; not anodizable.
Can S32205 be formed, bent or molded?
Cold forming needs roughly twice the force of 304 with large springback allowance; hot form at 1000–1200 °C followed by full solution anneal and quench — never finish between 300 and 950 °C.
What is the maximum service temperature of S32205?
S32205 is rated for continuous use to about 300°C (572 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between S32205-SA and S32205-CW?
SA is the default condition — standard supply condition for plate, sheet, pipe and bar — best combination of corrosion resistance and toughness. CW: springs, wire rope and fasteners where strength matters more than toughness or formability. Yield strength is 550 MPa in SA versus 950 MPa in CW.
How much does S32205 cost?
S32205 is a premium-cost stainless steel ($$$), cheaper than about 51% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
Sources
- ASTM A240/A240M — Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip — ASTM International (2023)
- ASTM A790/A790M — Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe — ASTM International (2023)
- EN 10088-2 — Stainless steels, grade 1.4462 (X2CrNiMoN22-5-3) — CEN (2014)
- GB/T 4237 / GB/T 20878 022Cr23Ni5Mo3N — SAC (2015)
- Outokumpu Forta DX 2205 / 1.4462 datasheet — Outokumpu (2022)
- Sandvik SAF 2205 tube and bar datasheet — Alleima (Sandvik Materials Technology) (2021)
- ASM Handbook Vol. 1 — Properties and Selection: Irons, Steels, and High-Performance Alloys — ASM International (1990)
Property data is compiled from published supplier and standards handbooks and normalised for comparison; hardness values on non-Brinell scales are converted approximately for charting only. Manufacturability limits are FabDigit quote-engine defaults and may be relaxed by engineering review. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.