Nonmagnetic alloy steel having improved machinability

C - Chemistry – Metallurgy – 22 – C

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C22C 38/38 (2006.01) C22C 30/00 (2006.01) C22C 38/04 (2006.01)

Patent

CA 1107988

IN THE UNITED STATES PATENT AND TRADEMARK OFFICE NONMAGNETIC ALLOT STEEL HAVING IMPROVED MACHINABILITY ABSTRACT OF THE DISCLOSURE A nonmagnetic alloy steel containing by weight 5 to 30% Mn and 0.005 to 0.5% N (nitrogen), satisfying the condition that ? (C % + N %) + 2(Mn % + Cu %) is more than 25% and containing at least one element to improve the machinability of the steel. Since the steel contains no Ni, the steel is inexpensive and can be used for bars for reinforcing concrete and bolts for civil engineering works and buildings.

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