Stainless Steel S82122 CW 1/4H
Supply condition
UNS S82122
CW 1/4H = 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.
Values for the CW 1/4H 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 |
|---|---|---|---|---|---|---|
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 |
CW 1/4HThis page 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 CW 1/4H?
S82122 CW 1/4H is S82122 supplied in the CW 1/4H condition — use where extra strength/spring-back is wanted in thin strip or tubing and elongation demand is modest. S82122 CW 1/4H has a yield strength of 750 MPa (109 ksi) and a tensile strength of 900 MPa (131 ksi) — stronger than 93% of stainless steel grades. Elongation at break is 12% and the elastic modulus is 200 GPa (29 Msi). S82122 CW 1/4H 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). Annealed is the default condition FabDigit quotes; CW 1/4H is available on request or by drawing note.
Advantages
- High strength — 750 MPa (109 ksi), better than 93% of stainless steel grades
- Low embodied carbon — 3.6 kg CO₂/kg, better than 83% of stainless steel grades
Limitations
- Limited service temperature — 250°C (482 °F), worse than 99% of stainless steel grades
- Limited ductility — 12%, worse than 95% of stainless steel grades
- Low fracture toughness — 90 MPa·√m (81.9 ksi·√in), worse than 75% of stainless steel grades
S82122 CW 1/4H properties
Typical room-temperature values for S82122 CW 1/4H; 22 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 CW 1/4H 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 CW 1/4H has a yield strength of 750 MPa (109 ksi) and a tensile strength of 900 MPa (131 ksi) — stronger than 93% of stainless steel grades. Elongation at break is 12% and the elastic modulus is 200 GPa (29 Msi).
Thermal5
S82122 CW 1/4H is rated for continuous service to 250°C (482 °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 CW 1/4H conducts electricity at 2.2 % IACS, worse than 61% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is good (62/100), worse than 52% of stainless steel grades.
Sustainability4
Producing a kilogram of S82122 CW 1/4H 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 CW 1/4H's machinability is poor (27/100, worse than 83% of stainless steel grades); weldability good (62/100); formability poor (30/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with S82122 CW 1/4H
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 CW 1/4H — frequently asked
What is S82122 CW 1/4H used for?
S82122 CW 1/4H 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 CW 1/4H?
S82122 CW 1/4H has a typical yield strength of 750 MPa (109 ksi) and a tensile strength of 900 MPa (131 ksi) — stronger than 93% of stainless steel grades. Strength varies by condition: see the 4 listed tempers.
Is S82122 CW 1/4H easy to machine?
Not especially — machinability is rated poor (27/100, worse than 83% 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 CW 1/4H be welded?
Yes — weldability is rated good (62/100). 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 CW 1/4H?
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 CW 1/4H 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 CW 1/4H?
S82122 CW 1/4H is rated for continuous use to about 250°C (482 °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.