This specification covers low-alloy steel springs made of annealed round wire heat treated after forming. These springs have been used for valve springs, clutch springs, and other highly stressed springs on which a hardened case is required as assurance that surfaces will not be decarburized, but usage is not limited to such applications. Hardness of these springs is very high and use is recommended only after careful consideration.
SAE AMS7301H-2009 Referenced Document
ASTM E1444-05 Standard Practice for Magnetic Particle Testing*, 2024-04-20 Update
ASTM E18-08 Standard Test Methods for Rockwell Hardness of Metallic Materials*, 2024-04-20 Update
ASTM E290-09 Standard Test Methods for Bend Testing of Material for Ductility*, 2024-04-20 Update
SAE AMS2301J-2001 Steel Cleanliness, Aircraft Quality Magnetic Particle Inspection Procedure