耐腐蚀钢、棒材、线材、锻件、环件和挤压件15Cr-4.5Ni-0.30Cb（Nb）-3.5Cu自耗电极重熔固溶热处理、沉淀硬化

This specification covers a corrosion resistant steel in the form of bars, wire, forgings, flash welded rings, and extrusions in the solution heat treated condition (see 8.3 ), 12 inches (305 mm) and under in nominal diameter, thickness or for hexagons, least distance between parallel sides, and having a maximum cross-sectional area of 144 in 2x (930 cm 2x), and stock of any size for forging, flash welded rings, or extruding.Cross Reference: AMS2241,AMS2248,AMS2300,AMS2315,AMS2371,AMS2374,AMS2750,AMS2806,AMS2808,AMS5659/H1025,AMS7490,AMSH6875,ARP1110,ASTMA370,ASTMA604,ASTME353