This strip is appropriate for springs having lower thickness and requires High tensile strength. These strips are produced in thickness range of 0.60 mm to 0.20 mm and width range of 100 – 5 mm, in different edge conditions and surface finish such as scaleless Grey, bright polished, blue polished, yellow (straw golden) polished.

This is used in Constant force spring, Clock Main Spring, Toy Springs, Power Spring, Steel for Clock Spring, Powersprings, recliner Springs, feeler Gauges, Doctor blades, etc.

This grade compares well with
AISI 1095
CK 101
EN44D
8-98c6 of IS2507 of 1975
SK4