Fuji Oil Company Limited

Fuji Standard Research, Inc.

Daido Tokushuko Kabushiki Kaisha

Daido Steel Co., Ltd.

Across Co., Ltd.

Jiro Ichikawa

Takao Nakagawa

Mihoko Yamashita

Hiroyuki Uchino

Toshihiro Kitagawa

A precipitation hardening steel excellent in machinability, toughness (10J/cm.sup.2 or above), hardness (HRC43 or above) after aging treatment and suitable to a metallic mold for plastics, which consists by weight percentage of C: 0.05-0.18%, Si:0.15-1.00%, Mn:1.0-2.0%, Ni:2.5-3.5%, Cr:0.7-2.0%, Al:0.5-1.5%, Cu:0.7-1.7%, Mo:0.1-0.4%, S:0.05-0.35%, and the balannce of Fe, and H-value obtained through the following equation indicates zero or a positive value:

High-hardness precipitation hardening steel for metallic mold

A flexible composite material comprising a core composed of a blend of a thermoplastic resin fiber and a reinforcing fiber, and a flexible sleeve formed of a thermoplastic resin and surrounding the core is prepared by intermixing a thermoplastic resin fiber and a reinforcing fiber to obtain a core, and then extruding a thermoplastic resin over the core.

Process for preparing a flexible composite material

A flexible composite material comprising a core composed of a blend of a thermoplastic resin fiber and a reinforcing fiber, and a flexible sleeve formed of a thermoplastic resin and surrounding the core. The composite material may be prepared by intermixing a thermoplastic resin fiber and a reinforcing fiber to obtain a core, and then extruding a thermoplastic resin over the core.

Flexible composite material and process for preparing same

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Chita, Japan

Jiro Ichikawa