Weston Stainless, Midland, UK is a renowned company supplying superior quality stainless steel products that are durable and economical for use in different industries. One such major product offered by the company, Stainless Steel 409 Pipes, is produced with grade 409 stainless steel, which is a ferritic alloy of high oxidation and corrosion resistance. The pipes can be found in seamless, welded, and ERW (Electric Resistance Welded) types to provide versatility across different industries. Made up predominantly of iron, chromium, and minor contents of nickel, the pipes have enhanced weldability, heat resistance at high temperatures, and cost-effectiveness, thus finding widespread usage in automotive, construction, and industrial purposes.
Stainless Steel 409 Pipes consist of 10.5-11.75% chromium, 0.03% carbon, 0.5% nickel, and trace quantities of manganese, silicon, and nitrogen, possessing average corrosion resistance and excellent oxidation protection. Their mechanical characteristics are tensile strength between 380-450 MPa, yield strength of 170 MPa, and up to 89 HRB hardness, guaranteeing resistance to tough conditions. With a density of 7.8 g/cm³ and a melting point of around 1530°C, they possess excellent thermal expansion, conductivity, and resistance to wear, recommending them for applications under high temperatures and structures.
| Item | Stainless Steel 409 Pipe |
| Standard | GB, AISI, ASTM, ASME, EN, BS, DIN, JIS |
| Type | Seamless / ERW / Welded / Fabricated / CDW |
| Outer Diameter Size | SEAMLESS – 1/2″ NB TO 18″ NB WELDED / ERW- 1″ NB TO 16″ NB EFW – 8″ NB TO 110″ NB |
| Form | Round Pipes, Square Pipes, Rectangular Pipe, “U” Shape Pipes, Hydraulic Pipes |
| Wall Thickness | Schedule 10 To Schedule 160 (3 mm to 100 mm Thickness) |
| Length | 01 Meter to 12.5 Meters, Single Random Length, Double Random Length And Customize Size End: Plain End, Beveled End, Treaded |
| Delivery Conditions | As Rolled, Formed, Stress Relieved, Annealed, Hardened, Tempered, Cold Draw |
| Coating | Electropolish, Mechanical Polish, Satin Finish, Passivated |
| Testing | Product Analysis, Transverse Tension Test, Flattening Test, Etching Test, Radiographic Examination, Stabilizing Heat Treatment, Intergranular Corrosion Test, Weld Decay Test, Magnetic Particle Detection, Grain Size Test, NACE 0175, Dual Grade, PWHT (POST WELD HEAT TREATMENT), Flare Test, Bend Test, Hardness Test, Tensile Test etc |
| Dimension | All Pipes Is Manufactured and Inspected / Tested to the Relevant standards including ASTM and ASME |
| Value Added Services | Draw / Expansion / Machining / Sand Blasting / Shot Blasting / Heat Treatment |
| Packaging | Loose / Bundle / Wooden Pallet / Wooden Box / Plastic Cloth Wraps / Plastic End Caps / Beveled Protector |
| Material Test Certificate | Manufacturer Test Certificate As Per EN10204 3.1, 3.2 / Laboratory Test Certificate From NABL Approved Lab. / Under Third Party Inspection Agency Like SGS, TUV, DNV, LLOYDS, ABS ETC |
| Grade | C | Mn | Si | P | S | Cr | MO | Ni | CU | |
| 409 | Min | – | – | – | – | – | 10.5 | – | – | – |
| max | 0.03 | 1.00 | 1.00 | 0.04 | 0.02 | 11.7 | – | 0.5 | – |
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
| Rockwell B (HR B) | Brinell (HB) | ||||
| 409 | 380 | 170 | 20 | 88 | 0.5t |
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Stainless Steel 409 Pipes are extensively employed in vehicle exhaust systems, catalytic converters, mufflers, and heat exchangers, where resistance to high-temperature oxidation is important. They are applied in building, petrochemical facilities, and structural uses, providing strength in adverse environments. The pipes are suitable for boiler systems, industrial furnaces, and farm equipment, where basic corrosion resistance and affordability are needed. Their thermal cycling, mechanical stress, and chemical exposure resistance makes them a favorite in engineering, manufacturing, and heavy industry where performance and durability are needed.
High resistance to oxidation and corrosion. Commonly used in automotive exhaust systems and industrial applications, it offers good strength and durability.
High resistance to oxidation and corrosion, making it ideal for exhaust systems and industrial applications. Its seamless construction provides superior strength and reliability.
High oxidation and corrosion resistance with durability. It’s commonly used in automotive exhaust systems and industrial applications, offering strength through its welded construction.
Excellent resistance to corrosion and oxidation. It’s used in automotive and industrial applications, featuring strong welds and good mechanical properties.
Provides excellent corrosion and oxidation resistance. Ideal for automotive and industrial uses, it features strong, uniform welds and high durability.
Engineered for strength and durability, offering excellent resistance to oxidation and corrosion. It’s commonly used in customized applications, including exhaust systems and industrial components.
Stainless Steel 409 Pipes are extensively employed in vehicle exhaust systems, catalytic converters, mufflers, and heat exchangers, where resistance to high-temperature oxidation is important. They are applied in building, petrochemical facilities, and structural uses, providing strength in adverse environments. The pipes are suitable for boiler systems, industrial furnaces, and farm equipment, where basic corrosion resistance and affordability are needed. Their thermal cycling, mechanical stress, and chemical exposure resistance makes them a favorite in engineering, manufacturing, and heavy industry where performance and durability are needed.
Weston Stainless delivers mill test certificates (MTC) according to EN 10204 3.1/3.2 to ensure conformity to material and mechanical requirements. The pipes are properly packed in wooden crates, waterproof wrapping, or individually tailored packaging to ensure safe transportation and storage without damage. Operating a large supply chain and international logistics network, the organization ensures timely delivery with strict quality control to ensure international industry standards and customer requirements.







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