Kyaw Stainless is a reputable manufacturer and supplier of Stainless Steel 409L Tubing based in Naypyidaw, Myanmar. They offer dependable stainless steel solutions tailored for both industrial and commercial needs. This particular grade, Stainless Steel 409L, is a low-carbon ferritic type that stands out for its impressive heat resistance, corrosion protection, and affordability, making it ideal for environments that experience high temperatures and mild corrosion. At Kyaw Stainless, they prioritize high-quality production, precise dimensions, and longevity by adhering to advanced manufacturing techniques and strict quality control standards. Their SS 409L Tubing is a popular choice in sectors like automotive, fabrication, exhaust systems, and general engineering, where durability, ease of welding, and cost-effectiveness are key.
Stainless Steel 409L Tubing is composed of about 10.5–11.75% chromium and features a very low carbon content, which enhances its weldability and helps prevent carbide precipitation. This alloy provides moderate resistance to corrosion, good formability, and excellent oxidation resistance at high temperatures. SS 409L is designed to deliver sufficient tensile strength, toughness, and thermal stability for components exposed to heat. Its low carbon content also boosts resistance to intergranular corrosion, ensuring smooth welding without the risk of cracking. It maintains its structural integrity during bending, processing, and prolonged use, making it a reliable choice for automotive and industrial applications that demand strong metallurgical performance.
| Material | Grade |
|---|---|
| GRADES | TP 409L Stainless Steel Tubes / UNS S40903 / DIN 1.4512 |
| SIZE | 1/2″ NB to 24″ NB |
| STANDARDS | ASTM A213, ASTM A249, ASTM A554, ASTM A269, ASTM A270, ASTM A790, ASTM A789 |
| TYPE | Seamless Tubes, Welded Tubes, EFW Tubes, ERW Tubes, Fabricated Tubes, Cold Drawn Welded Tubes (CDW Tubes) |
| FORM | Round Tubes, Square Tubes, Rectangular Tubes, Oval Tubes, Hydraulic Tube, etc. |
| END | Plain End, Treaded, Beveled End |
| TOLERANCE on Length | Commercial Length: 6000mm +/- 30mm Fix Length: from 1200 mm up to 12000mm with a tolerance up to -0/+ 5mm |
| FINISH | Seamless, Welded, Brushed, Pickled, Solution Annealed and Pickled up to O.D. 219.1mm, Polished Grit 120 – 600, Mirror Polished |
| AISI 409L | Maximum | Minimum |
|---|---|---|
| Ni | 28.00 | 23.00 |
| C | 0.20 | – |
| Mn | 2.00 | – |
| P | 00.045 | – |
| S | 00.035 | – |
| Si | 1.00 | – |
| Cr | 23.0 | 19.0 |
| Mo | 5.00 | 4.00 |
| N | 00.25 | 00.10 |
| CU | 2.00 | 1.00 |
| Element | Grade 409L |
|---|---|
| Density | 8 |
| Melting Range | 1300 -1390 ℃ |
| Tensile Stress | 490 |
| Yield Stress (0.2%Offset) | 220 |
| Elongation | 35% minimum |
| Hardness (Brinell) | – |
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Stainless Steel 409L Tubing is extensively used in automotive exhaust systems, catalytic converters, and mufflers, where heat resistance and durability are essential. It is also used in heat exchangers, industrial ventilation equipment, and pollution control equipment, providing reliability for high-temperature applications. The tubing is further used in power generation plants, boiler parts, and structural uses, providing superior corrosion resistance and long-term performance. Its higher weldability and oxidation resistance feature make it a good candidate for chemical processing equipment, food processing equipment, and marine equipment, where efficiency and durability are required.
Excellent corrosion resistance, Stainless Steel 409L Seamless Tubing is known for its uniformity and strength. It typically comes in sizes ranging from 6mm to 350mm in diameter and lengths of up to 6 meters. Ideal for applications requiring high pressure and corrosive resistance.
Superior resistance to chloride-induced stress corrosion cracking. Available in sizes from 10mm to 150mm in diameter and standard lengths of 6 meters. It is often used in industrial and chemical processing applications where weld strength is critical.
Featuring outstanding corrosion resistance, Stainless Steel 409L Heat Exchanger Tubes are used in demanding environments. Sizes typically range from 6mm to 50mm in diameter, with wall thickness varying from 1mm to 3mm. These tubes are designed for high temperature and pressure conditions.
Excellent resistance to corrosion and is ideal for precise measurement systems. Common sizes include 1/8″ to 1/2″ in diameter and lengths up to 6 meters. It is suitable for high-pressure applications and harsh environments.
Superior resistance to both oxidation and corrosion, Stainless Steel 409L Boiler Tubes are used in high-pressure steam applications. Sizes typically range from 25mm to 100mm in diameter, with lengths of up to 6 meters. They are essential for maintaining efficiency in boiler systems.
Excellent resistance to corrosive fluids and are commonly used in heat exchangers. Standard sizes range from 10mm to 100mm in diameter with various lengths. They are designed to handle thermal expansion and contraction in dynamic environments.
Used in marine and power generation applications, offering exceptional resistance to seawater and acidic environments. Sizes typically range from 10mm to 50mm in diameter and lengths up to 6 meters, providing durability and efficiency.
Designed for enhanced heat transfer and corrosion resistance in air-cooled heat exchangers. They are available in various diameters, commonly 25mm to 50mm, with fin lengths customizable to specific requirements, ensuring effective cooling in challenging environments.
You’ll find Stainless Steel 409L Tubing commonly used in automotive exhaust systems, including silencers, mufflers, catalytic converters, and heat shields, thanks to its outstanding resistance to high temperatures and corrosion from exhaust gases. Additionally, it finds applications in food processing equipment, ventilation systems, structural fabrication, and heat exchangers. This tubing excels in mildly corrosive and oxidizing environments, offering excellent weldability and performance.
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