Stainless Steel S82441-SA (Solution annealed)
Heat-treated state · default condition
UNS S82441 · EN 1.4662, X2CrNiMoN25-6-3
Default supply condition for plate, sheet, bar, tube and fittings; best combination of ductility, toughness and corrosion resistance.
Values for the SA condition
Other S82441 tempers and conditions
S82441 is listed in 6 conditions; see the grade overview at S82441.
Compare all 6 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Forged, solution annealed (valve bodies, flanges) | For heavy sections and valve/pump forgings to ASTM A182-equivalent practice; check through-thickness ferrite balance and impact values. | 520 | 770 | 28 | 23 HRC | 2.2 % IACS |
Hot finished bar/section, solution annealed | Standard bar condition (ASTM A276/A479) for shafts, flanges and machined pressure parts. | 530 | 780 | 30 | 24 HRC | 2.2 % IACS |
SADefaultThis page Solution annealed | Default supply condition for plate, sheet, bar, tube and fittings; best combination of ductility, toughness and corrosion resistance. | 550 | 800 | 30 | 25 HRC | — |
As-welded deposit | Design condition for fabricated vessels welded with over-alloyed duplex filler and no post-weld solution treatment; toughness is the limiting property. | 560 | 780 | 24 | 26 HRC | 2.2 % IACS |
Cold rolled sheet/strip, annealed, 2B finish | Thin gauge (<6 mm) sheet for tank linings and formed parts; slightly higher strength and better surface than hot rolled. | 580 | 820 | 28 | 26 HRC | 2.2 % IACS |
Cold drawn | Choose for close-tolerance small-diameter bar and higher strength fasteners/shafts; toughness and formability drop. | 700 | 900 | 20 | 31 HRC | 2.2 % IACS |
What is S82441-SA?
S82441-SA is S82441 heat treated to SA — default supply condition for plate, sheet, bar, tube and fittings; best combination of ductility, toughness and corrosion resistance. S82441-SA has a yield strength of 550 MPa (79.8 ksi) and a tensile strength of 800 MPa (116 ksi) — stronger than 83% of stainless steel grades. Elongation at break is 30% and the elastic modulus is 200 GPa (29 Msi). S82441-SA has a density of 7.7 g/cm³ (0.278 lb/in³), lighter than 83% of stainless steel grades. It melts at 1,385°C (2,525 °F).
Advantages
- High strength — 550 MPa (79.8 ksi), better than 83% of stainless steel grades
Limitations
- Limited service temperature — 280°C (536 °F), worse than 96% of stainless steel grades
S82441-SA properties
Typical room-temperature values for S82441-SA; 12 are specific to this condition. Other listed values are S82441 reference data and may not represent this condition. Bars are the position among stainless steel grades.
Physical3
S82441-SA has a density of 7.7 g/cm³ (0.278 lb/in³), lighter than 83% of stainless steel grades. It melts at 1,385°C (2,525 °F).
Mechanical15
S82441-SA has a yield strength of 550 MPa (79.8 ksi) and a tensile strength of 800 MPa (116 ksi) — stronger than 83% of stainless steel grades. Elongation at break is 30% and the elastic modulus is 200 GPa (29 Msi).
Thermal6
S82441-SA is rated for continuous service to 280°C (536 °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 µm/m·K (7.22 µin/in·°F).
Electrical3
S82441-SA conducts electricity at 2.2 % IACS, worse than 61% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is very good (71/100), better than 70% of stainless steel grades.
Sustainability4
Producing a kilogram of S82441-SA takes about 55 MJ of energy and emits 5 kg of CO₂ — more than 50% of stainless steel grades. Typical recycled content is 60%.
Manufacturability7
S82441-SA's machinability is poor (30/100, worse than 70% of stainless steel grades); weldability very good (75/100); formability good (55/100).
Common Calculations5
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with S82441-SA
Is S82441 easy to machine?
Machine like 2205 but ~15% harder on tools: rigid setup, positive-rake coated carbide, low speed / heavy positive feed, flood coolant, avoid dwelling to prevent work hardening.
Can S82441 be welded?
Weldable by GTAW/GMAW/SMAW/SAW without preheat or PWHT; use over-alloyed 25.9.3/2209-type filler, heat input roughly 0.5–2.5 kJ/mm, interpass ≤150 °C, Ar+2%N2 backing to keep the weld ferrite near 30–60%.
Can S82441 be formed, bent or molded?
Cold forming needs ~2× the force and ~2× the springback of 304; hot form at 950–1150 °C followed by full solution anneal and quench — never stop-forming in the 300–1000 °C embrittlement range.
What surface finishes work on S82441?
Pickle (HNO3/HF) and passivate after hot work or welding to restore the passive film; electropolishing or mechanical polishing to Ra <0.8 µm markedly improves pitting resistance; not anodizable.
S82441 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 | ≤ 0.7 | 0.4 |
| Mnpartial nickel replacement, raises N solubility | 2.5 – 4 | 3 |
| P | ≤ 0.04 | 0.02 |
| S | ≤ 0.01 | 0 |
| Cr | 23 – 25 | 24 |
| Ni | 3 – 4.5 | 3.7 |
| Mo | 1 – 2 | 1.6 |
| Cu | 0.1 – 0.8 | 0.4 |
| Naustenite stabiliser, main contributor to PREN and strength | 0.2 – 0.3 | 0.27 |
| Fe | balance | — |
S82441-SA — frequently asked
What is S82441-SA used for?
S82441-SA is typically used for chemical tankers, pressure vessels, heat exchangers and marine process equipment. In short: between 2205 and 2507; PREN about 34; weldable without PWHT.
What is the yield strength of S82441-SA?
S82441-SA has a typical yield strength of 550 MPa (79.8 ksi) and a tensile strength of 800 MPa (116 ksi) — stronger than 83% of stainless steel grades. Strength varies by condition: see the 6 listed tempers.
Is S82441-SA easy to machine?
Not especially — machinability is rated poor (30/100, worse than 70% of stainless steel grades). Machine like 2205 but ~15% harder on tools: rigid setup, positive-rake coated carbide, low speed / heavy positive feed, flood coolant, avoid dwelling to prevent work hardening.
Can S82441-SA be welded?
Yes — weldability is rated very good (75/100). Weldable by GTAW/GMAW/SMAW/SAW without preheat or PWHT; use over-alloyed 25.9.3/2209-type filler, heat input roughly 0.5–2.5 kJ/mm, interpass ≤150 °C, Ar+2%N2 backing to keep the weld ferrite near 30–60%.
What surface finishes work on S82441-SA?
Pickle (HNO3/HF) and passivate after hot work or welding to restore the passive film; electropolishing or mechanical polishing to Ra <0.8 µm markedly improves pitting resistance; not anodizable.
Can S82441-SA be formed, bent or molded?
Cold forming needs ~2× the force and ~2× the springback of 304; hot form at 950–1150 °C followed by full solution anneal and quench — never stop-forming in the 300–1000 °C embrittlement range.
What is the maximum service temperature of S82441-SA?
S82441-SA is rated for continuous use to about 280°C (536 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between S82441-SA and S82441-CD?
SA is the default condition — default supply condition for plate, sheet, bar, tube and fittings; best combination of ductility, toughness and corrosion resistance. CD: choose for close-tolerance small-diameter bar and higher strength fasteners/shafts; toughness and formability drop. Yield strength is 550 MPa in SA versus 700 MPa in CD.
Sources
- ASTM A240/A240M — Chromium and Chromium-Nickel Stainless Steel Plate, Sheet and Strip (UNS S82441) — ASTM International (2023)
- EN 10088-2 / EN 10028-7 — Stainless steels, grade 1.4662 — CEN (2014)
- ASTM A789 / A790 — Duplex stainless steel tube and pipe — ASTM International (2021)
- Sandvik SAF 2404 duplex stainless steel datasheet — Alleima (formerly Sandvik Materials Technology) (2022)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels and High-Performance Alloys — ASM International (1990)
- Practical Guidelines for the Fabrication of Duplex Stainless Steels — IMOA / International Molybdenum Association (2014)
Property data is compiled from published supplier and standards handbooks and normalised for comparison. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.