Source blank for stainless steel three-ply clad sheet, production methods of clad steel plate and sheet for solid polymer type fuel cell separator, and solid polymer type fuel cell separator

Abstract From the Canadian patent

Provided is a first method for producing a source blank for a clad steel sheet composed of a stainless steel containing 0 to 0.3% B as a core component and a stainless steel containing 0.3 to 2.5% B as face components the face components each being combined with each of major faces of the core component through the following steps and the like: Step 1: disposing on , side end faces of each face component protectors with a length greater than a length of the side end faces, disposing tabs each in abutting relation with an extension of the protector's face to abut on the side end face of the face component, and performing bonding between the tabs and the protectors and between the face …