Place of Origin
Guangdong, China
Grade
CK67 CK75 C75S 51CrV4 CK45 SAE 1050 SK5
Oiled or Non-oiled
Non-oiled
Application
metal part saw blade roller shutter spring
hardness
29-55HRC for hardened and tempered, below 19HRC for annealed
Steel Grade
SK85 65mn SK5 C50 C55 C60 C65 C62 C67 C70 C75 C80 C95 60SI2MN 51CrV4
Surface Treatment
nature white bright polish blue yellow