Hard chrome plated around bar :
1.. Supply condition
Ground and chrome plated
2. Chrome thickness
20 to 30 micron
3. Surface roughness
Ra0.2 micron and rt2 micro
4. Tolerances on dia
Iso f7 on the diameter
5.Ovality
Half of the tolerance iso f7
6. Straightness
0.2mm/m
7. Surface hardness
850-1150hv (vickers 100g)
8.Cohesion
No cracks, breaking or detaching after thermic shock(warming up at 300 celsius degrees and cooling in water)
9 .Porosity
Test according to iso 1456/1458 and result yaluation according to iso 4540 rating 8-10
10 corrosion resistance
Test in natural salt spray according to astm b 117-72hours
Results evaluation according to iso 4540 rating 7-10
11. Weldability
Good
12. Packing
Anti rust oil to be applied on material and each rod to be packed in paper sleeve