Matel Finishing Centre - Hard-Chrome Bar

Hard chrome bar is a chromium-plated steel product used primarily as piston rod material in all standard applications in hydraulics and pneumatics. Common applications are found in cranes,dump trucks,lifters,garbage compactors,agricultural machinery and production equipment with movable sections.

Because hard chrome bar is normally used in conditions of high stress,friction and harsh climatic environment,the quality of the base metal and surface treatment are of paramount importance.Wear,impact and corrosion resistance,as well as high yield strength, surface smoothness and uniform quality are most important properties of hard chrome bar.

Diameter tolerances:-

Diameter		Tolerance
mm	inches	mm	inches
Up to 51	Up to 2.0	+0.00-0.025	+0.00-0.001
Over 51-102	Over 2.0-4.0	+0.00-0.050	+0.00-0.002
Over 102	Over 4.0	+0.00-0.025	+0.00-0.003

STANDARD SPECIFICATIONS OF PLATED BARS
~ Chrome Thickness	15 to 20 microns
~ Chrome Surface Hardness	850-1000 HV
~ Surface Finish	RMS 8-12 R.A. : 0.2 - 0.3 micron
~ Tolerance	h³, f², f⁸
~ Straightness	0.2mm / 1000 mm max.
~ Roundness	1/3 of Dia. Tolerance
~ Material Grade	EN - 8D

Size range: Size 19.05mm - 127mm diameter. Sizes outside this range can be quoted against enquiry.

Length: Can be supplied in lengths 3.6 metres to 7.0 metres. Normally in 4.0 metres for sizes 19.05mm to 25.4mm and 6.0 metres for sizes above 25.4mm.

Finish: 0.10 - 0.30 micrometres Ra. Chrome bar is precision ground to achieve a fine finish.

Packing: All Marcrome bars are packaged in cardboard tubes which provide cushioning against impact damage which may occur in handling and transit. All bars are then boxed.