3Cr13

steel round bar is divided into hot rolled round bars and forged round bars. and AISI 420S45, JIS SUS420J2 is the same material. So steel round bar is also called AISI 420S45/JIS SUS420J2 steel round bar.

is Martensitic type stainless steel, under the standard of GB/T1220-1992,and new standard GB/T 1220-2007 30Cr13
mechanical processing performance is good, after heat treatment (quenching tempering), it has excellent corrosion resistance and wear resistance, it is suitable for manufacturing some plastic mold parts which can understand high load, high wear resistance and corrosion medium . round bars are mainly used as Rj, nozzle, valve seat, valve, etc.
EAF ARC FURNACE + LF REFINING+ VD + forged (DOUBLE) + FIXED LENGTH + SEP1921C/c TESTING

The delivery condition round bar are:hot rolled or forged + Normalizing+Tempering+Quenching and tempering+Normalizing and tempering+Annealing .

The size for round bar which are available for our KUNFENG steel are Ф 5-80 for hot rolled round bar and Ф 80-1200 for forged round bar ,the length range is from 3000 to 12000mm.

The tolerance of the diameter is -0/+3mm ,The tolerance of the length is -0/+20mm.and the straightness tolerance is ≤3mm/m surface delivery status: black/polishing/turning

The UT standard what we can do are Chinese standard of GB/T 6402 I.II,III and export standard SEP1921 CLASS C/C，D/D，E/E.

The more information of hot rolled and forged round bar shown in the following table:

The Chemical composition of the hot rolled and forged round bar analysis -% by mass

The Mechanical properties of the hot rolled and forged round bar .

are engineered to be used in hot rolled round bars and forged round bars .As the professional Chinese hot rolled round bars and forged round bars supplier.We will supply our customers the best quality with the the competitive price ,the best service and rapid delivery time.If you purchase the hot rolled round bars and forged round bars ,we support you to pay a visit to our company and do inspection. If you have any need ,you are welcome to contact me .We are sincerely looking for your cooperation.