EP 0170598 B1 19900103 - PROCESS FOR MANUFACTURING HOT-ROLLED MARTENSITIC STAINLESS STEEL RODS OR ROD WIRE, AND PRODUCTS OBTAINED
Title (en)
PROCESS FOR MANUFACTURING HOT-ROLLED MARTENSITIC STAINLESS STEEL RODS OR ROD WIRE, AND PRODUCTS OBTAINED
Publication
Application
Priority
FR 8411050 A 19840704
Abstract (en)
[origin: US4594115A] A process for the manufacture of martensitic stainless steel rods or machine wire, and the products thus obtained, by hot rolling, which steel comprises by % weight: C=0.015 to 0.090 N=0.015 to 0.080 with C+N=0.05 to 0.120 Cr=9.0 to 14.0 Nb=</=0.1 V=</=0.1 S=</=0.35 Si=</=1.0 Mn=</=1.0 Ni=</=2.0 Mo=</=1.0 P=</=0.040 Cu=</=1.0 Fe and impurities=balance and having the following mechanical properties: R=900 to 1100 MPa; E 0.2=650 to 850 MPa; A>/=10%; and resilience KCU>/=40 J/cm2, and wherein the preheating or the end of the hot rough preliminary processing preceding the final hot rolling brings the products to a temperature between 1000 DEG C. and 1160 DEG , and wherein the final hot rolling which is effected at a temperature below or equal to 1150 DEG C. produces a section reduction "S/s" which is at least equal to 3, and which reduction is followed by homogenous cooling and when S</=0.08% the rods or machine wire have the following mechanical properties: R=900 to 1100 MPa; E 0.2=650 to 850 MPa; A=12 to 16%; resilience KCU=80 to 140 J/cm2, and the rods or machine wire of the invention are particularly used for the manufacture of corrosion resistant mechanisms.
IPC 1-7
IPC 8 full level
C22C 38/00 (2006.01); C21D 7/13 (2006.01); C21D 8/06 (2006.01); C22C 38/18 (2006.01)
CPC (source: EP US)
C21D 7/13 (2013.01 - EP US); C21D 8/065 (2013.01 - EP US); C22C 38/18 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0170598 A1 19860205; EP 0170598 B1 19900103; AT E49238 T1 19900115; CA 1254062 A 19890516; FR 2567151 A1 19860110; FR 2567151 B1 19861121; JP S6119734 A 19860128; US 4594115 A 19860610
DOCDB simple family (application)
EP 85420123 A 19850703; AT 85420123 T 19850703; CA 485855 A 19850628; FR 8411050 A 19840704; JP 14442885 A 19850701; US 75019085 A 19850701