Steel sheet having excellent resistance to liquid metal embrittlement cracks and method for manufacturing the same

A method of manufacturing a steel sheet having excellent resistance to liquid metal embrittlement cracks, the method comprising:

• reheating a steel slab comprising:
• 0.04% to 0.35% of C, 0.99% or less of Al+Si, 3.5% to 10% of Mn, 1.5% or less of Cr (excluding 0%), 0.05% or less of P (excluding 0%), 0.02% or less of S (excluding 0%), and 0.02% or less of N (excluding 0%) with a remainder of Fe and other inevitable impurities, by weight %, at a temperature of 1100° C. to 1300° C.;
• finish-hot-rolling the reheated steel slab at a temperature of Ar3 to 1000° C. to obtain a hot-rolled steel sheet;
• coiling the hot-rolled steel sheet at a temperature of 720° C. or less;
• heat-treating the coiled hot-rolled steel sheet at a temperature in a range of Ac1 to Ac1+(Ac3−Ac1)/2 for at least 30 minutes;
• pickling the heat-treated hot-rolled steel sheet for at least 5 seconds;
• cold-rolling the pickled hot-rolled steel sheet to obtain a cold-rolled steel sheet;
• and
• two-phase annealing the cold-rolled steel sheet a temperature in the range of 580° C. to 900° C. for 10 seconds to 5 minutes.