Look up steel blue in Wiktionary, the free dictionary.

Blue Steel or blue steel may refer to:

Science, technology and engineering

• Blue steel, a tempering color of steel
• Bluing (steel), a process in which steel is partially protected against rust
• Martensite, a crystalline form of steel
• Iron(II,III) oxide, a black oxide that may form when iron is heated
• Blue Steel (missile), a British Cold War nuclear missile

Film

• Blue Steel (1934 film), 1934 western starring John Wayne
• R.O.T.O.R., a 1987 science fiction/action film also known as Blue Steel
• Blue Steel (1990 film), American action thriller film directed by Kathryn Bigelow
• Blue Steel Pose, Derek Zoolander's trademark look in Zoolander and Zoolander 2

Other uses

• Blue Steel, canceled DC video games by Factor 5
• Blue Steel guitar strings, made by Dean Markley Strings
• Tar Heel Blue Steel, a basketball team