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    • 409 Stainless Steel
    • 409 ULTRA FORM® Stainless Steel
    • 409 Ni (Nickel Modified) Stainless Steel
    • 409 AL (Aluminized) Stainless Steel
    • 409-30 Stainless Steel
    • 409L Stainless Steel
    • 439 Stainless Steel
    • 439 ULTRA FORM® Stainless Steel
    • 439 AL (Aluminized) Stainless Steel
    • 18 Cr-Cb Stainless Steel
    • 441 Stainless Steel
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THE 409 PEOPLE

View Steel Types

409 ULTRA FORM® Stainless Steel

Type 409 ULTRA FORM is an AK Steel proprietary grade developed for applications needing better formability of complex shapes, compared to conventional Type 409 Stainless Steel. T409 Ultra Form is available in Hot Rolled Annealed and Pickled #1 (HRAP) and Cold Rolled 2B or 2D surface finishes. Originally developed for automotive exhaust systems, end users of T409 stainless steel also include manufacturers of non-automotive exhaust systems, truck, power generation, heat exchanger, silencer, fuel filter, farm, agricultural, spreader, woodstove, furnace, transformer, tubing and casket equipment components. 409 and 409 Ultra Form perform well in high temperature environments, offer oxidation and corrosion resistance, good formability and good weldability at an economical price point. Available thicknesses range from .006” to .500”

Data Bulletin

Stainless Steel Types:
  • 409 Stainless Steel
  • 409 ULTRA FORM® SS
  • 409 Ni (Nickel Modified) Stainless Steel
  • 409 AL (Aluminized) Stainless Steel
  • 409-30 Stainless Steel
  • 409L Stainless Steel
  • 439 Stainless Steel
  • 439 ULTRA FORM® SS
  • 439 AL (Aluminized) Stainless Steel
  • 18 Cr-Cb Stainless Steel
  • 441 Stainless Steel

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