Percentage of carbon in carbon steel hand instruments is

MATERIALS USED FOR MANUFACTURING CUTTING INSTRUMENTS  Carbon Steel Carbon steel alloy contains 0.5 to 1.5 percent carbon in iron. Instruments made from carbon steel are known for their hardness and sharpness. Disadvantages with these instruments are their susceptibility to corrosion and fracture. They are of two types: 1. Soft steel: It contains <0.5% carbon 2. Hard steel: It contains 0.5 to 1.5% carbon Nisha Garg, Amit Garg. Textbook of Operative Dentistry.  Edition 3. Page: 80