This specification covers an aircraft-quality, low-alloy steel in the form of bars, forgings, mechanical tubing, and forging stock. These products have been used typically for parts 0.250 inch (6.35 mm) and under in nominal section thickness at time of heat treatment requiring a through-hardening steel capable of developing hardness as high as 50 HRC and also parts of greater thickness requiring proportionately lower hardness, but usage is not limited to such applications.
SAE AMS6312H-2011 Referenced Document
ASTM A255-10 Standard Test Methods for Determining Hardenability of Steel*， 2024-04-19 Update
ASTM A370-10 Standard Test Methods and Definitions for Mechanical Testing of Steel Products*， 2024-04-19 Update
ASTM A370-11 Standard Test Methods and Definitions for Mechanical Testing of Steel Products*， 2024-04-19 Update
ASTM E112-10 Standard Test Methods for Determining Average Grain Size*， 2024-04-19 Update
ASTM E381-01 Standard Method of Macroetch Testing Steel Bars, Billets, Blooms, and Forgings*， 2024-04-19 Update
ASTM E384-10 Standard Test Method for Microindentation Hardness of Materials*， 2024-04-19 Update
ASTM E384-11 Standard Test Method for Knoop and Vickers Hardness of Materials*， 2024-04-19 Update