S32205 GRADE Duplex SS SMLS TUBE
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
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
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,A% | Permissible Variations in Cut Length, in. [mm]B | Thin Walled TubesC | |
| 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 0.065in. [1.65mm]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]nomina |
| 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 |