The invention relates to acid-resistant steel as well as a preparation method and application thereof. The acid-resistant steel comprises the following chemical components: C, Si, Mn, P, S, Al, Nb, V, Cr, Sb, Ni, N and Fe. Wherein the content of the C is 0.010%-0.025% by mass, the content of the Mn is 0.2%-0.4% by mass, the content of the Cr is 1.3%-2.0% by mass, the content of the Sb is 0.03%-0.07% by mass, and the content of the Ni is 0.05%-0.10% by mass; and the following relational expression is satisfied: [Ni]/[Sb] > = 1.0. According to the acid-resistant steel, the yield strength reaches 1000 MPa or above, the tensile strength reaches 1100 MPa or above, the ductility reaches 5% or above, meanwhile, compared with Q345, the sulfuric acid corrosion resistance is improved by 50% or above, and cracking is avoided when 90-degree d = 1a small-angle bending is achieved.

    本申请涉及一种耐酸钢及其制备方法与应用,所述耐酸钢的化学成分包括:C、Si、Mn、P、S、Al、Nb、V、Cr、Sb、Ni、N以及Fe;其中,以质量分数计,C的含量为0.010%~0.025%,Mn的含量为0.2%~0.4%,Cr的含量为1.3%~2.0%,Sb的含量为0.03%~0.07%,Ni的含量为0.05%~0.10%;且满足如下关系式:[Ni]/[Sb]≥1.0。该耐酸钢的屈服强度达到1000MPa以上,抗拉强度达到1100MPa以上,延伸率达到5%以上,同时较Q345耐硫酸腐蚀性能提升50%以上,并满足90°d=1a小角度折弯不开裂。


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    Title :

    Acid-resistant steel as well as preparation method and application thereof


    Additional title:

    一种耐酸钢及其制备方法与应用


    Contributors:
    HUI YAJUN (author) / CAI AYUN (author) / LIU KUN (author) / HAN YUN (author) / TIAN ZHIHONG (author) / WANG MINGZHE (author) / LIU LIWEI (author) / WANG CHANG (author)

    Publication date :

    2024-04-09


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    C22C Legierungen , ALLOYS / B21B Walzen von Metall , ROLLING OF METAL / B62D MOTOR VEHICLES , Motorfahrzeuge / C21D Veränderung der physikalischen Struktur von Eisenmetallen , MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS



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