AUSTENITIC HEAT-RESISTANT CAST STEEL

• Main Authors: MAESHIMA TAKASHI, NISHINO KAZUAKI, UEDA TAKAMICHI, HIRAI HITOMI, HIJII TAKUMI, ITO HIROFUMI, UENO HARUMI
• Format: Patent
• Language: Chinese; English
• Published: 02.01.2018
• Subjects: ALLOYS; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; METALLURGY; TREATMENT OF ALLOYS OR NON-FERROUS METALS

Provided is an austenitic heat-resistant cast steel that is superior both in heat-resistance and machinability. The austenitic heat-resistant cast steel contains C by 0.1-0.4 mass%, Si by 0.8-2.5 mass%, Mn by 0.8-2.0 mass%, S by 0.05-0.30 mass%, Ni by 5-20 mass%, N by not more than 0.3 mass%, Zr by 0.01-0.20 mass%, Ce by 0.01-0.10 mass%, and including one or more selected from the group consistingof (i)-(iii) but at least including (i) ((i) Cr by 14-24 mass%, (ii) Nb by not more than 1.5 mass%, (iii) Mo by not more than 3.0 mass%), and the remaining portion comprising Fe and unavoidable impurities. 提供耐热性和切削性两者优异的奥氏体系耐热铸钢。奥氏体系耐热铸钢包含：C：0.1～0.4质量％、Si：0.8～2.5质量％、Mn：0.8～2.0质量％、S：0.05～0.30质量％、Ni：5～20质量％、N：0.3质量％以下、Zr：0.01～0.20质量％、Ce：0.01～0.10质量％、选自下述(i)～(iii)的、至少包含(i)的种以上：(i)Cr：14～24质量％、(ii)Nb：1.5质量％以下、(iii)Mo：3.0质量％以下，并且余量为铁以及不可避免的杂质。