FREE-CUTTING STEEL

Japanese Patent JP3687370

B2

PROBLEM TO BE SOLVED: To provide an inexpensive nonleaded free-cutting steel having machinability equal to that of a free-cutting leaded resulfurized steel.
SOLUTION: This free-cutting steel has a composition which consists of, by weight, 0.05-0.30% C, ≤0.10% Si, 0.85-2.00% Mn, 0.020-0.20% P, >0.50-0.80% S, 0.0030-0.0200% N, 0.0050-0.0350% 0(oxygen), ≤0.30% Cu, ≤0.30% Ni, ≤1.5% Cr, ≤0.2% Mo, ≤0.10% Al, ≤0.50% Bi, ≤0.10% Te, ≤0.05% Ca, ≤1.00% Ti, ≤0.50% V, ≤0.0050% B, and the balance Fe with inevitable impurities and in which the value of Mn(%)/S(%) is regulated to ≥1.70.

JP2011042852	Fe-BASED FERROMAGNETIC SHAPE MEMORY ALLOY AND APPLICATION THEREOF
JP5267048	Manufacturing method of thick steel sheet with excellent weldability and ductility in the plate thickness direction

Mitsuo Uno
Yoshihiko Kamada

JP33351498A

August 24, 2005

November 25, 1998

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SUMITOMO METAL INDUSTRIES,LTD.

C22C38/00; C22C38/58; C22C38/60; (IPC1-7): C22C38/00; C22C38/60

JP50020917A
JP62033743A
JP54101709A

Mikiji Sugioka
Michio Mori
Terutada Hogami

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