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The Cylinder Service
Centre Ltd

Sedling road,
Wear Industrial Estate,
Washington,
Tyne & Wear,
NE38 9BZ

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Cylinder Design Glossary

Piston Rod Materials

Off-the-Shelf Materials

Chrome plated CK45 normalised steel

This has mechanical properties of <370 Yield (Re) & 625/775 (Rm) Tensile.

Chrome plated 20MnV6 normalised steel

This has mechanical properties of <450 Yield (Re) & 540/710(Rm) Tensile.

Chrome plated 42CrMo4 'T' condition steel

This has mechanicals of <730 Yield (Re) & 880/1150(Rm) Tensile. 42CrMo4 'T' is supplied with a 20-25 micron deposit of hard chrome plate ground to f7 ( 0.25 Ra max). Corrosion resistance: Acetic salt spray ISO3769 rating 9 @ 40 hrs. Surface hardness 900/1050 HV)

Nikrom 350 Nickel/Chrome plated 20MnV6 normalised steel

This has mechanical properties of 350<520 Yield (Re) & 550/700 (Rm) Tensile. It is supplied with a 30 micron nickel underlay & 20 micron deposit of hard chrome plate ground to f7 ( 0.25 Ra max). Corrosion resistance : Neutral salt spray ISO9227 rating 10 @ 1000hrs. Surface hardness 850 HV.

Stainless Steel Piston Rod Materials

Chrome plated 431S29`T`condition Stainless steel. This has mechanical properties of <680 Yield (Re) & 850/1000(Rm) tensile. It is supplied with a 20-25 micron deposit of hard chrome plate ground to f7 (0.25 Ramax). Corrosion resistance: Acetic salt spray grade 10 rating @ 500 hrs. Surface hardness 1100-1200 Vickers

Maximum Standard Lengths

Standard lengths available up to 7 meters

Specialised Materials

For specialised applications, piston rods can also be manufactured from any specified materials such as:

  • 17-4ph Stainless steel,
  • Super Duplex,
  • 316L Stainless steel
  • any other practical material.

Piston Rod Coating

Piston rod coating can be undertaken in a number of ways. Common options are:

  • Micro cracked flash Hard chrome ( Standard off the shelf)
  • Duplex Hard Chrome plated ( double layer)
  • Heavy deposit Hard chrome layer ( re-chroming or chroming finished article as it cannot be machined)
  • Hard chromed with a Nickel base deposit. ( Marine specification)
  • Hard chromed with a Bronze base deposit. ( Marine specification)
  • Ceramic coated ( Corrosion, abrasion resistant)

Cylinder bodies and Cylinder barrel materials

ST52.3 E55 cold drawn material

This has mechanical properties of: Yield >580N/mm & >620 N/mm Tensile.

ST52.E55 cold drawn material

This has mechanical properties of: Yield >520N/mm & >580 N/mm Tensile.

ST52.0 E55 hot rolled material

This has mechanical properties of: Yield >340N/mm & >500-650 N/mm Tensile.

Special tubes

Cylinder barrels or tubes can also be manufactured from virtually any material e.g.:

  • stainless steels,
  • forged bar etc.

Cylinder barrel and cylinder tube finishing

  • ST52 Honed bore cylinder tube tolerance on the bore H8>H10,
  • Surface finish 0.30 Ra micron max.