Customized Precision CK45 Induction Hardened Bar For Hydraulic Cylinder

1. Material: CK45, ST52, 20MnV6, 42CrMo4, 40Cr

2. Ground and chrome plated

3. ISO9001:2008

4. Tensile strength: Not less than 610 N/MM2

5. Yield strength: Not less than 355 N/MM2
6:Case depth:1.5mm~2.5mm Induction hardness:HRC55±5

Detailed Description

1.CHEMICAL COMPOSITION

2.MECHANCIAL PROPERTIES

3. SUPPLY CONDITION

Ground and chrome plated

4. CHROME THICKNESS

20 to 30 micron

5. SURFACE ROUGHNESS

Ra≤0.2 micron and Rt≤2 micro

6. TOLERANCES ON DIA

ISO f7 on the diameter

7.OVALITY

Half of the tolerance ISO f7

8. STRAIGHTNESS

≤0.2MM/M

9. SURFACE HARDNESS

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

15. CERTIFICATE

All certificate related with material heat treatment and plating is required

We imported one continous chrome plating line from Italy at the beginning of 2016. With this new chrome plating line, we will improve efficiency and product quality a lot.The new chrome plating line is the first one in China and will be the only one in the next five years!