Heat-resistant alloy having high creep rupture strength under high-temperature low-stress conditions and excellent resistance to carburization.

摘要

A heat-resistant alloy having a high creep rupture strength under high-temperature low-stress conditions and excellent resistance to carburization even when used at a high temperature exceeding 1100 DEG C. The alloy comprises, in % by weight, 0.1% to 1.5% of C, 2% to 3% of Si, 0% to 2% of Mn, 20% to 30% of Cr, 25% to 40% of Ni, 0.6% to 2% of Al, and the balance Fe and inevitable impurities. Furthermore, the alloy may contain at least one component selected from the group consisting of 0.01 to 0.5% of Zr, up to 0.2% of N, 0.2 to 2.0% of Nb, 0.2 to 2.0% of W and 0.01 to 0.3% of Ti. <IMAGE>