| 摘要 |
Provided are a high-strength steel sheet for cans which has excellent flangeability and a process for producing the steel sheet. The steel sheet contains, in terms of mass%, 0.001-0.040%, excluding 0.040%, C, 0.003-0.100% Si, 0.10-0.60% Mn, 0.001-0.100% P, 0.001-0.020% S, 0.005-0.100% Al, and 0.0130-0.0170%, excluding 0.0130%, N, with the remainder comprising Fe and incidental impurities. The steel sheet has a value of (N total)-(N as AlN) (wherein "N total" is the total content of N and "N as AlN" is the content of N present as AlN) of 0.0100-0.0160% and an average plastic strain ratio, i.e., average r value, of higher than 1.0. The high-strength steel sheet is obtained by conducting hot rolling, winding the sheet at a temperature below 630ºC, cold-rolling the sheet at a rolling reduction of 91.5% or more, and subjecting the sheet to annealing and then secondary cold rolling at a rolling reduction of 20% or less. |
