high carbon steel spring

Description

1. grade:CK*0/CK*0/CK*7/CK*0/CK*5, C*5Cr1, *0CrV4, *0Si2Mn. 2.Sepecification: 0.*5mm- 2.5mm 3.Width:8mm***0mm 4.Surface treatment: heat treatments. 5.Standard of reference:GB, DIN, JIS. 6.steel of surface:Polished , blue, yellow, white, gery-blue, black, bright, nature. 7.useful:, material used in rolling shutter spring , rolling door, band saw, putty, shoe material accessories, shoe toe cup, shoe shank , hooks , knift , spring clips, autoparts, constant force spring, clock main spring, toy spring , power spring, steel for clock spring, power springs, recliner spring, feeler gauges, doctor blades 8.Hardness:****8HRC for cold rolled process, ****5HRC for hardened and tempered process, below *0Hrc for annealed process. 9.Packing: Each coil with anti-rust paper wrapped and plastic film with material pallet and put into *0ft container or standard sea worthy.