NiCrFe ALLOY

文件类型：PDF文档
文件大小：291K
A NiCrFe alloy having excellent creep strength and stress relaxation cracking resistance is provided. The NiCrFe alloy according to the present invention has a chemical composition consisting of, in mass%, C : 0.03 to 0.15%, Si : not more than 1.00%, Mn : not more than 2.00%, P : not more than 0.040%, S : not more than 0.0050%, Cr : 18.0 to 25.0%, Ni : 25.0 to 40.0%, Ti : 0.10 to 1.60%, Al : 0.05 to 1.00%, N : not more than 0.020%, O : not more than 0.008%, and rare earth metal (REM) : 0.001 to 0.100%, with the balance being Fe and impurities, the chemical composition satisfying Formulae (1) to (3) : 0.50≤Ti+48⁢Al/27≤2.200.40≤Ti/Ti+48Al/27≤0.80∑REM/AREM−S/32−2/3·O/16≥0 where, each symbol of element in the formulae is substituted by the content (mass%) of the corresponding element, and A(REM) in Formula (3) is substituted by the atomic weight of each rare earth metal.