STEEL SHEET FOR WARM PRESS FORMING, WARM PRESS FORMED PARTS AND METHOD FOR MANUFACTURING THEREOF

摘要

PURPOSE: a kind of steel warm deep drawing forming, temperature-pressure formed parts and its manufacturing method are provided to the heat treatment process for applying unimach and impingement members by ensuring the tensile strength of 800MPa or more, and improve ductility. ;CONSTITUTION: for warm deep drawing forming steel plate by 0.01-0.The C of 5 weight %, 3.The Mn 0. of 0 weight % or less Si (not including 0), 3-15 weight %0001-0.1 weight, the P of %, 0.0001-0.The S of 03 weight %, 3.0 weight or less Al (not including 0), 0.03 weight % N below, remaining is Fe and inevitable impurity. In addition, by steel plate 0.001-2.0 weight, the one or more of % is in Cr, Mo and W. In addition, by steel plate 0.001-0.4 weight, the one or more of % is in Ti, Nb, Zr and V. In addition, by steel plate 0.005-2.0 weight, the one or more of % is in Cu and Ni. ;The 2013 of copyright KIPO submissions;[Reference numerals] (AA) temperature; (BB) time