Alloy Steel Housing with Cylindrical Housing Component and Stepped Concentric Bosses, Flange Holes

Alloy steel grade selection for a cylindrical housing component with stepped concentric bosses and flange holes determines both machinability and service hardness; 4140 provides the tensile strength for housing sections under dynamic load and machines cleanly to tight bore tolerances in the annealed condition before heat treatment, while 4340 is specified for housings in high-fatigue aerospace or military applications. Suzhou Dazhi Intelligent Manufacturing Technology (Suzhou, Jiangsu) CNC-mills and turns this alloy steel cylindrical housing component with stepped concentric bosses and flange holes using CNC milling, turning, and internal cylindrical grinding at their facility (some 4,000 m²), with boss OD concentricity, bore ID, and flange hole true position confirmed against your released dimensions during in-process inspection. Dazhi's Suzhou facility specialises in non-standard automation parts, aerospace components, and military parts for automation, aerospace, military, and contract manufacturing applications. Provide boss dimensions, bore ID tolerance, hole positions, and alloy steel grade and your drawing for quoting. And we will return a pricing from our suzhou team. Applications cover automotive, medical equipment, and robotics.