Super Round Microalloyed Steels Chrome Plated Rod For Cylinder

 
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