Stainless Steel S82012
UNS S82012
S82012 is a low-nickel Mn–N lean duplex stainless steel, a compositional variant of S82011 with a tighter carbon and nitrogen range for specific product forms.
Reference datasheet — S82012 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 ANN condition
S82012 tempers and conditions
S82012 is supplied in 2 conditions, soft to hard. ANN is the default FabDigit quotes; the values on this page are for it.
Compare all 2 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
ANNDefault Annealed | Standard supply condition for plate, sheet, bar and tube; best ductility, phase balance and corrosion resistance. | 520 | 700 | 35 | 22 HRC | — |
Cold drawn | Pick for straight, close-tolerance bar and wire where extra strength and surface finish are wanted; ductility and impact toughness drop. | 700 | 850 | 20 | 30 HRC | 2.2 % IACS |
Supply forms, finishes and certifications
Ways S82012 is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
Tube-Ann | Welded tube | Supply form |
2B | Cold rolled, annealed, pickled, skin-passed sheet/coil | Surface finish |
HRAP | 1D | Surface finish |
What is S82012?
S82012 is a low-nickel Mn–N lean duplex stainless steel, a compositional variant of S82011 with a tighter carbon and nitrogen range for specific product forms. Annealed material provides 520 MPa yield, 700 MPa tensile, 35% elongation and about 240 HB (22 HRC), and is supplied as hot-rolled annealed plate, 2B sheet, cold-drawn bar and annealed tube. Service is limited to 300 °C and corrosion resistance is rated 58/100, below 2205 in chloride service, while the two-phase structure cuts and forms harder than 304. S82011 or S32205 are the nearest alternatives. S82012 has a density of 7.78 g/cm³ (0.281 lb/in³), lighter than 57% of stainless steel grades. It melts at 1,420°C (2,588 °F). S82012 has a yield strength of 520 MPa (75.4 ksi) and a tensile strength of 700 MPa (102 ksi) — stronger than 79% of stainless steel grades. Elongation at break is 35% and the elastic modulus is 200 GPa (29 Msi).
What is S82012 used for?
- bar and shape stock
- fasteners
- structural components
- storage equipment
Advantages
- Low embodied carbon — 3.2 kg CO₂/kg, better than 95% 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
S82012 properties
Typical room-temperature values for S82012-ANN; bars are the position among stainless steel grades.
Physical3
S82012 has a density of 7.78 g/cm³ (0.281 lb/in³), lighter than 57% of stainless steel grades. It melts at 1,420°C (2,588 °F).
Mechanical17
S82012 has a yield strength of 520 MPa (75.4 ksi) and a tensile strength of 700 MPa (102 ksi) — stronger than 79% of stainless steel grades. Elongation at break is 35% and the elastic modulus is 200 GPa (29 Msi).
Thermal6
S82012 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
S82012 conducts electricity at 2.2 % IACS, worse than 61% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is good (58/100), worse than 62% of stainless steel grades.
Sustainability4
Producing a kilogram of S82012 takes about 45 MJ of energy and emits 3.2 kg of CO₂ — less than 91% of stainless steel grades. Typical recycled content is 70%.
Manufacturability8
S82012'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. S82012 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with S82012
Is S82012 easy to machine?
Treat like 2205 but tougher than austenitics: rigid setups, positive-rake coated carbide, ~20–30 % lower surface speed than 304, heavy constant feed and flood coolant to cut under the work-hardened layer.
Can S82012 be welded?
GTAW/GMAW/FCAW with over-alloyed duplex filler (2209/2307 type) or a nickel-boosted lean-duplex wire, heat input roughly 0.5–2.0 kJ/mm, interpass below ~150 °C, no preheat and no PWHT; check ferrite 35–65 % on weld and HAZ.
Can S82012 be formed, bent or molded?
Cold forms well but needs ~2× the press force of 304 and generous overbend for springback; hot work 1000–1150 °C with fast cooling, and always re-solution anneal (1000–1100 °C, water quench) after hot forming.
S82012 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 lean duplex; tightened C/N range vs S82011 — verify against current ASTM A240 edition | ≤ 0.03 | 0.02 |
| Mnaustenite stabiliser replacing Ni | 2 – 4 | 3 |
| Si | ≤ 1 | 0.5 |
| P | ≤ 0.04 | 0.03 |
| S | ≤ 0.02 | 0 |
| Cr | 19 – 21 | 20.3 |
| Nideliberately lean to decouple cost from Ni price | 0.8 – 2 | 1.4 |
| Mo | ≤ 0.6 | 0.2 |
| Cu | ≤ 0.6 | 0.3 |
| Ncontrols austenite fraction and pitting resistance | 0.15 – 0.27 | 0.21 |
| Fe | balance |
What surface finishes work on S82012?
Pickle/passivate per ASTM A380/A967 (nitric-HF or citric) after welding, remove heat tint by grinding or pickling paste; electropolishes and mechanically polishes reasonably, but the two-phase structure can etch unevenly — not anodisable.
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 S82012 cost?
S82012 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.
S82012 — frequently asked
What is S82012 used for?
S82012 is typically used for bar and shape stock, fasteners, structural components and storage equipment. In short: low-nickel lean duplex; tight C and N variant; 35% annealed elongation.
What is the yield strength of S82012?
S82012 has a typical yield strength of 520 MPa (75.4 ksi) and a tensile strength of 700 MPa (102 ksi) — stronger than 79% of stainless steel grades. Strength varies by condition: see the 2 listed tempers.
Is S82012 easy to machine?
Not especially — machinability is rated poor (33/100, worse than 57% of stainless steel grades). Treat like 2205 but tougher than austenitics: rigid setups, positive-rake coated carbide, ~20–30 % lower surface speed than 304, heavy constant feed and flood coolant to cut under the work-hardened layer.
Can S82012 be welded?
Yes — weldability is rated very good (70/100). GTAW/GMAW/FCAW with over-alloyed duplex filler (2209/2307 type) or a nickel-boosted lean-duplex wire, heat input roughly 0.5–2.0 kJ/mm, interpass below ~150 °C, no preheat and no PWHT; check ferrite 35–65 % on weld and HAZ.
What surface finishes work on S82012?
Pickle/passivate per ASTM A380/A967 (nitric-HF or citric) after welding, remove heat tint by grinding or pickling paste; electropolishes and mechanically polishes reasonably, but the two-phase structure can etch unevenly — not anodisable.
Can S82012 be formed, bent or molded?
Cold forms well but needs ~2× the press force of 304 and generous overbend for springback; hot work 1000–1150 °C with fast cooling, and always re-solution anneal (1000–1100 °C, water quench) after hot forming.
What is the maximum service temperature of S82012?
S82012 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 S82012-ANN and S82012-CD?
ANN is the default condition — standard supply condition for plate, sheet, bar and tube; best ductility, phase balance and corrosion resistance. CD: pick for straight, close-tolerance bar and wire where extra strength and surface finish are wanted; ductility and impact toughness drop. Yield strength is 520 MPa in ANN versus 700 MPa in CD.
How much does S82012 cost?
S82012 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 A276/A479 — Stainless Steel Bars and Shapes — ASTM International (2022)
- Practical Guidelines for the Fabrication of Duplex Stainless Steels, 3rd ed. — IMOA / ISSF (2014)
- ASM Handbook Vol. 1: Properties and Selection — Irons, Steels, and High-Performance Alloys — ASM International (1990)
- Lean duplex stainless (2101/2102/2202 class) datasheets — Outokumpu / ATI / Sandvik (2023)
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.