AK Steel 18 Cr-Cb™ Stainless Steel provides a more effective solution than Type 409 to many automotive exhaust and heat applications, due to its higher oxidation resistance, improved creep resistance and moderate formability.

AK Steel 18 Cr-Cb is a ferritic stainless steel that is stabilized with both titanium and columbium. When given a hightemperature final solution anneal, the alloy exhibits dramatic creep resistance. The dual stabilization prevents carbide sensitization during welding and hightemperature exposure, and makes the alloy thermally nonhardenable.

Potential applications include exhaust system catalytic converters, mufflers and pipes; heat exchangers and heatexchanger tubing; and nonstructural furnace parts.