Stainless Steel Flanges

SSI is the market-leading stainless steel flange manufacturer. We are manufacturers of high density sintered stainless steel exhaust pipe parts with the powder metal process. As a trusted flange manufacturer, our stainless steel flanges function as low cost connecting devices within automotive hot end exhaust systems.

  • The powder metal process offers far greater design flexibility than traditional stamping or fine blanking processes do

  • The powder metal process offers much lower costs than alternative forging or cast and machine processes do

  • Dedicated, focused factory and support staff ensures maximum performance at the lowest cost

  • Excellent performance relative to weldability, fatigue, oxidation, thermal and corrosion resistance

  • SSI has published multiple industry-specific technical papers and received several significant customer awards

  • Material grades include 409, 409LNi, 430, and 434 at 7.2 g/cm3 minimum density and 304 at 7.0 g/cm3 minimum density and 309L at 7.3 g/cm3 minimum density

  • We provide global technical sales support

  • Our application experience in manufacturing a wide variety of custom flanges dates all the way back to 1996

Marmon and V-Ring Flange

Marmon and V-Ring Flange

  • A combination of powder metal molding and secondary machining processes is often the most cost competitive method for manufacturing stainless steel Marmon flanges
  • These designs provide for serviceable joints in the exhaust, DPF, and turbo automotive systems

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Typical Automotive Flange

Typical Automotive Flange

  • Powder Metal allows the OEM designer the ability to create features at a lower cost than competing technologies.
    • Gasket grooves and steps
    • Weld hubs and counter-bores
    • Contoured face features
  • Our leading processing methods provide the high density stainless steel properties required for automotive exhaust system applications

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SSI Building Part of the Year Award