Size: 12-140mm Length:  3m -8m  Material:  45# DIN CK45/JIS 45C Tolerance ISO f7  Chrome thickness:  20~30micron Hardness of the chrome layer: 850HV(min) Roughness:  Ra 0.2micron (max) Straightness:  0.2/1000mm Yield Strength 320 Mpa Tensile Strength 580 Mpa Elongation 15% Supply condition:  1. Hard chrome plated 2. Induction hardened 3. Quenched &  Tempered 4. Induction hardened with Q&T
