Stainless Steel S32001
UNS S32001 · EN 1.4482
UNS S32001 (19D) is a lean, molybdenum-free duplex stainless that uses manganese and nitrogen in place of nickel and Mo, reaching 520 MPa yield, 690 MPa tensile, 32 % elongation and about 230 HB (98 HRB) annealed.
Reference datasheet — S32001 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
S32001 tempers and conditions
S32001 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 |
|---|---|---|---|---|---|---|
Welded tube/pipe, solution annealed after welding | Choose for pressure and process tubing per ASTM A789/A790 where the weld must be re-solutioned to restore phase balance. | 510 | 680 | 30 | 21 HRC | 2.5 % IACS |
AnnealedDefault solution annealed (≈1010–1100 °C) and rapidly cooled | Standard mill condition for plate, sheet, coil, bar and tube — best combination of ductility, toughness and corrosion resistance. | 520 | 690 | 32 | 230 HB | — |
Cold drawn | Use for high-strength fasteners, shafts and reinforcement bar where close tolerance and higher yield are needed. | 690 | 830 | 18 | 28 HRC | 2.5 % IACS |
Cold Worked / temper rolled strip | Pick when higher strength per unit thickness is needed for lightly formed parts, straps and strip; ductility and toughness drop sharply. | 720 | 850 | 14 | 29 HRC | 2.5 % IACS |
Supply forms, finishes and certifications
Ways S32001 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 and skin-passed sheet/coil | Surface finish |
HRAP | Hot Rolled, Annealed and Pickled plate | Surface finish |
What is S32001?
UNS S32001 (19D) is a lean, molybdenum-free duplex stainless that uses manganese and nitrogen in place of nickel and Mo, reaching 520 MPa yield, 690 MPa tensile, 32 % elongation and about 230 HB (98 HRB) annealed. It is chosen as a low-cost alternative to 304/316 where higher strength and better chloride stress-corrosion resistance permit thinner sections; forms include hot-rolled and cold-rolled plate, sheet, 2B coil, cold-drawn bar and welded tube. Pitting resistance is below 2205, service is limited to about 300 °C, and machinability is modest; use 2205 for more aggressive chloride service. S32001 has a density of 7.74 g/cm³ (0.28 lb/in³), lighter than 72% of stainless steel grades. It melts at 1,420°C (2,588 °F). S32001 has a yield strength of 520 MPa (75.4 ksi) and a tensile strength of 690 MPa (100 ksi) — stronger than 79% of stainless steel grades. Elongation at break is 32% and the elastic modulus is 200 GPa (29 Msi).
What is S32001 used for?
- structural tanks
- transportation trailers
- general industrial fabrication
Advantages
- 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
S32001 properties
Typical room-temperature values for S32001-Annealed; bars are the position among stainless steel grades.
Physical3
S32001 has a density of 7.74 g/cm³ (0.28 lb/in³), lighter than 72% of stainless steel grades. It melts at 1,420°C (2,588 °F).
Mechanical16
S32001 has a yield strength of 520 MPa (75.4 ksi) and a tensile strength of 690 MPa (100 ksi) — stronger than 79% of stainless steel grades. Elongation at break is 32% and the elastic modulus is 200 GPa (29 Msi).
Thermal6
S32001 is rated for continuous service to 300°C (572 °F). It conducts heat at 15.5 W/m·K (8.96 BTU/hr·ft·°F), better than 53% of stainless steel grades. Thermal expansion is 13 µm/m·K (7.22 µin/in·°F).
Electrical3
S32001 conducts electricity at 2.5 % IACS, better than 75% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is good (58/100), worse than 62% of stainless steel grades.
Sustainability4
Producing a kilogram of S32001 takes about 50 MJ of energy and emits 4.5 kg of CO₂ — less than 80% of stainless steel grades. Typical recycled content is 65%.
Manufacturability7
S32001's machinability is fair (40/100, better than 72% 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. S32001 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with S32001
Is S32001 easy to machine?
Machine like 2205 but slightly easier: rigid setups, sharp positive-rake carbide, low speed / heavy positive feed to cut under the work-hardened skin, ample flood coolant.
Can S32001 be welded?
GTAW/GMAW/SAW with over-alloyed 2209 (or matching 2101/2307) filler and N-bearing shielding; keep heat input roughly 0.5–2.5 kJ/mm and interpass <150 °C, no PWHT — autogenous welds should be re-annealed or filler-added to keep austenite content.
Can S32001 be formed, bent or molded?
Cold formable but needs ~2× the press force and larger over-bend allowance than 304 because of high yield and springback; hot work 1100–1200 °C and always solution anneal + water quench afterwards.
S32001 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 | ≤ 0.03 | 0.02 |
| Mnaustenite stabiliser replacing Ni | 4 – 6 | 5 |
| Si | ≤ 1 | 0.5 |
| P | ≤ 0.04 | 0.03 |
| S | ≤ 0.03 | 0 |
| Cr | 19.5 – 21.5 | 20.5 |
| Ni | 1 – 3 | 1.7 |
| Moresidual only — Mo-free design | ≤ 0.6 | 0.2 |
| N | 0.05 – 0.17 | 0.12 |
| Cu | ≤ 1 | 0.3 |
| Fe | balance |
What surface finishes work on S32001?
Pickle/passivate (HNO₃-HF) or bead-blast plus passivation after welding to remove heat tint; electropolishing and mechanical polishing give good bright finishes — do not anodize.
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
Equivalent designations
Standards and trade names that resolve to Stainless Steel S32001 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- EN / DIN / Werkstoff-Nr.
- 1.4482
- Trade names
- 19D
How much does S32001 cost?
S32001 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.
S32001 — frequently asked
What is S32001 used for?
S32001 is typically used for structural tanks, transportation trailers and general industrial fabrication. In short: lowest-cost duplex stainless; molybdenum-free 304 replacement; roughly double 304 yield.
What is the yield strength of S32001?
S32001 has a typical yield strength of 520 MPa (75.4 ksi) and a tensile strength of 690 MPa (100 ksi) — stronger than 79% of stainless steel grades. Strength varies by condition: see the 4 listed tempers.
Is S32001 easy to machine?
Not especially — machinability is rated fair (40/100, better than 72% of stainless steel grades). Machine like 2205 but slightly easier: rigid setups, sharp positive-rake carbide, low speed / heavy positive feed to cut under the work-hardened skin, ample flood coolant.
Can S32001 be welded?
Yes — weldability is rated very good (70/100). GTAW/GMAW/SAW with over-alloyed 2209 (or matching 2101/2307) filler and N-bearing shielding; keep heat input roughly 0.5–2.5 kJ/mm and interpass <150 °C, no PWHT — autogenous welds should be re-annealed or filler-added to keep austenite content.
What surface finishes work on S32001?
Pickle/passivate (HNO₃-HF) or bead-blast plus passivation after welding to remove heat tint; electropolishing and mechanical polishing give good bright finishes — do not anodize.
Can S32001 be formed, bent or molded?
Cold formable but needs ~2× the press force and larger over-bend allowance than 304 because of high yield and springback; hot work 1100–1200 °C and always solution anneal + water quench afterwards.
What is the maximum service temperature of S32001?
S32001 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 S32001 Annealed and S32001 CW-TR?
Annealed is the default condition — standard mill condition for plate, sheet, coil, bar and tube — best combination of ductility, toughness and corrosion resistance. CW-TR: pick when higher strength per unit thickness is needed for lightly formed parts, straps and strip; ductility and toughness drop sharply. Yield strength is 520 MPa in Annealed versus 720 MPa in CW-TR.
How much does S32001 cost?
S32001 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 A789/A790 — Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing and Pipe — ASTM International (2021)
- 19D (UNS S32001) Lean Duplex Stainless Steel Data Sheet — Cleveland-Cliffs (formerly AK Steel) (2021)
- 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 — International Molybdenum Association (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.