Wuxi YUTONG as Professional manufacturer of hydraulic cylinder parts, we often received clients’s inquiry of 4340 tubes and rods, especially 4340 honed tubes ,4340 chrome plated tubing AISI 4340 steel is a low alloy steel that contains Nickel, Chromium and Molybdenum as strengthening agents. 4340 steel can also be hardened through heat treatment. Flame and induction hardening is the type of heat treatment that works with 4340. 4340 offers better hardenability and improved impact toughness over 4140.
Alloy 4340 can obtain deep hardenability. This is important when higher strength is needed in heavy sections. Thus 4340 assures maximum toughness as well as ductility at a given strength level. 4340 is perfect because it maintains its properties at high temps. 4340 steel can be machined in either annealed or normalized and tempered conditions through most all conventional machining techniques. 4340 is available in Round Bar and Tubing.
4340 chrome plated tubing typical applications include aircraft landing gears, power transmission gears, cylinder shafts, chucks, molds, drilling parts, sprockets, and other structural parts.