HOW TO CHOOSE THE RAW MATERIAL OF BAND SPRINGS?

the best way to choose the raw materila of band spring should be based on the properity of bearing load,stress,temperature,environmental medium,service life.Processing property.etc.and after make sure the specification of band spring,the best raw material of band spring/rolling shutter spring is that DIN CK67/CK70/CK75/SAE1070/SAE1074

When choose the raw material of band spring,it need to pay more attention to the steel strip's hardenability,it has great effect on the level of full hard and if the raw material of band spring is through quenching or not.

For the raw material of band spring working in high temperature,it require better heat stability by the strength,oxidation resistance,a certain medium corrosion resistance ability.etc.so in this way,the raw material of band spring is need to do the process of heating treament with hardened and tempered.so it is general elected the steel strips of DIN CK67,CK70,Ck75,AISIsae1070,sae1075 as for the raw material of band spring.