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Unformatted text preview: Chapter 5 1. I ron and carbon are two elements found in every type of steel. 2. The percentage of carbon is in the steel from 0% to approximately 2%. 3. Most steel contains more than 90% iron. 4. As the carbon content in steel increases , does the steel become more brittle. 5. As the carbon content in steel increases , does steel become harder. 6. As the carbon content in steel increases, does steel become strong. 7. If the numerical name of a type of steel contains four digits, the first two digits refer to the alloy content. 8. If the numerical name of a type of steel contains four digits , the last two digits refer to the percentage of carbon in the steel . 9. Some steels have five digit names because most steel has between 0.15% and 1.00% carbon or more. 10. In 4024 steel, the 40 indicates alloy content in the steel. 11. In 4147 steel , the 41 indicates that amounts of chromium, and molybdenum. 12. In 52100 steel , the 52 indicates that amounts of chromium. 13. In 8630 steel , the 86 indicates the amounts of chromium, nickel, and molybdenum. 14. The carbon contents of steel from 0% to 2% . The carbon contents of cast iron from 2% to 4% . The carbon contents of wrought is 0% 15.Chromium and nickel are two alloying elements that improve the corrosion resistance of steel....
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This note was uploaded on 09/20/2011 for the course WELDING 2453 taught by Professor Nessel during the Spring '10 term at North Central Texas College.
- Spring '10