EP 0348380 B1 19921119 - USE OF AN IRON-BASE ALLOY IN THE MANUFACTURE OF SINTERED PARTS WITH A HIGH CORROSION RESISTANCE, A HIGH WEAR RESISTANCE AS WELL AS A HIGH TOUGHNESS AND COMPRESSION STRENGTH, ESPECIALLY FOR USE IN THE PROCESSING OF SYNTHETIC MATERIALS
Title (en)
USE OF AN IRON-BASE ALLOY IN THE MANUFACTURE OF SINTERED PARTS WITH A HIGH CORROSION RESISTANCE, A HIGH WEAR RESISTANCE AS WELL AS A HIGH TOUGHNESS AND COMPRESSION STRENGTH, ESPECIALLY FOR USE IN THE PROCESSING OF SYNTHETIC MATERIALS
Publication
Application
Priority
AT 159988 A 19880621
Abstract (en)
[origin: EP0348380A1] Use of an iron-based alloy for the production of sintered parts of high corrosion resistance, high wear resistance, high toughness and high compressive strength, in particular for processing plastics, having a composition, in % by weight, chromium 16.0-29.0, molybdenum 0.4-2.5, tungsten 0.3-2.0, vanadium 3.0-10.0, titanium up to 5.0, aluminium up to 1.0, boron up to 0.05, nitrogen 0.01-0.18, niobium up to 5.0, iron and preparation-related impurities as the remainder, the value formed from (% of Cr - 13) + 4.4 x (% of V - 3) + 2 x (% of Nb) + 4.2 x (% of Ti) being greater than 8.8, and the minimum carbon content of the alloy corresponding to the correlation Cmin = 0.3 + [(% of Cr - 13) x 0.06] + [(2 x % of Mo + W) x 0.03] + (% of V x 0.24) + (% of Nb x 0.13) + (% of Ti x 0.25) and the maximum carbon content of the alloy corresponds to the correlation Cmax = 0.7 + [(% of Cr - 13) x 0.06] + [(2 x % of Mo + W) x 0.03] + (% of V x 0.24) + (% of Nb x 0.13) + (% of Ti x 0.25), with the proviso that the matrix has a chromium content of at least 13% after hardening and annealing, and the carbide content is at least 25% by volume, the carbide grain size being less than 14 mu m and at least 5 % by volume of the carbides being in the form of MC carbides.
IPC 1-7
IPC 8 full level
B22F 3/24 (2006.01); C22C 33/02 (2006.01); C22C 38/00 (2006.01); C22C 38/32 (2006.01)
CPC (source: EP)
C22C 33/0285 (2013.01)
Designated contracting state (EPC)
AT BE CH DE ES FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0348380 A1 19891227; EP 0348380 B1 19921119; EP 0348380 B2 19960417; AT 393642 B 19911125; AT A159988 A 19910515; AT E82595 T1 19921215; AU 3666289 A 19900125; AU 615756 B2 19911010; DE 58902742 D1 19921224; ES 2052971 T3 19940716; ES 2052971 T5 19961001; JP 2583451 B2 19970219; JP H0277556 A 19900316; PT 90925 A 19891229; PT 90925 B 19971031; ZA 894703 B 19920129
DOCDB simple family (application)
EP 89890163 A 19890614; AT 159988 A 19880621; AT 89890163 T 19890614; AU 3666289 A 19890620; DE 58902742 T 19890614; ES 89890163 T 19890614; JP 14432389 A 19890608; PT 9092589 A 19890621; ZA 894703 A 19890621