High Strength Steel Thread Rod Instead Of Quenched And Tempered Rod For Cylinder

High Strength Steel Thread Rod Instead Of Quenched And Tempered Rod For Cylinder
 
Product Description
1. Stable and uniform mechanical properties.
2. Save manufacturing expenses and avoid waste in the tempering process.
4. Shortened processing periods, enhance productivity and reduce the occupied capital.

4. Low processing cost, needless quenched and tempered process and the second turning
5. Energy conservation: Production no quenched and tempered process greatly saves the energy
    consumption.
6. Environments protection: Production no quenched and tempered process meets the requirements of
    environmental protection.
 
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 .SURFACE HARDNESS 
     850-1150HV (vickers 100g)
7. SURFACE ROUGHNESS
     Ra≤0.2 micron and  Rt≤2 micron
8. STRAIGHTNESS 
   ≤0.2MM/M

9. TOLERANCES ON DIA
     ISO f7 on the diameter
10.OVALITY 
    Half of the tolerance ISO f7
 11. COHESION 

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

    and cooling in water)
12. CORROSION RESISTANCE
     Test in natural salt spray according to ASTM B 117-120hours
     Results evaluation according to ISO 4540 RATING 7-10

13 .POROSITY
      Test according to ISO 1456/1458 and result yaluation according to ISO 4540 rating 8-10

14. WELDABILITY
     Good 
15. CERTIFICATE 
      All certificate related with material heat treatment and plating is required 

16. PACKING 
     Anti rust oil to be applied on material and each rod to be packed in paper sleeve