This grade is available as electric furnace vacuum degassed steel to meet the high aircraft quality standards of AMS 2301. Thus, it is suitable for the fabrication of parts which may be subjected to magnetic particle inspection.
This grade is also available as a Premium Aircraft Quality product. The regular aircraft quality material is remelted in a vacuum using consumable electrode practice. This results in a much cleaner steel meeting the magnetic particle test requirements of AMS-2300 and insures a steel of the highest quality with excellent transverse ductility and toughness at high strength levels.
UNS G43406, MIL-S-8844 - AMS 6414 - AMS 2300
Color Marking: Ends painted Red with Gold Stripe
Physical Conditions E
Surface Condition 4
Stock Lengths: 12'
Maximum Brinell 265
Intended for parts with sections 3 1/2" or less in thickness at time of heat treatment, which require a through-hardening steel capable of developing minimum hardness of Rockwell "C" 30.
N/A End-quench hardenability values for this grade are Rockwell "C" 50 minimum at 20/16" and Rockwell "C" 45 minimum at 3 2/16"