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S32205 Duplex Stainless Steel Tube - China Suppliers & Factory | Fast Delivery from ZONSUN STEEL
Introduction
S32205 (UNS S32205) is a 22%-23% chromium, 4.5%-6.5% nickel, 3%-3.5% molybdenum duplex stainless steel with a balanced austenite-ferrite microstructure (~50/50 phase balance). It combines high strength, excellent corrosion resistance (especially against chloride stress corrosion cracking), and good weldability.
Key Features
Corrosion Resistance
- Chloride Resistance: Superior to 316L and 317L; resists pitting/crevice corrosion (PREN ≥35).
- Stress Corrosion Cracking (SCC): Immune in chloride-rich environments.
- Acid/Alkali Resistance: Performs well in sulfuric, phosphoric acids, and alkaline solutions.
Fabrication & Strength
- High Strength-to-Weight Ratio: Doubles the yield strength of standard austenitic steels (e.g., 304/316), allowing thinner/lighter designs.
- Welding: Requires controlled heat input; use 2209 filler metal.
- Heat Treatment: Solution annealing at 1020–1100°C followed by rapid cooling.
- Cold Working: Possible but requires annealing to restore phase balance.
Material Specification
- Standard: ASTM A270/A270M
- O.D: 1/8" NB TO 32" NB, (10.29MM-812.80MM), (Customization Available)
- W.T: SCH 10S, SCH 40S, SCH 80S, SCH160, SCH XXS (Customization Available)
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Application:
- Pharmaceutical and Biotechnology
- Food and Beverage Industry
- Cosmetics and Personal Care
- High-Purity Water Systems
- Hygienic Mechanical Systems
- End: Plain End, Beveled End, Threaded
- Processing: Cut-to-length; Polishing.
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Inspection:
- 100% PMI TESTED
- EN10204.3.1B MILL TEST CERTIFICATE
- THIRD PARTY INSPECTION ACCEPTED
- Delivery Condition: Cold Drawn, Annealed and Pickled / Polished / Bright Annealed / Sand blasting / Shot Blasting.
- Marking: All SS SMLS Pipes are marked as follows: Standard, Grade, OD, Thickness, Length, Heat No. (Or as per the customer’s request)
- Packing: Packed in Wooden Boxes, plywood cases, Steel Strips Bundled, or as per Customers Requests
- Specials: Sizes and Specifications other than above can be customized on request.
Specification Parameters
S32205 Chemical Composition
| Heat No. | Chemical Composition (%) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| C | Mn | P | S | Si | Ni | Cr | Mo | N | ||
| Stand. | Min. | - | - | - | - | - | 4.50 | 22.00 | 3.00 | 0.14 |
| Max. | 0.030 | 2.00 | 0.030 | 0.020 | 1.00 | 6.50 | 23.00 | 3.50 | 0.20 | |
S32205 Mechanical Properties
| Mechanical Properties | ||||
|---|---|---|---|---|
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness (HRW) |
| S32205 | 655 | 485 | 25 | C30.5 |
Equivalent Grades - (ASTM A270/A270M S32205 Equivalent Grades)
| ASTM A270/A270M S32205 (UNS S32205) Equivalent Grades | ||||||
|---|---|---|---|---|---|---|
| ISO | EN (Europe) | DIN (Germany) | JIS (Japan) | GB (China) | UNS (USA) | Common Name |
| X2CrNiMoN22-5-3 (ISO 15510) | 1.4462 (EN 10088-2) | X2CrNiMoN22-5-3 (DIN 17440) | SUS 329J3L (JIS G3463) | 022Cr22Ni5Mo3N (GB/T 21833) | S32205 | 2205 (Duplex) |
ASTM A269/A269M Standard Cold Machining Size Deviation Permitted
| ASTM A269/A269M Standard cold machining size deviation permitted | ||||||
|---|---|---|---|---|---|---|
| Group | Size, Outside Diameter, in. [mm] | Permissible Variations in Outside Diameter, in. [mm] | Permissible Variations in Wall Thickness, % | Permissible Variations in Cut Length, in. [mm] | Thin Walled Tubes | |
| Over | Under | |||||
| 1 | Up to 1/2 [13] | ±0.005 [0.13] | ±15 | 1/8 [3.2] | 0 | ... |
| 2 | 1/2 to 1 1/2 [13 to 38], excl | ±0.005 [0.13] | ±10 | 1/8 [3.2] | 0 | less than 0.065 in. [1.65 mm] nominal |
| 3 | 1 1/2 to 3 1/2 [38 to 89], excl | ±0.010 [0.25] | ±10 | 3/16 [4.8] | 0 | less than 0.095 in. [2.41 mm] nominal |
| 4 | 3 1/2 to 5 1/2 [89 to 140], excl | ±0.015 [0.38] | ±10 | 3/16 [4.8] | 0 | less than 0.150 in. [3.81 mm] nominal |
| 5 | 5 1/2 to 8 [140 to 203], excl | ±0.030 [0.76] | ±10 | 3/16 [4.8] | 0 | less than 0.150 in. [3.81 mm] nominal |
| 6 | 8 to 12 [203 to 305], excl | ±0.040 [1.01] | ±10 | 3/16 [4.8] | 0 | less than 0.200 in. [5.08 mm] nominal |
| 7 | 12 to 14 [305 to 356], excl | ±0.050 [1.26] | ±10 | 3/16 [4.8] | 0 | less than 0.220 in. [5.59 mm] nominal |
FAQ
What is S32205 duplex stainless steel?
S32205 (UNS S32205) is a duplex stainless steel containing 22%-23% chromium, 4.5%-6.5% nickel, and 3%-3.5% molybdenum. It features a balanced ~50/50 austenite-ferrite microstructure, which provides high strength, excellent corrosion resistance, and good weldability.
How does S32205 compare to standard austenitic stainless steels like 316L?
S32205 offers superior chloride corrosion resistance compared to 316L and 317L (with a PREN ≥35) and is immune to stress corrosion cracking (SCC) in chloride-rich environments. Additionally, it doubles the yield strength of standard austenitic steels, allowing for thinner and lighter designs.
What are the primary applications of S32205 duplex stainless steel?
S32205 is highly suitable for demanding applications, including the Pharmaceutical and Biotechnology industries, Food and Beverage Industry, Cosmetics and Personal Care, High-Purity Water Systems, and Hygienic Mechanical Systems.
What are the mechanical property requirements for S32205?
According to specifications, S32205 must meet a minimum Tensile Strength of 655 MPa, a minimum Yield Strength (0.2% Proof) of 485 MPa, a minimum Elongation of 25% (in 50mm), and a hardness value of C30.5 HRW.
What are the equivalent material grades for S32205?
Equivalent grades for S32205 (UNS S32205) include ISO X2CrNiMoN22-5-3 (ISO 15510), EN 1.4462 (EN 10088-2), DIN X2CrNiMoN22-5-3 (DIN 17440), JIS SUS 329J3L (JIS G3463), and GB 022Cr22Ni5Mo3N (GB/T 21833).
What processing, delivery, and inspection conditions are available for S32205 pipes?
S32205 pipes can be processed by cutting-to-length and polishing, and delivered in Cold Drawn, Annealed and Pickled, Polished, Bright Annealed, Sand blasting, or Shot Blasting conditions. All pipes undergo 100% PMI testing, and are supplied with EN10204.3.1B Mill Test Certificates, with third-party inspections accepted.