Surface-treated steel sheet for fuel containers having excellent corrosion resistance, formability and weldability

  • US 6,143,430 A
  • Filed: 07/29/1999
  • Issued: 11/07/2000
  • Est. Priority Date: 07/30/1998
  • Status: Expired due to Term
First Claim
Patent Images

1. A surface treated steel sheet for fuel containers having excellent corrosion resistance, formability and weldability comprising a base metal of a steel sheet containing, in wt %, 0.0005-0.0040% of C, 0.0005-0.0040% of N, 0.005-0.020% of P and 0.0005-0.0030% of B, a first coating layer formed on at least one surface of the steel sheet as a Zn coating layer of a coating weight of 5-80g/m2, and a second coating layer formed on the first coating layer as a Ni coating layer of a coating weight of 0.5-10g/m2.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×