Automotive exhaust system use 409 stainless steel coils

Xinjing is a full line processor, stockholder and service center for various of cold rolled and hot rolled stainless steel coils, sheets and plates, for over 20 years. Our cold rolled materials all are rolled by 20 rolling mills, meet with international standards, precision enough on flatness and dimensions. Our smart and precision cutting & slitting services can meet various demands, while the most skilled technical advice are always available.

Products Attributes

• Alloy 409 is a general purpose, chromium, titanium stabilized, ferritic stainless steel whose primary application is automotive exhaust systems.
• It contains 11% chromium which is the minimum amount for the formation of the passive surface film which gives stainless steel its corrosion resistance.
• It combines good elevated temperature corrosion resistance with medium strength, good formability, and overall cost.
• Must be preheated and worked at low weld temperatures.
• Light surface corrosion can show up in chemically challenging environments, but functionally 409 is much more resistant than aluminized steel and carbon steels.
• This alloy is being used more often in manufacturing and construction, in places where surface rust is acceptable
• It is an inexpensive substitution where heat is an issue, but chemically accelerated corrosion is not.
• Grade 409 steel must be pre-heated to temperatures of 150 to 260°C before welding.

Application

• Automotive exhaust systems assemblies: Exhaust pipes, the caps of exhaust flexible pipes, catalyst converters, mufflers, tailpipes
• Farm equipments
• Structural support and hangers
• Transformer cases
• Furnace components
• Heat exchanger tubing

Although Alloy 409 is designed principally for the automotive exhaust industry, it has been successfully used in other industrial applications as well.