Properties of a Newly Developed Galvannealed Steel Sheet with Modified Surface

Paper #:
  • 970718

Published:
  • 1997-02-24
Citation:
Sakurai, M., Hiraya, A., Inoue, S., Yamasaki, Y. et al., "Properties of a Newly Developed Galvannealed Steel Sheet with Modified Surface," SAE Technical Paper 970718, 1997, https://doi.org/10.4271/970718.
Pages:
10
Abstract:
A galvannealed steel sheet (GA) with a Ni-base inorganic lubricant film has been developed to meet the needs of the automotive industry, especially for improved press formability. This paper describes the results of tests performed to evaluate formability, spot weldability, phosphatability, paintability and corrosion resistance of the GA with the Ni-base lubricant film.The coefficient of friction as measured by flat sliding test decreases with increasing Ni content in the lubricant film. The spot weldability evaluated by electrode tip life test is slightly improved after the application of the lubricant film. Phosphatability, paintability and corrosion resistance of the GA with the lubricant film are equivalent to those of GA without the lubricant film.
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