X80M DEEP SEA ANTI-STRAIN PIPELINE STEEL AND ROLLING PROCESS

摘要

X80M deep sea anti-strain pipeline steel, relating to the field of steel rolling, and having the following chemical components and mass percentage thereof: C: 0.030％-0.050％, Si: 0.10%-0.35％, Mn: 1.30％-1.60％, P≤0.010％, S≤0.0020％, Nb: 0.030％-0.070％, Ti: 0.006％-0.020％, Ni: 0.65％-0.85％, Cr≤0.02％, Mo: 0.31％-0.36％, Cu≤0.02％, V≤0.02％, Al: 0.015％-0.050％, and Ca: 0.0005％-0.030％, Ceq≤0.45, Pcm≤0.19, the remainder being Fe and impurities, satisfying service performance in deep sea seismic areas.