JIS sup9 sup9a sup10 spring steel round bar/flats bar

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Product Overview

Description


 


 


 



Product Description


 SUP9 SUP9A SUP10  Hot rolled spring sterel round bar 




 


1.Main grade:SUP9 SUP9A SUP10 SUP11 SAE5160 38Si7 55Cr3 50CrV4 50CrVA 60CrMn 60Si2Mn


 


2.Chemical composition:


 






















































































Grade



C



Si



Mn



Cr



P



S



Cr



SUP9



0.52-0.60



0.15-0.35



0.65-0.95



0.65-0.95



Max 0.030



Max0.030



  --



SUP9A



0.56-0.64



0.15-0.30



0.70-1.00



0.70-1.00



Max 0.030



Max0.030



  --



SUP10



0.47-0.55



0.15-0.35



0.65-0.95



0.70-1.00



Max 0.030



Max0.030



  --



SAE5160



0.56-0.64



0.15-0.35



0.75-1.00



0.70-0.90



Max 0.030



Max0.030



  --



38Si7



0.35-0.42



1.50-1.80



0.50-0.80   



    --



Max 0.030



Max0.030



  --



55Cr3



0.52-0.59



0.25-0.50



0.70-1.00



0.70-1.00



Max 0.030



Max0.030



  --



50CrV4



0.47-0.55



Max 0.40



0.70-1.10



0.90-1.20



Max 0.030



Max0.030



0.10-0.25



 


 


 


3.Main standard


 


DIN17221,DIN EN10132-4, ASTM A322,JIS G4801


 


4.Quality Control Process 


 


1)Production Line 


 


 Blast Furnace Melton Iron → EAF(EBT/BOV) → LF → VD → Molten Steel → Continuous Casting → Hot Rolling(KOCKS)  → Further Processing


 


(Cold Drawn/Peeling/Turning) (as customer’s option)


 


2)Gas Contents:


 
















Oxygen



Nitrogen



Hydrogen



20ppm(max)



90ppm(max)



2ppm(max)



 


3)Macrostructure


 


As per ASTM E 381 Plate,steel shae be better than C2,RTR2,S2


 


1)Microstructure


 


Microstructure of any sample from steel bars:shall be of uniform freeite and pearlite with good machinability.


 


Microstructure shall be of free from undesirable bandings of freote and pearlite.


 


Crain size of as per ASTM E112 shall be of 5~8.


 


 


 


 


5.Avaiable size 


 














Hot rolled round bars



16mm to 120mm



Cold drawn bars



14mm to 60mm



 


 


 


6.Supply condition Surface Treatment: Polishing,Peeling, Turning, Grinding, Milling, Drilling, Boring


 


Heat Treatment: Normalizing, Annealing, Quenching+ Tempering


 


7.Straightness: 3mm/m(max)


 


 



Packaging & Shipping


 




8.Packaging:seaworthy packaging by wire rod,every bunled is about 3-5MT,or as customers request,each end of the bar has to be machine cut


 


 



Our Services


 




9.our  service


 


 Contacts person:Ms.Sunny Sun


 


 WECHAT:361325226


 


 S-kype:sunny88962


 


 WHATSAPP/CELL:86 13963407991


 


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0.1973 s.