| 摘要 |
PROBLEM TO BE SOLVED: To provide a high temperature corrosion resistant member and a heat exchanger which have a small risk of occurrence of abnormal corrosion even when, in an atmosphere where ash containing alkali sulfates (NaSO, KSO) is present, exposed to a high temperature equal to or higher than the eutectic point (832°C) of the alkali sulfates.SOLUTION: A high temperature corrosion resistant member is exposed to a temperature equal to or higher than 832°C. The high temperature corrosion resistant member comprises, by mass%, 45-50% Ni, 32% or more and 36% or less Cr, 4.5-5.5% Mo, 2.5-6% Si, 0.1-0.3% C, and the balance of Fe and inevitable impurities. Consequently, since the content of Cr is not less than 32 mass%, a risk of occurrence of abnormal corrosion is small even when, in an atmosphere where ash containing alkali sulfates is present, the member is exposed to a high temperature equal to or higher than the eutectic point of the alkali sulfates. |
