Magnesium-free, fine-grained structural steel with improved mach

Details Magnesium-free, fine-grained structural steel with improved mach Magnesium-free, fine-grained structural steel with improved mach

1978-05-31

1980-07-01

Rutledge, L. Dewayne

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75123AA, 75123G, 75123R, 75126M, 75126L, 75128P, 75126G, C22C 3860

Patent

active

042104440

ABSTRACT:
The fine-grained structural steel of the invention, having improved machinability and good mechanical properties, contains, in addition to iron and carbon, the following elements in the following by weight proportions: Mn 0.3 to 2%; S 0.02 to 0.10%; Te 14 to 130 ppm; Ca 2 to 18 ppm; Al 0.01 to 0.05%; the weight Te/S ratio ranging from 0.07 to 0.13, preferably 0.09 to 0.11.

REFERENCES:
patent: 2236716 (1941-04-01), Morris
patent: 3634074 (1972-01-01), Ito et al.
patent: 3861906 (1975-01-01), Tipnis et al.
patent: 4004922 (1977-01-01), Thivellier et al.
patent: 4032333 (1977-06-01), Josefsson
patent: 4091147 (1978-05-01), Kanazawa et al.

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