Grade:ST 52
Size range:
Inside diameter from 40 to 1000mm,
Max length 20 meters.
Straightness: 0.5 /1000
Tolerance EXT: DIN 2391
Tolerance INT: ISO H8
Roughness(Ra): 0.2 to 0.4µ
Type:cold drawing, normalizing treatment, honing.
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
Marking: JW, 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: -20C, 27 J (only for special requirement)
