EP 0085828 B1 19860730 - USE OF A CARBON-MANGANESE STEEL FOR STRUCTURAL MEMBERS OF HIGH STRENGTH AND TOUGHNESS BY SIMPLE HEAT TREATMENT
Title (en)
USE OF A CARBON-MANGANESE STEEL FOR STRUCTURAL MEMBERS OF HIGH STRENGTH AND TOUGHNESS BY SIMPLE HEAT TREATMENT
Publication
Application
Priority
DE 3201204 A 19820116
Abstract (en)
[origin: EP0085828A1] 1. Use of a steel having 0.3 to 0.6 % carbon 0.2 to 0.6 % silicon 0.55 to 2.5 % manganese 0.05 to 0.2 % vanadium 0 to 0.3 % zirconium 0 to 0.2 % niobium 0 to 0.5 % chromium 0 to 0.5 % nickel 0 to 0.5 % copper 0 to 0.3 % molybdenum 0.01 to 0.05 % sulphur 0 to 0.1 % aluminium 0.0005 to 0.005 % boron 0 to 0.4 % nitrogen less than 0.0003 % hydrogen the rest iron and melting-induced impurities, as a material for components with a cross section from about 40 cm**2 which, after heat deformation by rolling, forging or pressing, or an annealing process at final moulding temperatures up to about 1 000 degrees C or annealing temperatures up to about 1 000 degrees C, and subsequent cooling in still or moving air, if necessary after controlled cooling, have a ferritic-pearlitic structure with approximately 5 to 20% ferrite, the rest pearlite and an interval- or 0.2 border of at least 580 N/nm**2 and an impact energy measured by ISO-U tests of at least 25 J.
IPC 1-7
IPC 8 full level
C22C 38/00 (2006.01); C22C 38/04 (2006.01); C22C 38/12 (2006.01)
CPC (source: EP)
C22C 38/04 (2013.01); C22C 38/12 (2013.01)
Citation (examination)
- VDI-Z, Band 122, Nr. 17, September 1980, S. ENGINEER et al. "Entwicklungen auf dem Gebiet der Stähle für Gesenkschmiedestücke" Seiten 705-711
- Daimler-Benz-Liefervorschrift 4550, Fassung 7. 1975
Designated contracting state (EPC)
FR GB NL
DOCDB simple family (publication)
EP 0085828 A1 19830817; EP 0085828 B1 19860730; DE 3201204 A1 19830811; DE 3201204 C2 19831222; JP H0551653 B2 19930803; JP S58123856 A 19830723
DOCDB simple family (application)
EP 83100080 A 19830107; DE 3201204 A 19820116; JP 237483 A 19830112