| 摘要 |
An austenitic stainless steel sheet which is provided with a coating film on at least a part of the surface thereof, and which has a chemical composition containing, in mass%, from 0.01% to 0.10% (inclusive) of C, from 0.2% to 2.0% (inclusive) of Si, 1.5% or less of Mn, 1.0% or less of Mo, from 15.0% to 22.0% (inclusive) of Cr, from 4.5% to 10.0% (inclusive) of Ni, 1.0% or less of Cu, 0.30% or less of Nb and from 0.01% to 0.15% (inclusive) of N, with the balance made up of Fe and unavoidable impurities. The coating film is provided with an Si-increased layer in a region from the surface to the depth of 10 nm, said Si-increased layer having a maximum Si amount of 10.0% or more and a maximum Fe amount of 8.5% or less. The Si-increased layer has a thickness of 5 nm or more. This austenitic stainless steel sheet is not susceptible to diffusion bonding even at high temperatures. |
