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    • 4. 发明申请
    • Steel for production of high-strength components with excellent low-temperature toughness and uses of a steel of this type
    • 钢用于生产具有优异的低温韧性的高强度部件和这种钢的用途
    • US20070107808A1
    • 2007-05-17
    • US10551506
    • 2005-02-04
    • Agnes BaukRolf Sinz
    • Agnes BaukRolf Sinz
    • C22C38/44
    • C22C38/02C22C38/04C22C38/44
    • The invention provides a high-strength steel that has excellent ductile fracture values J integral even at low temperatures, so the risk of the component, which is produced in each case from the steel, breaking is reduced to a minimum even under unfavourable, hard operating conditions. This is achieved in that it contains (in % by weight) 0.08 to 0.25% C, 0.10 to 0.30% Si, 0.80 to 1.60% Mn,=0.020% P,=0.015% S, the sum of the P and S content being=0.030%, 0.40 to 0.80% Cr, 0.30 to 0.50% Mo, 0.70 to 1.20% Ni, 0.020 to 0.060% Al, 0.007 to 0.018% N,=0.15% V,=0.07% Nb, the sum of the V and Nb content being=0.020% and the remainder being iron and inevitable impurities. The steel according to the invention is particularly suitable for the manufacture of high-strength chains.
    • 本发明提供了即使在低温下也具有优异的延性断裂值J的高强度钢,因此,即使在不利的,难以操作的情况下,每种情况下从钢制成的部件的断裂的风险降低到最小 条件。 这是通过以下方式实现的:其中含有0.08-0.25%C,0.10-0.30%的Si,0.80到1.60%的Mn,= 0.020%的P,= 0.015%的S,P和S的总和是 = 0.030%,Cr:0.40〜0.80%,Mo:0.70〜1.20%,Al:0.020〜0.060%,N:0.007〜0.018%,Nb:0.15%,Nb: Nb含量= 0.020%,余量为铁和不可避免的杂质。 根据本发明的钢特别适用于制造高强度链。