B 393-86.pdf Apr 2026

ASTM B393-86 defines standards for niobium and niobium alloy strip, sheet, and plate, focusing on material quality for high-performance applications like electronics, aerospace, and chemical processing. It covers various grades, including unalloyed and zirconium-alloyed types, requiring precise manufacturing methods like electron-beam melting. For the most current technical requirements, engineers typically refer to the latest updated version, such as ASTM B393-18 .