Chemical composition(%)

 

Si(Max)	Mn (Max)	C Max)	P (Max.)	S (Max)
0.55	1.60	0.22	0.025	0.025

Mechanical properties:

 

Tensile strength Min	Yield Point Min	Elongation % Min
580 N/mm2	420 N/mm2	10

Excentricity:

 

Outer Diameter	Excentricity
125 mm	5 %
> 125 mm	7 %

measured according to the formula:
E = (max Wt – min Wt)/( max Wt + min Wt) x 100 %

Bore Ovality

The bore ovality is comprised in the 50 % of the inside diameter tolerances. 

Marking: SunnySteel, ID, OD
Length: unfixed length or fixed length 
Package: banding with steel strips, braiding parcel at outside
Conservation: Anti rust oiled coating on the inside and outside of the surface, plastic caps at both ends.
Impact test: -20℃, 27 J (only for special requirement)