hardening and chrome plating bar

SUPPLY CONDITION
Ground and Chrome plated
CHROME THICKNESS
20 TO 40 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)
COHESION
No crack, breaking or detaching after thermic shock (warming up at 300 celsius degrees and cooling in water)
.POROSITY
Test according to ISO1456/1458 and result valuation according to ISO 4540 rating 8-10
CORROSION RESISTANCE
Test in natural salt spray according to ASTM B 117-36 hours
Results evaluation according to ISO 4540 RATING 7-10.
WELD ABILITY