Specifications  

AA - Aluminum Association
AISI - American Iron & Steel Institute
AMS - Aerospace Materials Specifications (From SAE)
ASME - American Society of Mechanical Engineers
ASTM - American Society for Testing and Materials
DIN - Deutsches Institut für Normung (German)
JIS - Japanese Industrial Standards
MILS - Military Specifications
QQ - Federal Specifications
UNS - Unified Numbering System