| 摘要 |
Disclosed is a steel coated with a zinc based alloy which has a superior resistance to liquid metal embrittlement and cracking, has excellent workability, and which has a zinc based alloy coating layer formed on the surface of a steel member. The steel member comprises by mass 0.010 - 0.100% C, no more than 1.50% Si, no more than 2.00% Mn, no more than 0.100% P, no more than 0.030% S, no more than 0.0050% N, no more than 0.050% Ti, 0.0003-0.0100% B, with the remaining portion comprising Fe and unavoidable impurities; has a chemical composition with an L-value of at least 5.50, where L-value = {(Ti / 48) + (B / 11)} / (N / 14); and has a metal structure with 10 - 99% by volume of ferrite, with the remainder being bainite, pearlite, cementite, or martensite. |
