Toyota Jidosha Kogyo Kabushiki Kaisha

Kunizou Imanishi

Tetsuya Suganuma

Kenji Ushitani

Kametaro Hashimoto

Seishu Mitani

Youichi Serino

Iron-base sintered alloy for the valve seats of internal combustion engines is an iron-base alloy powder containing, by weight, 6 - 20% chromium less than 2.0% nickel, and carbon 0.2 - 1.5%, together with at least one additive selected from among 0.3 - 1.5% manganese, 0.2 - 1.5% sulfur, 0.5 - 8% molybdenum, and 0.5 - 2.5% silicon, and molded to a sintered density of 6.2 - 6.8 g/cm.sup.3.

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Nagoya, Japan

Kunizou Imanishi