Here’s a list of some of the most well-known, leading global suppliers of American Specification Metals formatted in Markdown:

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Leading Global Suppliers of American Specification Metals

1. Alcoa Corporation

   • Overview: A major player in aluminum production and associated products.
   • Website: alcoa.com

2. United States Steel Corporation (U.S. Steel)

   • Overview: A leading steel producer with a wide range of steel products.
   • Website: uss.com

3. Nucor Corporation

   • Overview: Known for being the largest steel producer in the U.S., specializing in steel and steel products.
   • Website: nucor.com

4. Steel Dynamics, Inc.

   • Overview: A significant player in steel production and metals recycling.
   • Website: steeldynamics.com

5. Textron Inc.

   • Overview: A multi-industry company that includes aerospace and defense products, including specialty metals.
   • Website: textron.com

6. Harris Steel

   • Overview: A leading manufacturer and supplier of rebar and related products.
   • Website: harrissteel.com

7. TimkenSteel Corporation

   • Overview: Produces high-quality alloy steel and specialty steel products.
   • Website: timkensteel.com

8. Kaiser Aluminum Corporation

   • Overview: Specializes in the production of aluminum products for various industries.
   • Website: kaiseraluminum.com

9. Olin Corporation

   • Overview: A manufacturer and supplier of chemical products, including specialty metals.
   • Website: olin.com

10. Aleris Corporation

    • Overview: A global leader in aluminum rolled products, focusing on the aerospace and automotive industries.
    • Website: aleris.com ```

These companies are recognized for their contributions to the metals industry, especially regarding American specifications for metals used in various applications.