DIN 10296-2 1.4509 Stainless Steel Round Pipe
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What is the DIN 10296-2 standard?
DIN EN 10296-2 (or BS EN 10296-2) specifies the technical delivery conditions for welded circular stainless steel tubes used in mechanical and general engineering applications. It covers tubes made from austenitic, ferritic, and duplex stainless steels, detailing requirements for manufacturing, dimensions, tolerances, and mechanical properties.
What is EN 10296-2 1.4509 Welded circular steel tubes?
EN 10296-2 specifies technical delivery conditions for welded circular steel tubes for mechanical and general engineering purposes, with 1.4509 being a ferritic stainless steel grade (also known as X6CrTiNb18). These tubes are corrosion-resistant, weldable, and stabilized with niobium to prevent intergranular corrosion. They are commonly used in automotive exhaust systems, structural components, and applications requiring moderate durability in corrosive environments.
DIN 10296-2 1.4509 Stainless Steel Round Pipe Specification
| Item | Description |
|---|---|
| Standard | DIN EN 10296-2 |
| Material Number | 1.4509 |
| Steel Grade | X2CrTiNb18 |
| AISI Equivalent | AISI 441 |
| Tube Type | Welded Circular Stainless Steel Tube |
| Surface Finish | Annealed & Pickled (W2), Bright Annealed (W2B), or Polished (Grit 180–600) |
| Outside Diameter (D) Tolerance | ± 0.75% or ± 0.3 mm (whichever is greater) |
| Wall Thickness (T) Tolerance | ± 10% or ± 0.2 mm (whichever is greater) |
| Straightness | 0.0015 of total length |
| Length Tolerance | Standard +5mm / -0mm (or as agreed) |
Chemical Composition (%)
According to DIN EN 10088-2 / DIN EN 10296-2:
| Carbon (C) | Silicon (Si) | Manganese (Mn) | Phosphorus (P) | Sulfur (S) | Chromium (Cr) | Titanium (Ti) | Niobium (Nb) |
| ≤ 0.03 | ≤ 1.00 | ≤ 1.00 | ≤ 0.040 | ≤ 0.015 | 17.5 - 18.5 | 0.10 - 0.60 |
3×C+0.3 to 0.90 |
Mechanical Properties (at Room Temperature)
| Property | Value |
| Tensile Strength (Rm) | 430 – 630 MPa |
| Proof Strength (Rp0.2) | ≥ 230 MPa |
| Elongation (A) | ≥ 18% |
| Hardness (HBW) | ≤ 200 (Typical) |
| Weld Factor |
z=1.0 (for tested welds) |
How does 1.4509 compare to 1.4512?
1.4509 (AISI 441) is a higher-performance ferritic stainless steel compared to 1.4512 (AISI 409), offering significantly better corrosion resistance and high-temperature strength due to higher chromium (~18% vs ~12%) and niobium stabilization. While 1.4512 is an economical choice for basic exhaust systems, 1.4509 is used for more demanding, durable exhaust, decorative, and appliance applications.
What is the difference between 1.4509 and 1.4301 stainless steel pipe?
1.4301 (304) is an austenitic stainless steel with excellent corrosion resistance and deep-drawing properties; while 1.4509 (441) is a titanium-stabilized ferritic stainless steel designed for high-temperature strength, excellent oxidation resistance, and lower cost. 1.4301 is more suitable for general applications with heavy chemical corrosion; 1.4509 is more suitable for automotive exhaust emissions and high-temperature environments.
Is the 1.4509 Stainless Steel Round Pipe magnetic?
Yes, 1.4509 stainless steel round tubing (also known as AISI 441) is magnetic. This material is magnetic in all states, including after welding or heat treatment. It is commonly used in applications that require both magnetism and high corrosion resistance, such as automotive exhaust systems.
Heat resistance of 1.4509 Stainless Steel Pipe
1.4509 (AISI 441) is a stabilized, nickel-free ferritic stainless steel offering high-temperature strength (up to 950°C), excellent corrosion resistance (similar to 304), and good forming/welding properties. Commonly used for automotive exhaust systems and home appliances, it acts as a cost-effective alternative to austenitic grades.
Applications
Automotive Industry: Exhaust systems, manifolds, and catalytic converter shells.
Heat Exchangers: Tubular components for boilers and heaters.
Kitchen Equipment: Catering supplies, ovens, and indoor decorative panels.
Architecture: Interior structural tubes and decorative handrails.
If you have project requirements for 1.4509 (AISI 441), please feel free to place an order. GNEE has a large inventory of popular products for your selection. It can be processed into both seamless and welded forms. For detailed chemical composition and free samples, please contact our factory immediately. We offer competitive prices and excellent service.
Packaging is done with waterproof paper and steel straps, meeting standard export sea freight packaging requirements, suitable for various shipping methods, or customized according to customer requirements.
Packaging Standard Export Packaging for Stainless Steel Sheets
1. Surface Polishing; 2. Strapping Packaging;
3. Wooden Crate Packaging; Wooden Pallet Packaging
4. Container or Bulk; 5. Customized according to customer requirements
