High strength and toughness pipeline steel roll in low-carbon and high-niobium-chromium system and preparation method thereof

High strength and toughness pipeline steel roll in low-carbon and high-niobium-chromium system and preparation method thereof

  • CN 101,519,752 A
  • Filed: 04/10/2009
  • Published: 09/02/2009
  • Est. Priority Date: 04/10/2009
  • Status: Active Application
First Claim
Patent Images

1. low-carbon high-niobium chromium series high strength high tenacity pipeline steel roll, it is characterized in that:

  • the Chemical Composition of this pipeline steel roll percentage ratio is by weight counted;

    C=0.01~

    0.06, Si=0.10~

    0.40, Mn=1.00~

    1.80, P≤

    0.018, S≤

    0.004, Ti=0.005~

    0.030, Nb=0.08~

    0.18, Cu≤

    0.30, Mo=0.08~

    0.20, Cr=0.10~

    0.35, Al=0.01~

    0.06, N=0.002~

    0.008, all the other inevitably are mingled with for Fe reaches.

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