Toyota Jidosha Kogyo Kabushiki Kaisha

Shozo Kanbara

Yasuhiko Komatsu

Wear and pitting resistant cast iron consisting essentially of 2.8 - 3.3% carbon, 1.5 - 2.1% silicon, 1.0 - 1.5% chromium, 0.6 - 0.8% molybdenum, 0.2 - 0.5% nickel, balance substantially all iron. The free cementite in the iron in its as-cast state amounts to 20 - 40% by volume and the casting is then held at 860.degree. - 950.degree. C for 1 - 10 hours, followed by quenching, for hardening purposes.

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Toyota, Japan

Shozo Kanbara