sk5 sk85 hardened and tempered steel strips is made of heat treatment with hardened and tempered process,the hardening process involves heating the steel strip to above the critical transformation temperature for the given grade and then rapidly coolling,the steel strips in this condition is extremely brittle and requires further treatment in the tempering.then strips are reheated to a lower temperature and hold it at teh given temperaure for a period of time,this process is done in a intert atmosphere to avoid oxidation.this type of sk5 sk85 hardened and tempered steel strips has high degree of toughness and has excellent spring properties,and in this way can work well with band saw blade,knives blade.etc
Tolerance on Straightness
Straightness deviation is specified in millimeters and defined as lateral deviation of the edge from a straight line as shown in the graphic.The straightness deviation is stated as edge camber(bow) and measured over a strip length of 1 or 3 meters. Straightness tolerance depends on the strip width and is given as one of five straightness classification groups (R).
