Drilling 4340 steel 4340 Steel Hardness
Watch it break!! 4340 Alloy Steel - AMS 6415 Air Melt Round Bar AMS 6414 Vac Melt Jominy test water quench of 4340 steel 4340 hardened and tempered bar can also be successfully nitrided, giving a surface hardness of up to Rc 60. Nitriding is carried out at 490 oC - 530 oC, Well if you have been watching our video series we now know that what differentiates an aircraft quality "AQ" alloy from a Next up in this series on aircraft quality alloy steels is 4340. Like all 43xx series alloys, Chromium, Nickel, and Molybdenum are Steel 4340 | Tech Steel & Materials ...