Fuel tank made of ferritic stainless steel

A fuel tank characterized by being made of a ferritic stainless steel sheet:

• comprising, in mass,
• 10 to 25% of Cr,
• 0.015% or less of C,
• 0.015% or less of N, and
• one or more of Ti and Nb in a manner to satisfy the expression (Ti+Nb)/(C+N)≧8, with the balance consisting of Fe and unavoidable impurities;
• and having an average r-value of 1.9 or larger, an r-value in-plane anisotropy Δr of 1.0 or smaller, and a total elongation of 30% or larger,
• said fuel tank being fabricated from the ferritic stainless steel sheet having on surfaces thereof a lubricant film providing a surface friction coefficient of 0.10 or less.

A ferritic stainless steel sheet for a fuel tank characterized by comprising, in mass,

• 10 to 25% of Cr,
• 0.015% or less of C,
• 0.015% or less of N, and
• one or more of Ti and Nb in a manner to satisfy the expression (Ti+Nb)/(C+N)≧8, with the balance consisting of Fe and unavoidable impurities;
• and having an average r-value of 1.9 or larger, an r-value in-plane anisotropy Δr of 1.0 or smaller, and a total elongation of 30% or larger,
• said ferritic stainless steel sheet having on surfaces thereof a lubricant film providing a surface friction coefficient of 0.10 or less.