Quenched and tempered hard chrome plated steel bar ck45

SPECIFICATION LENGTH: 6 ～12 800-2000mm
16 ～40 1200-4000mm
45 ～220 1500-8000mm
SUPPLY CONDITION: Ground and chrome plated
CHROME THICKNESS: 20 to 30 micron
SURFACE ROUGHNESS: Ra≤0.2 micron and Rt≤2 micron
TOLERANCES ON DIA: ISO f7 on the diameter
OVALITY: Half of the tolerance ISO f7
STRAIGHTNESS: ≤0.2MM/M
SURFACE HARDNESS: 850-1150HV (Vickers 100g)
TENSILE STRENGTH: 600 N/mm2
YIELD STRENGTH: 380N/MM2
ELONGATION (%): 17
CHARPY: 41J