4340 is a heat treatable, low alloy steel containing nickel, chromium and molybdenum. It is known for its toughness and capability for high strength in the heat treated condition while retaining good fatigue strength. Typical applications for structural use are aircraft landing gear, power transmission gears, shafts and other structural parts.
Specification | Description |
---|---|
AMS 6359 | Steel Plate, Sheet, Strip and Coil. |
AMS 6409 | Steel Bars, Forgings, and Tubing, Special Aircraft Quality Cleanliness. |
AMS 6414 | Steel Bars and Forgings, Vacuum Arc Re-Melted |
AMS 6415 | Steel Bars and Forgings. |
AMS 6454 | Steel Sheet, Strip, and Plate. Vacuum Arc Re-Melted. |
AMS 6484 | Steel Bars and Forgings. Normalized and Tempered |
BMS7-28 | Steel Bars and Forgings. Aircraft Quality. |
DMS 1555 | Steel Bars and Forgings. Aircraft Quality. |
MIL-S-5000 | Steel Bars and Forgings. |