Hydraulic Sylinder Hard Chrome Plated steel Rod and round bars
1.Chemical Composition
| Material | C% | Mn% | Si% | S% | P% | Cr% |
| Ck45 | 0.42-0.50 | 0.50-0.80 | 0.17-0.37 | 0.035 | 0.035 | 0.25 |
2.Mechancial Properties
| Material | T.S N/MM2 | Y.S N/MM2 | E%(MIN) | CHARPY | CONDITION |
| CK45 | 610 | 355 | 15 | >41J | NORMALIZE |
| CK45 | 800 | 630 | 20 | >41J | Q + T |
3. Supply Condition
Ground and chrome plated
4. Chrome Thickness
20 to 30 micron
5. Surface Roughness
Ra 0.2 micron (max)
6. Tolerance on DIA
ISO f7 on the diameter
7.Ovality
Half of the tolerance ISO f7
8. Straightness
0.2/1000mm
9. Hardness of the chrome layer
850-1150HV (vickers 100g)
10. Cohesion
No cracks,breaking or detaching after thermic shock(warming up at 300 celsius degrees and cooling in water)
11. Porosity
Test according to ISO 1456/1458 and result yaluation according to ISO 4540 rating 8-10
12. Corrosion Resistance
Test in natural salt spray according to ASTM B 117-72hours
Results evaluation according to ISO 4540 RATING 7-10
13. Weldability
Good
14. Packing
Anti rust oil to be applied on material and each rod to be packed in paper sleeve
