CDP Bharat Forge has carried out a substantial alloy and process development on microalloyed steels for controlled cooling. The main focus was put on the introduction of this development into series production of parts that were 100% heat treated before. The R+D-activities resulted in the new grades cdpSo38 and cdpSo40. For the grade cdpSo38 an impact energy of >25J (RT) and an elongation of >14% can be guaranteed for the series production of safety critical chassis parts at a yield strength of >600MPa. For the cdpSo40 a yield strength of >700MPa at 10% elongation can be guaranteed in series production. Two of the biggest truck manufacturers in the world have already changed their steering knuckles from heat treated steels 42CrMo4 and 30MnB5 to the new cdpBF-grades.
New microalloyed steels for heavy duty forgings in cars and trucks
Neue mikrolegierte Stähle für schwere Schmiedestücke in Personen- und Lastkraftwagen
2005
8 Seiten, 6 Bilder, 10 Quellen
Aufsatz (Konferenz)
Englisch
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