хром пластины стержень

chrome plate rod MATERIAL CK45 CHEMICAL COMPOSITION (%) C Mn Si S P 0.40-0.50 0.60-0.90 0.035 0.035 0.035 MECHANICAL PROPERTIES UTS Min Y.S. Min E % Min CHARPY CONDITION 630 N/mm2 340 N/mm2 16 NORMALISED 600 N/mm2 380 N/mm2 17 41J HARDENED AND TEMPERED SUPPLY CONDITION Ground and Chrome plated CHROME THICKNESS 20 TO 40 Micron SURFACE ROUGHNESS Ra ≤0.2 Micron and Rt≤2 Micron TOLERANCES ON DIA ISO f7 on the diameter OVALITY Half of the tolerance ISO f7 STRAIGHTNESS ≤0.2mm/m SURFACE HARDNESS 850-1150HV (Vickers 100g) COHESION No crack, breaking or detaching after thermic shock (warming up at 300 celsius degrees and cooling in water) POROSITY Test according to ISO1456/1458 and result valuation according to ISO 4540 rating 8-10 CORROSION RESISTANCE Test in natural salt spray according to ASTM B 117-36 hours Results evaluation according to ISO 4540 RATING 7-10.