Understanding ASTM A193 B7 vs B16: Key Differences Explained

Discover the differences between ASTM A193 B7 and B16 bolts for high-temperature applications.

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ASTM A193 B7 and B16 are specifications for bolts used in high-temp and high-pressure environments. B7 bolts are made of chromium-molybdenum steel, ideal for temperatures up to 450°F. B16 bolts are made from a different alloy that can withstand temperatures up to 750°F, offering higher temperature resistance. Choose based on the specific temperature and pressure requirements of your application.

FAQs & Answers

  1. What materials are ASTM A193 B7 and B16 bolts made from? ASTM A193 B7 bolts are made from chromium-molybdenum steel, while B16 bolts are made from a different alloy designed for higher temperature resistance.
  2. What are the temperature ratings for ASTM A193 B7 and B16 bolts? B7 bolts can withstand temperatures up to 450°F, whereas B16 bolts can handle temperatures up to 750°F.
  3. In what applications are ASTM A193 B7 and B16 bolts typically used? Both B7 and B16 bolts are used in high-temperature and high-pressure environments, such as power plants and petrochemical facilities.
  4. How do I choose between ASTM A193 B7 and B16 for my project? Select B7 bolts if your application operates below 450°F, and opt for B16 bolts for environments that exceed that temperature, ensuring you also consider the pressure requirements.

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