The description of SCM440 hard chrome plate rod
SCM440 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.
Characterised by an extremely smooth surface finish with excellent wear and corrosion resistance, coupled with a base
material giving high strength and good impact properties, plus good machinability.
SCM440 hard chrome plated rod is used extensively by the hydraulic and pneumatic industries, and is employed by other
industry sectors for a wide range of applications requiring higher strength.
Typical applications are: Agricultural Equipment, Hydraulic Cylinders, Hoists, Jacks and other Lifting equipment, Machine
Tools, Mining and Earth Moving Equipment, Pumps, Valves, Waste Disposal Transport and Equipment etc
SCM440 hard chrome bar has very good machinability, similar to 4140 uncoated round 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. Otherwise all machining operations may be carried out