The Hardness Of 4140 Chrome Cylinder Rod

 4140 chrome cylinder rod is used extensively by the hydraulic cylinder and pneumatic industries, and is employed by other industry sectors for a wide range of applications requiring higher strength.

4140 is a 1% Chromium - Molybdenum high tensile steel supplied in the hardened and tempered, cold drawn or turned, precision ground, polished, chrome plated and final polished condition, with a typical base metal tensile strength of 850 - 1000 Mpa, plus a typical hard chrome plated surface hardness of HV 1000 - 1150.

Characterized by an extremely smooth surface finish with excellent wear and corrosion resistance, coupled with a base material giving high strength and good impact properties.

4140 hard chrome plated bar has very good machinability, similar to 4140 uncoated bar. Machining however should commence beneath the chrome plating, or at the unchromed surface at the end of the bar. To protect the polished chrome surface, soft materials such as copper, aluminium or mild steel should be used as clamping materials and any particles of hard chrome should be removed immediately to avoid scratching. 

As a professional chrome plated rod factory,Wuxi YUTONG various types of chrome rods/bars/shafts we have in stocks are standard hard chrome rods and induction hardened chromed rods . Other types of steel rods such as nickel-chrome rod and hollow chrome rods are also available on request.