Kabushiki Kaisha Kobe Seiko Sho

Kobe Steel, Ltd.

Masao Toyama

Kazutoshi Shimogori

Hiroshi Satoh

Koki Ikeda

Hirohiko Sakai

Hidetoshi Nishimoto

Shingo Nomura

Junji Kawahuku

Shoji Miyake

Takuya Kochi

Takenori Nakayama

Shogo Murakami

Masataka Shimotsusa

Shoji Miyazaki

Fujio Koizumi

Sinichi Ohnishi

Takahiko Nagamatsu

Hidetoshi Shimoto

Junji Kawafuku

Ken Ishida

A hot-rolled wire rod excelling in wire drawability is provided, in which breakage can be suppressed even in heavy work from a large diameter. A hot-rolled wire rod contains C: 0.35 to 0.65% (percent by mass, hereinafter expressed as well), Si: 1.4 to 3.0%, Mn: 0.10 to 1.0%, Cr: 0.1 to 2.0%, P: 0.025% or less (exclusive of 0%), S: 0.025% or less (exclusive of 0%), N: 0.006% or less (exclusive of 0%), Al: 0.1% or less (exclusive of 0%), and O: 0.0030% or less (exclusive of 0%), with the remnant consisting of Fe and inevitable impurities; wherein the content of hydrogen in steel is 2.50 ppm (ppm by mass, hereinafter expressed as well) or less, and hardness (HV) is 460&#xd7;Cor less (Cindicates the content of C (percent by mass) in a position of depth of D/4 (D: diameter of the wire rod)).

Wire with excellent suitability for drawing and process for producing the same

Disclosed is a high-strength spring steel containing C, Si, Mn, Ni, Cr, Mo, V and the like within the specified range, wherein the above components satisfy the following equation:

High-strength spring steel

Zn-Mg alloy is plated by vapor deposition on the surface of metals. Since Zn and Mg are vapor-deposited as a vapor mixture of an optional ratio on the surface of metals, plated layers of excellent corrosion resistance, peeling resistance of coating film, formability, etc. can be formed. There is disclosed a method of forming uniform vapor mixtures of Zn and Mg, and vapor-depositing them on the surface of metals as the method forming the vapor-deposited layers.

Zn-Mg alloy vapor deposition plated metals of high corrosion resistance,

Provided herein is an Al-Cr alloy vapor deposited product having high corrosion resistance which can be used under a corrosive environment for a long period of time on account of the outstanding corrosion resistance and heat resistance of the Al-Cr alloy vapor deposited layer.

Al-Cr alloy vapor-deposited material

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Mino, Japan

Masao Toyama