Stainless Steel S82122
UNS S82122
S82122 is a close compositional variant of the S82121 lean duplex family, differing in trace element ranges to suit particular product forms and mill specifications.
Reference datasheet — S82122 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 Annealed condition
S82122 tempers and conditions
S82122 is supplied in 4 conditions, soft to hard. Annealed 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 |
|---|---|---|---|---|---|---|
AnnealedDefault solution annealed (~1020–1080 °C) and quenched | Standard supply condition for plate, pipe and bar: balanced 50/50 duplex structure with maximum toughness and corrosion resistance. | 520 | 720 | 30 | 22 HRC | — |
welded pipe/section, weld metal and HAZ as-deposited | Condition of welded pipe or fabricated joints not re-annealed; expect somewhat lower toughness and local corrosion resistance. | 520 | 720 | 22 | 23 HRC | 2.2 % IACS |
Cold drawn | Pick for shafts, fasteners and machined parts needing tight tolerance and higher yield strength. | 700 | 860 | 18 | 29 HRC | 2.2 % IACS |
Cold worked strip/tube, quarter-hard temper | Use where extra strength/spring-back is wanted in thin strip or tubing and elongation demand is modest. | 750 | 900 | 12 | 31 HRC | 2.2 % IACS |
Supply forms, finishes and certifications
Ways S82122 is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
2B | Cold rolled, annealed, pickled, lightly skin-passed sheet | Surface finish |
HRAP | HRAP | Surface finish |
What is S82122?
S82122 is a close compositional variant of the S82121 lean duplex family, differing in trace element ranges to suit particular product forms and mill specifications. Annealed material provides 520 MPa yield, 720 MPa tensile, 30% elongation and about 240 HB (22 HRC), supplied as hot-rolled annealed plate, 2B sheet, cold-drawn bar, quarter-hard cold-worked strip and as-welded tube. Corrosion resistance is rated 65/100 with a 300 °C maximum service temperature, and the two-phase structure is harder to cut and form than 304; S32205 remains the step-up grade. S82122 has a density of 7.75 g/cm³ (0.28 lb/in³), lighter than 65% of stainless steel grades. It melts at 1,420°C (2,588 °F). S82122 has a yield strength of 520 MPa (75.4 ksi) and a tensile strength of 720 MPa (104 ksi) — stronger than 79% of stainless steel grades. Elongation at break is 30% and the elastic modulus is 200 GPa (29 Msi).
What is S82122 used for?
- tanks
- structural fittings
- pressure vessels
- process equipment
Advantages
- Low embodied carbon — 3.6 kg CO₂/kg, better than 83% of stainless steel grades
- High strength — 520 MPa (75.4 ksi), better than 79% of stainless steel grades
Limitations
- Limited service temperature — 300°C (572 °F), worse than 90% of stainless steel grades
S82122 properties
Typical room-temperature values for S82122-Annealed; bars are the position among stainless steel grades.
Physical3
S82122 has a density of 7.75 g/cm³ (0.28 lb/in³), lighter than 65% of stainless steel grades. It melts at 1,420°C (2,588 °F).
Mechanical17
S82122 has a yield strength of 520 MPa (75.4 ksi) and a tensile strength of 720 MPa (104 ksi) — stronger than 79% of stainless steel grades. Elongation at break is 30% and the elastic modulus is 200 GPa (29 Msi).
Thermal5
S82122 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 µm/m·K (7.22 µin/in·°F).
Electrical3
S82122 conducts electricity at 2.2 % IACS, worse than 61% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is good (65/100), better than 56% of stainless steel grades.
Sustainability4
Producing a kilogram of S82122 takes about 53 MJ of energy and emits 3.6 kg of CO₂ — less than 67% of stainless steel grades. Typical recycled content is 65%.
Manufacturability6
S82122's machinability is poor (33/100, worse than 57% of stainless steel grades); weldability very good (70/100); formability good (55/100).
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. S82122 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with S82122
Is S82122 easy to machine?
Machine like 2205 but with ~20–30 % lower cutting speeds than 304: rigid setup, sharp coated carbide, heavy positive feed to cut through the work-hardened skin, generous flood coolant.
Can S82122 be welded?
GTAW/GMAW/SAW with 2209-type (or matching lean duplex) filler and N-bearing shielding gas; keep heat input ~0.5–1.5 kJ/mm, interpass below 150 °C, no preheat and no post-weld heat treatment unless full re-solution annealing is possible.
Can S82122 be formed, bent or molded?
Cold forms well but needs ~2× the press force of 304 with large springback allowance; hot form 950–1150 °C followed by solution annealing and quenching, and never work in the 300–950 °C embrittlement range.
S82122 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 |
|---|---|---|
| C | ≤ 0.04 | 0.02 |
| Si | ≤ 1 | 0.5 |
| Mnaustenite stabiliser replacing Ni; range per lean duplex registration | 1 – 2.5 | 1.8 |
| P | ≤ 0.04 | 0.03 |
| S | ≤ 0.02 | 0 |
| Cr | 20.5 – 21.5 | 21 |
| Nilean-Ni design | 1.3 – 1.8 | 1.5 |
| Mo | ≤ 0.6 | 0.3 |
| Cu | 0.5 – 1.5 | 0.9 |
| Nkey austenite stabiliser / strengthener | 0.15 – 0.2 | 0.17 |
| Febalance; composition band is the S82121/S82122 lean duplex family per ASTM A240 — verify against the current edition and mill spec | balance |
What surface finishes work on S82122?
Must be pickled/passivated after welding or hot work to remove heat tint and restore the passive film; takes mechanical and electropolishing well, no anodizing (not applicable to stainless steel).
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
How much does S82122 cost?
S82122 is a standard-cost stainless steel ($$), cheaper than about 71% 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.
S82122 — frequently asked
What is S82122 used for?
S82122 is typically used for tanks, structural fittings, pressure vessels and process equipment. In short: S82121 chemistry variant; lean duplex for tankage; 520 MPa annealed yield.
What is the yield strength of S82122?
S82122 has a typical yield strength of 520 MPa (75.4 ksi) and a tensile strength of 720 MPa (104 ksi) — stronger than 79% of stainless steel grades. Strength varies by condition: see the 4 listed tempers.
Is S82122 easy to machine?
Not especially — machinability is rated poor (33/100, worse than 57% of stainless steel grades). Machine like 2205 but with ~20–30 % lower cutting speeds than 304: rigid setup, sharp coated carbide, heavy positive feed to cut through the work-hardened skin, generous flood coolant.
Can S82122 be welded?
Yes — weldability is rated very good (70/100). GTAW/GMAW/SAW with 2209-type (or matching lean duplex) filler and N-bearing shielding gas; keep heat input ~0.5–1.5 kJ/mm, interpass below 150 °C, no preheat and no post-weld heat treatment unless full re-solution annealing is possible.
What surface finishes work on S82122?
Must be pickled/passivated after welding or hot work to remove heat tint and restore the passive film; takes mechanical and electropolishing well, no anodizing (not applicable to stainless steel).
Can S82122 be formed, bent or molded?
Cold forms well but needs ~2× the press force of 304 with large springback allowance; hot form 950–1150 °C followed by solution annealing and quenching, and never work in the 300–950 °C embrittlement range.
What is the maximum service temperature of S82122?
S82122 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 S82122 Annealed and S82122-CD?
Annealed is the default condition — standard supply condition for plate, pipe and bar: balanced 50/50 duplex structure with maximum toughness and corrosion resistance. CD: pick for shafts, fasteners and machined parts needing tight tolerance and higher yield strength. Yield strength is 520 MPa in Annealed versus 700 MPa in CD.
How much does S82122 cost?
S82122 is a standard-cost stainless steel ($$), cheaper than about 71% 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 A480/A480M — General Requirements for Flat-Rolled Stainless Steel — ASTM International (2023)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels, and High-Performance Alloys — ASM International (1990)
- Lean duplex stainless steel datasheets (2101/2202-type physical and mechanical data) — Outokumpu / Sandvik (2023)
- Practical Guidelines for the Fabrication of Duplex Stainless Steels — IMOA (2014)
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.