Super Round Microalloyed Steels Chrome Plated Rod For Cylinder

Product Description

1. The directly turning non-quenched and tempered steel products are developed on the basis of the

proprietary technology of the control rolling and cooling for substituting quenched and tempered

42CrMo4, 40Cr and CK45 with a variety of mechanical performance requirements.
2. It is mainly used for manufacturing injuection molding machine draglink, engineering machinery push

rod and hydraulic prop with the feature that hardened and tempered steel mechanical property

needless quenched and tempered process.
3. the mechanical property is correspond to quenched and tempered 42CrMo4, 40Cr and CK45 or over
them and very uniform on the whole cross section.
4. Turning performance: Turning performance is commensurate to 42CrMo4, 40Cr and CK45 or be
superior to them.
5. Hardness: Hardness is more uniform on the whole cross section than quenched and tempered
42CrMo4, 40Cr and CK45
6. Advantage: Stable and uniform mechanical properties.

Detailed Description

1. MATERIAL: HY4700, HY4520

2. CHEMICAL COMPOSITION(%)

3. MECHANICAL PROPERTIES

4. SUPPLY CONDITION
Ground and chrome plated
5. CHROME THICKNESS
20 to 30 micron
6. TOLERANCES ON DIA
ISO f7 on the diameter
7.OVALITY
Half of the tolerance ISO f7
8. STRAIGHTNESS

≤0.2MM/M

9. SURFACE ROUGHNESS
Ra≤0.2 micron and Rt≤2 micron
10 .SURFACE HARDNESS
850-1150HV (vickers 100g)
11. COHESION

No craks,breaking or detaching after thermic shock(warming up at 300 celsius degrees

and cooling in water)
12 .POROSITY
Test according to ISO 1456/1458 and result yaluation according to ISO 4540 rating 8-10
13. WELDABILITY
Good
14. CORROSION RESISTANCE
Test in natural salt spray according to ASTM B 117-120hours
Results evaluation according to ISO 4540 RATING 7-10
15. PACKING
Anti rust oil to be applied on material and each rod to be packed in paper sleeve
16. CERTIFICATE
All certificate related with material heat treatment and plating is required