Stainless Steel S82122 Annealed
Temper · default condition
UNS S82122
Standard supply condition for plate, pipe and bar: balanced 50/50 duplex structure with maximum toughness and corrosion resistance.
Values for the Annealed condition
Other S82122 tempers and conditions
S82122 is listed in 4 conditions; see the grade overview at S82122.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
AnnealedDefaultThis page 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 |
What is S82122 Annealed?
S82122 Annealed is S82122 in the Annealed temper — standard supply condition for plate, pipe and bar: balanced 50/50 duplex structure with maximum toughness and corrosion resistance. S82122 Annealed 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). S82122 Annealed 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).
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 Annealed properties
Typical room-temperature values for S82122 Annealed; 12 are specific to this condition. Other listed values are S82122 reference data and may not represent this condition. Bars are the position among stainless steel grades.
Physical3
S82122 Annealed 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 Annealed 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 Annealed 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 Annealed 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 Annealed 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 Annealed'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. Confirm any required mill or lot documentation when quoting.
Working with S82122 Annealed
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.
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).
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 | — |
S82122 Annealed — frequently asked
What is S82122 Annealed used for?
S82122 Annealed 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 Annealed?
S82122 Annealed 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 Annealed 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 Annealed 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 Annealed?
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 Annealed 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 Annealed?
S82122 Annealed 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.
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. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.