Stress Relieved DIN 2391 ST52 Precision seamless tubes for automotive industry
DIN2391 ST52 Seamless precision tube produced with cold drawn and stress relieved is widely used in the automotive industry for the production of engine parts, brake systems, shock absorbers, exhaust systems and other components that require high dimensional and quality precision. according to EN 10305-1: E215, E235, E355 other material according to client's need according to DIN 2391: St35, St45, St52 Delivery condition and thermal processing according to EN and DIN (DIN designation given in the brackets): +C (BK) Cold drawn / hard (after the last cold forming no heat treatment) +LC (BKW) Cold drawn/ soft (the last heat treatment is followed by cold drawing) +SR (BKS) Cold drawn and stress relieved annealed (after the final cold drawing process the tubes are stress relieved annealed in a cotrolled atmosphere) +A (GBK) Annealed (after the last cold drawing process the tubes are annealed in a controlled atmosphere) +N (NBK)...