US trade association

Logo of the AISI The "Steelmark" logo, originated by U.S. Steel and used by AISI to promote the steel industry. The logo of the Pittsburgh Steelers and Chilean association football club Huachipato is based on the Steelmark. Members of American Iron and Steel Institute in 1915 at the ore docks in Cleveland

The American Iron and Steel Institute (AISI) is a trade association of North American steel producers. Including its predecessor organizations, it is one of the oldest trade associations in the United States, dating back to 1855. It assumed its present form in 1908, with Judge Elbert H. Gary, chairman of the United States Steel Corporation, as its first president. Its development was in response to the need for a cooperative agency in the iron and steel industry for collecting and disseminating statistics and information, carrying on investigations, providing a forum for the discussion of problems and generally advancing the interests of the industry.

Stainless steel numbering system

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The AISI maintained a numbering system for wrought stainless steel in which the three digits indicate the various compositions. The 200 and 300 series are generally austenitic stainless steels, whereas the 400 series are either ferritic or martensitic. Some of the grades have a one-letter or two-letter suffix that indicates a particular modification of the composition.[1] In 1995 the AISI turned over future maintenance of the system to the Society of Automotive Engineers.[2]

Elbert H. Gary Medal

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Since 1927, the institute has awarded the Elbert H. Gary Medal, an annual medal named for its first president, to a leader within the North American steel industry. Recipients include:

See also

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References

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Benefits Of Using Stainless Steel Balls Versus Carbon Steel Balls

Some benefits of using stainless steel balls include:

• Corrosion resistance: Stainless steel is highly resistant to corrosion, making it suitable for use in environments where the balls may be exposed to water or other corrosive substances.

• Durability: Stainless steel is a strong and durable material that is resistant to wear and tear. This makes it suitable for use in high-stress applications where the balls may be subjected to significant loads or impacts.

• Non-magnetic: Some stainless steel is non-magnetic, which can be beneficial in certain applications where magnetic fields are present.

• Food-grade: Some grades of stainless steel are approved for use in food processing and handling applications, making it a suitable choice for ball bearings used in these environments.

Benefits of using carbon steel balls include:

• Cost: Carbon steel is generally less expensive than stainless steel, which can be a major consideration in cost-sensitive applications.

• Hardness: Carbon steel is harder than stainless steel, making it more suitable for use in applications where high levels of wear and abrasion are expected.

• Magnetic: Carbon steel is magnetic, which can be beneficial in certain applications where a magnetic field is required.

Ultimately, the choice between stainless steel and carbon steel balls will depend on the specific requirements of the application, including factors such as corrosion resistance, durability, cost, and the presence of magnetic fields.

Stainless steel balls and carbon steel balls are both commonly used in ball bearings and other mechanical applications. Both materials have their own unique properties and benefits, and the choice of which one to use will depend on the specific requirements of the application.Some benefits of using stainless steel balls include:Benefits of using carbon steel balls include:Ultimately, the choice between stainless steel and carbon steel balls will depend on the specific requirements of the application, including factors such as corrosion resistance, durability, cost, and the presence of magnetic fields.