Low carbon resulfurized free cutting steel

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United States of America Patent

PATENT NO 8691141
SERIAL NO

12998897

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Abstract

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A low carbon resulfurized free cutting steel consisting of 0.04 to 0.15% of C, more than 0.10% and 0.70% or less of Si, 0.85 to 1.50% of Mn, 0.040 to 0.120% of P, 0.250% or more and less than 0.400% of S, less than 0.005% of Al, more than 0.0020% and 0.0120% or less of O, and more than 0.0070% and 0.0150% or less of N, all by mass percentage, and the balance of Fe and inevitable impurities, and satisfying a formula (1) and a formula (2), as follows:

description='In-line Formulae' end='lead'0.15%≦Si %+2×P %−(5×Al %+10×O %+3×N %)≦0.75%  (1), anddescription='In-line Formulae' end='tail'

description='In-line Formulae' end='lead'([Mn %]5)/155)/2  (2).description='In-line Formulae' end='tail'

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Patent Owner(s)

Patent OwnerAddress
JFE BARS & SHAPES CORPORATIONTOKYO 105-0004

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Murakami, Toshiyuki Miyagi, JP 50 609
Shiraga, Tetsuo Miyagi, JP 3 14
Tomita, Kunikazu Miyagi, JP 27 178

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