EP 2557196 A1 20130213 - BAINITIC STEEL FOR MOULDS
Title (en)
BAINITIC STEEL FOR MOULDS
Title (de)
BAINITSTAHL FÜR GUSSFORMEN
Title (fr)
ACIER BAINITIQUE POUR MOULES
Publication
Application
Priority
- BR PI0901378 A 20090403
- BR 2010000121 W 20100408
Abstract (en)
1 "BAINITIC STEEL FOR MOULDS", with a composition of alloy elements that consist, in mass percentage, of Carbon between 0.05 and 1.0; Manganese between 0.5 and 3.0; Phosphorous, Boron, Titanium and Vanadium given by the ratio NU = [Ti + P + 10 B + (V-0.10)], being the values of NU between 0.02 and 0.30, with titanium always above 0.005, boron always below 0.010 and Vanadium may be partially or totally replaced with Niobium, in the proportion of two parts in mass of niobium for one part of Vanadium; Nickel, Molybdenum and Chromium given by the ratio G = [0.13 Ni + 0,60 Mo + 0.26 Cr], with values of G above 0.10 and below 1.0; Sulphur up to 0.10; Silicon between 0.05 and 3.0; Nitrogen below 0.10; Calcium with contents up to 0.02; Aluminum below 0.5, Cobalt lower than 2.0, the remaining being substantially Iron and impurities that cannot be avoided in the elaboration process; for its production the final hardness may be obtained by calm air cooling, directly after hot conformation or by previous heating in furnace, even in blocks with section up to 1000 mm; the values of hardness, in Vickers scale, are defined by the equation: HV = (450 ± 140) %C + (210 ± 45), for values between 280 and 450 HV (30 to 45 HRC); for applications of high toughness, the steel of present invention may also be produced with quick cooling, from temperatures above 900°C, in water or oil mediums.
IPC 8 full level
C22C 38/54 (2006.01); C21D 9/00 (2006.01); C22C 38/00 (2006.01); C22C 38/12 (2006.01); C22C 38/58 (2006.01)
CPC (source: EP KR US)
C21D 1/02 (2013.01 - EP KR US); C21D 6/005 (2013.01 - EP KR US); C22C 38/001 (2013.01 - EP KR US); C22C 38/002 (2013.01 - EP KR US); C22C 38/02 (2013.01 - EP KR US); C22C 38/06 (2013.01 - EP KR US); C22C 38/44 (2013.01 - EP KR US); C22C 38/46 (2013.01 - EP KR US); C22C 38/50 (2013.01 - EP KR US); C22C 38/54 (2013.01 - EP KR US); C22C 38/58 (2013.01 - EP KR US); C21D 2211/002 (2013.01 - EP US)
Citation (search report)
See references of WO 2011120108A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
DOCDB simple family (publication)
US 2012288397 A1 20121115; BR PI0901378 A2 20101221; CA 2757754 A1 20111006; CN 102439190 A 20120502; CN 102439190 B 20141231; EP 2557196 A1 20130213; JP 2013523999 A 20130617; KR 20120125945 A 20121119; MX 2011010440 A 20111104; RU 2011140167 A 20130420; WO 2011120108 A1 20111006; WO 2011120108 A8 20111124; ZA 201107591 B 20120627
DOCDB simple family (application)
US 201013262548 A 20100408; BR 2010000121 W 20100408; BR PI0901378 A 20090403; CA 2757754 A 20100408; CN 201080022236 A 20100408; EP 10848625 A 20100408; JP 2012515294 A 20100408; KR 20117023198 A 20100408; MX 2011010440 A 20100408; RU 2011140167 A 20100408; ZA 201107591 A 20111017