摘要 |
An abrasion resistant steel excellent in bending formability and suitable for members, e.g., power shovels, which come into contact with earth and sand, and a production method thereof are provided. Specifically, the steel contains, on a percent by mass basis, 0.05% to 0.35% of C, 0.05% to 1.0% of Si, 0.1% to 2.0% of Mn, 0.1% to 1.2% of Ti, 0.1% or less of Al, at least one element of 0.1% to 1.0% of Cu, 0.1%,to 2.0% of Ni, 0.1% to 1.0% of Cr, 0.05% to 1.0% of Mo, 0.05% to 1.0% of W, and 0.0003% to 0.0030% of B, if necessary at least one element of 0.005% to 1.0% of Nb and 0.005% to 1.0% of V, and the remainder including Fe and incidental impurities, where DI* represented by the following formula is less than 60. DI* = 33.85 x (0.1 x C*)0.5 x (0.7 x Si +1) x (3.33 x Mn + 1) x(0.35 x Cu + 1) x (0.36 x Ni + 1) x (2.16 x Cr + 1) x (3 x Mo* + 1) x (1.5 x W* + 1) (1) where C* = C - 1/4 x (Ti - 48/14N), Mo* = Mo x (1 - 0.5 x (Ti - 48/14N)), and W* = W x (1 - 0.5 x (Ti - 48/14N)). |