FERRITE HEAT RESISTANT STEEL

专利名称：FERRITE HEAT RESISTANT STEEL发明人：HIRATA, HIROYUKI,YOSHIZAWA,

MITSURU,OGAWA, KAZUHIRO,IGARASHI,MASAAKI

申请号：EP08764663申请日：20080526公开号：EP2157202A4公开日：20110914

摘要：There is provided a heat resistant ferritic steel, excellent in the weld crackresistance of the HAZ and creep strength. A high-Cr heat resistant ferritic steel is

characterized by consisting of, by mass%, Si: more than 0.1% and not more than 1.0%, Mn:2.0% or less, Co: 1 to 8%, Cr: 7 to 13%, V: 0.05 to 0.4%, Nb: 0.01 to 0.09%, either one orboth of Mo and W: 0.5 to 4% as a total, B: 0.005 to 0.025%, Al: 0.03% or less, and N: 0.003to 0.06%, and containing C in an amount satisfying Expression (1), the balance being Feand impurities, and O, P and S as impurities being such that O: 0.02% or less, P: 0.03% orless, and S: 0.02% or less, respectively, 0.005 ‰¤ C ‰¤ - 5 / 3 × B + 0.085 in which C and Brepresent the content of each element (mass%). Furthermore, the high-Cr heat resistantferritic steel may contain one or more kinds selected from the group consisting of Nd,Ta, Ca and Mg.

申请人：SUMITOMO METAL INDUSTRIES, LTD.

更多信息请下载全文后查看