A kind of hot-dip low density steel and its manufacturing method

A kind of hot-dip low density steel and its manufacturing method

  • CN 105,908,089 B
  • Filed: 06/28/2016
  • Issued: 11/22/2019
  • Est. Priority Date: 06/28/2016
  • Status: Active Grant
First Claim
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1. a kind of hot-dip low density steel comprising the steel substrate positioned at core and the coating positioned at surface;

  • It is characterized by;

    There is boundary layer, the boundary layer includes iron particle layer, is had in the iron particle layer between the steel substrate and coatingDisperse the iron particle being covered on steel substrate, the partial size of the iron particle is 0.1-5 μ

    m, is covered with the first resistance in the iron particleBarrier;

    The hot-dip low density steel contains the Al element that mass percentage is 3.0~7.0%.

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