STAINLESS STEEL CLAD STEEL PLATE HAVING EXCEPTIONAL CORROSION RESISTANCE TO SEAWATER

摘要

The invention provides a stainless cladding steel plate having excellent sea water corrosion resistance that satisfies both corrosion resistance and mechanical properties. The stainless cladding steel plate with excellent sea water corrosion resistance includes a cladding metal including, in mass%, C: not more than 0.030%, Si: 0.02 to 1.50%, Mn: 0.02 to 2.0%, P: not more than 0.040%, S: not more than 0.030%, Ni: 22.0 to 25.0%, Cr: 22.0 to 26.0%, Mo: 3.5 to 5.0% and N: 0.10 to 0.25%, the balance being Fe and inevitable impurities, the cladding metal satisfying the relation (1) below, the cladding metal being such that the amounts of chromium and molybdenum present as precipitates in the steel are not more than 0.3 mass% and not more than 0.2 mass%, respectively, Cr + 3.3Mo + 16N 40 (1) wherein the chemical symbols indicate the amounts in mass% of the respective elements.