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                  Color Key

                  • Hot End
                  • Cold End
                  Exhaust

                  +x

                  X

                  Manifold / Maniverter

                  • 15 Cr-Cb?
                  • 18 Cr-Cb?
                  • Type 439
                  • AK Steel 436L
                  • THERMAK? 17
                  • Type 444

                  Grades designed for demanding hot-end applications.

                  +x

                  X

                  Flange

                  • AK Steel 409 Ni
                  • Type 410Cb

                  Toughness and ease of fabrication create lightweighting potential over carbon steel options.

                  +x

                  X

                  Connecting Pipe

                  Hot-End

                  • 15 Cr-Cb?
                  • 18 Cr-Cb?
                  • Type 439
                  • AK Steel 436L
                  • Aluminized Types 409/439
                  Cold-End
                  • Types 409/439
                  • AK Steel 436L
                  • Alumnized Types 409/439
                  Solutions to meet both hot and cold end exhaust pipes.

                  +x

                  X

                  Tail Pipe

                  • Type 409
                  • Type 439
                  • AK Steel 436L
                  • Aluminized Type 409
                  • Aluminized Type 439
                  • Type 304L

                  Properties ranging from durable to aesthetically critical.

                  +x

                  X

                  Muffler

                  • Types 409/439
                  • Aluminized Types 409/439
                  • AK Steel 436L
                  • 18 Cr-Cb?

                  Internal Exhaust Tubing

                  • Types 409/439
                  • 15 Cr-Cb?
                  • 18 Cr-Cb?
                  • AK Steel 436L

                  Alloys offering oxidation and corrosion resistance for a long-lasting product.

                  AK Steel's Sustainability Efforts Featured on "Earth" TV Program

                  AK Steel was recently featured in a special TV segment as part of the "EARTH" TV program. The segment focuses on our sustainability work, and you will see video from our AK Steel Middletown Works and our Research and Innovation Center. We hope you will be inspired by the important work our employees are doing every day to reduce, reuse and recycle water critical to the steelmaking process, and our role in making steel the world's most recycled material.

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