hard chromium piston rod/bar, We produce the high precision steel shaft through cold drawn, grinding and finishing.

hard chromium piston rod/bar

TECHNICAL SPECIFICATIONSteel Grade Chemical Composition% (max) Mechanical Properties (min)C Mn Si P S V Yield Tensile ElongationCK45 0.42/.50 0.50/.80 0.40 0.035 0.030 - 340 600-750 17%(Similar EN8) N/mm2 N/mm2Surface hardness: above 60HRC. Micro crack structure.TOLERANCESDiameter: Up to 20mm dia f8 - Over 20mm dia f7Surface finish: Max 0.2μm Ra. Max 3.0μm RtChrome Thickness: Up to 20mm dia 14μm - Over 20mm dia 20μmStraightness: Better than 0.5mm / 2000mmOvality: Within 1/2 of f7Concentricity: +/- 3μmCORROSION RESISTANCETested in accordance with ISO 9227/4540 neutral salt spray. Rating 8 or 9 at 40 hours.PACKINGAll bars individually sleeved in cardboard or plastic.(Other steel grade and delivery conditions are optional)APPLICATION: HYDRAULIC CYLINDER

hard chromium piston rod