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The Steelers logo was introduced in 1962 and is based on the "Steelmark," originally designed by Pittsburgh's U.S. Steel and now owned by the American Iron and Steel Institute (AISI). In an ironic twist, it was Cleveland-based Republic Steel that suggested the Steelers adopt the industry logo. It consists of the word "Steelers" surrounded by three astroids (hypocycloids of four cusps). The original meanings behind the astroids were, "Steel lightens your work, brightens your leisure, and widens your world." Later, the colors came to represent the ingredients used in the steel-making process: yellow for coal, orange for iron ore, and blue for scrap steel. While the formal Steelmark logo contains only the word "Steel," the team was given permission to add "ers" in 1963 after a petition against AISI.

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13y ago
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13y ago

It is the logo for US Steel.

The three colored astroids, (hypocycloid with four cusps), represent the ingredients used in the steel-making process: yellow for coal, orange for iron ore and blue for scrap steel.

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15y ago

They are called Hypocycloids. It is the Steelmark logo.

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Q: What are the three geometric symbols that look like diamonds on the Pittsburgh Steelers logo?
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