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- SS SMLS PIPE 904L ASTM A240
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S32205 Duplex Stainless Steel Tube Suppliers from China - Factory Direct, Fast Delivery Available
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.
High Strength-to-Weight Ratio
Doubles the yield strength of standard austenitic steels (e.g., 304/316), allowing thinner/lighter designs.
Fabrication & Welding
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)
Application
Pharmaceutical and Biotechnology
Food and Beverage Industry
Cosmetics and Personal Care
High-Purity Water Systems
Hygienic Mechanical Systems
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.
Inspection
100% PMI TESTED
EN10204.3.1B MILL TEST CERTIFICATE
THIRD PARTY INSPECTION ACCEPTED
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
| 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)
| 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
| 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 |
Frequently Asked Questions (FAQ)
What is S32205 duplex stainless steel?
S32205 (UNS S32205) is a duplex stainless steel with a balanced 50/50 austenite-ferrite microstructure. It contains 22% chromium, 5% nickel, and 3% molybdenum, offering high strength and superior corrosion resistance compared to standard austenitic steels.
What are the primary applications of S32205?
Due to its high purity and corrosion resistance, S32205 is widely used in hygienic and high-purity environments, including the pharmaceutical, biotechnology, food and beverage, cosmetics, and high-purity water systems.
How does S32205 compare to standard 316L stainless steel?
S32205 provides roughly double the yield strength of standard austenitic steels like 316L. It also offers significantly higher resistance to localized corrosion (pitting and crevice corrosion) and is virtually immune to chloride-induced stress corrosion cracking.
What are the equivalent grades of S32205?
S32205 is globally equivalent to ISO X2CrNiMoN22-5-3, EN/DIN 1.4462, JIS SUS 329J3L, and GB 022Cr22Ni5Mo3N. It is commonly referred to as Duplex 2205.
What welding and heat treatment procedures are required for S32205?
Welding S32205 requires controlled heat input and the use of matching 2209 filler metal. For heat treatment, solution annealing should be performed at 1020–1100°C, followed by rapid cooling to restore the phase balance.