Solution Annealed & Bright Annealed Pipes & Tubes
Solution Annealed & Bright Annealed
Solution Annealed is a heat treatment process that is commonly used to restore the corrosion resistance of stainless steel and other alloys. This process involves heating the material to a high temperature (usually between 1010°C and 1120°C) and then rapidly cooling it to ensure that any precipitates or carbides that may have formed during welding or exposure to high heat are dissolved. This results in a homogeneous and stable microstructure that improves the material's corrosion resistance, ductility, and mechanical properties. Solution annealing is widely used in applications that demand high strength, such as chemical processing, aerospace, and power generation.
Bright Annealing is a more specialized form of annealing in which the material is heated in a controlled atmosphere, often in a vacuum or with an inert gas such as hydrogen. The goal of this process is to achieve a clean, smooth, and oxide-free surface while maintaining the excellent mechanical properties of the material. Bright annealing is commonly used for products that require an aesthetically pleasing surface, such as architectural components and food-grade equipment. It also improves the resistance to corrosion, making it ideal for use in industries where both performance and appearance are crucial.
Specification Table
| Specification | Size Range | Wall Thickness | Length | Standards |
|---|---|---|---|---|
| ASTM A269 / A213 | 1/4" to 24" | 0.035" to 0.5" | 6m, 12m | ASTM, ASME, DIN |
| ASTM A312 | 1/2" to 36" | Sch 10S to Sch 160 | 6m, 12m | ASTM, ASME |
| DIN 11850 / EN 10357 | 10mm to 273mm | 1mm to 12mm | 6m, 12m | DIN, ISO |
Grade Comparison Table
| SS 304 / 304L | Cr: 18-20%, Ni: 8-10.5% | Excellent resistance to chemical corrosion and oxidation | Food processing, pharmaceutical, chemical plants |
| SS 316 / 316L | Cr: 16-18%, Ni: 10-14%, Mo: 2-3% | High resistance to chloride corrosion and marine environments | Marine, chemical, petrochemical, medical applications |
| SS 321 | Cr: 17-19%, Ni: 9-12%, Ti stabilized | Resistant to intergranular corrosion at high temperatures | Heat exchangers, furnace components, high-temp industrial equipment |
| SS 310S | Cr: 24-26%, Ni: 19-22% | Excellent oxidation resistance at high temperatures | Furnace tubes, boilers, high-temp chemical applications |
Client Comments
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Mark Johnson
We used solution annealed SS 316 tubes from Stellirox Tubular LLP for our chemical plant. The corrosion resistance and surface finish were outstanding, ensuring smooth operation and long service life.
March 12, 2025 at 10:00 am
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Emily Davis
The bright annealed SS 304L tubes provided by Stellirox Tubular LLP were perfect for our pharmaceutical equipment. The smooth, shiny finish ensured hygiene compliance and easy cleaning.
April 5, 2025 at 2:30 pm
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Robert Lee
Stellirox Tubular LLP supplied us with SS 321 solution annealed tubes for a high-temperature furnace project. They performed exceptionally well under thermal stress, with no corrosion or scaling.
May 22, 2025 at 11:15 am
Key Features- Superior corrosion resistance in chemical, marine, and industrial environments
- Enhanced ductility and mechanical strength due to solution annealing
- Bright annealed surface provides smooth, reflective, and oxide-free finish
- Resistant to intergranular corrosion and stress corrosion cracking
- High-temperature stability for furnace and boiler applications
- Compliant with ASTM, ASME, DIN, and ISO standards