Stainless Steel 409 Mandrel Bends 2½" (63mm) OD

409 Grade Stainless Steel mandrel bends, commonly used in exhaust fabrication, repairs, and custom exhaust system construction. Mandrel bent for smooth flow with no reduction in diameter when compared with press-bent alternatives. Measured by the outside diameter (OD). 409 Grade Stainless Steel 1.6mm nominal wall thickness 150mm equal leg lengths (approx.) Leg lengths can vary slightly between batches. If you require exact measurements for a specific size bend, please contact us. Several bend angle options available. 409 Grade Stainless Steel is the industry-standard material for automotive exhaust systems, combining excellent high-temperature performance with good corrosion resistance and long service life. Widely used by vehicle manufacturers, it offers a practical and cost-effective alternative to premium stainless steel grades while providing significantly greater durability than mild steel or aluminised steel. Compared with other exhaust materials, 409 stainless steel offers excellent weldability, good formability, high temperature resistance, and a low rate of thermal expansion, making it well suited to demanding exhaust applications.