AUSTENITIC HEAT RESISTANT STAINLESS STEEL WITH EXCELLENT HOT WORKABILITY

PURPOSE: Austenitic heat resistant stainless steel is provided to ensure excellent high-temperature oxidation resistance and hot workability by employing an alloy component system of 22%Cr-12%Ni-1.5%Si-0.2%N. CONSTITUTION: Austenitic heat resistant stainless steel comprises 0.05-0.15 weight% of C,1....

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Hauptverfasser:	BYUN, SUN MIN, KIM, KYUNG SEOK, PARK, SUNG BAE, LEE, JONG SEOG
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	ALLOYS CHEMISTRY FERROUS OR NON-FERROUS ALLOYS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	PURPOSE: Austenitic heat resistant stainless steel is provided to ensure excellent high-temperature oxidation resistance and hot workability by employing an alloy component system of 22%Cr-12%Ni-1.5%Si-0.2%N. CONSTITUTION: Austenitic heat resistant stainless steel comprises 0.05-0.15 weight% of C,1.0-2.5 weight% of Si, 0.5-2.0 weight% of Mn, 21-25 weight% of Cr, 10-14 weight% of Ni, 0.1-0.3 weight% of N, 0.01-0.06 weight% of Ce, 0-0.5 weight%(0 is exclusive) of Mo, and the remaining amount of Fe and inevitable impurities. The hot workability index of the austenitic heat resistant stainless steel, which is obtained by the following formula, 104 + 14.9 Si - 25.4 Mn - 3.66 Cr + 3.35 Ni - 56.9 Mo + 1212 Ce, is 60 or greater.