The invention discloses
rare earth-containing heat-resistant
alloy steel. The
rare earth-containing heat-resistant
alloy steel comprises the following chemical elements in percentage by
mass: larger than 0 and smaller than or equal to 0.05% of C, larger than 0 and smaller than or equal to 1.0% of Si, larger than 0 and smaller than or equal to 1.0% of Mn, 13%-28% of Cr, 2%-8% of Al, larger than 0 and smaller than or equal to 0.50% of Nb, larger than 0 and smaller than or equal to 0.50% of Co, 0.5%-6% of Mo, 0.01%-0.2% of Y and 0.01%-0.1% of at least one of 57-71
rare earth elements in the
periodic table of chemical elements. In addition, the invention further discloses a slab
continuous casting production process of the rare earth-containing heat-resistant
alloy steel, and in the
continuous casting process, the specific
water flow of secondary cooling water is controlled to be 1.02 + / -0.10 L / kg. The rare earth-containing heat-resistant
alloy steel adopts reasonable chemical components and
process design, has excellent quality and performance, can tolerate the use temperature of 1,000-1,300 DEG C, has the elongation of 5%-25% at the use temperature of 1,000-1,300 DEG C, has the oxidation
weight loss of 0.2-8.0 g / (cm<2>.h) at the use temperature of 1,000-1,300 DEG C, and has the resistivity of 1.3-1.5 mu
omega.m at
room temperature.