OVERLAY STAINLESS CLAD STEEL HAVING SUPERIOR EXFOLIATION RESISTANCE

摘要

PURPOSE:To manufacture an overlay stainless clad steel having superior resistance to exfoliation due to hydrogen embrittlement by incorporating specified amounts of V and Ti and/or Nb into a base metal for an overlay stainless clad steel used in environment contg. hydrogen at high temp. and pressure. CONSTITUTION:0.10-0.35% V and 0.015-0.040% Ti and/or Nb are incorporated into JIS.SCMV5 Cr-Mo steel as a base metal for an overlay stainless clad steel for a pressure vessel used in environment contg. hydrogen at high temp. and pressure for petrochemistry, oil refining or coal liquefaction. SUS347 stainless steel is welded to the resulting base metal to manufacture an overlay stainless clad steel. This clad steel does not cause an exfoliation phenomenon due to hydrogen embrittlement in environment contg. hydrogen at high temp. and pressure.