Ferrite-group stainless steel and its manufacture method

Ferrite-group stainless steel and its manufacture method

  • CN 107,002,200 A
  • Filed: 07/02/2015
  • Published: 08/01/2017
  • Est. Priority Date: 12/11/2014
  • Status: Active Application
First Claim
Patent Images

1. a kind of ferrite-group stainless steel, it is included contains C in terms of quality %:

  • 0.005~0.050%, Si:

    0.01~1.00%th, Mn:

    0.01~1.0%, P:

    Less than 0.040%, S:

    Less than 0.010%, Cr:

    15.5~18.0%, Ni:

    0.01~1.0%th, Al:

    0.001~0.10% and N:

    0.005~0.06% and surplus be Fe and inevitable impurity composition composition,Meet C concentration:

    2CCAbove, N concentration:

    2CNThe ferrite crystal grain of any one in above or both is with whole relative to organizingThe volume fraction of body is calculated as more than 5% and less than 50%,Vickers hardness is less than 180,Here, CCAnd CNContent (quality %) in respectively C and N steel.

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