Shim Steel is used in applications where hardness, flatness and accuracy are required. This material can be punched or sheared with minimum burring and distortion. Additional features: This steel shim stock is a full hard, cold rolled, low carbon 1010. Rockwell hardness RB90-100. Approx. tensile strength: 80,000 p.s.i. #2 bright finish. All type numbers listed are 6" x 100" rolls.