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Rockwell C70 hardness

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Journal Articles
Alloy Digest (1965) 14 (1): TS-158.
Published: 01 January 1965
... Vasco Hypercut is a super-hard high-speed steel that hardens to Rockwell C70 and is recommended for cutting tools for the toughest machining operations. This datasheet provides information on composition and hardness as well as fracture toughness. It also includes information on forming, heat...
Journal Articles
Alloy Digest (1970) 19 (4): TS-229.
Published: 01 April 1970
... with 1.15% carbon content. It is a modified version of AISI Type M44 high-speed steel producing superior toughness at a slight sacrifice of red-hardness. It has superior cutting performance and superior wear resistance. It has ex- cellent forgeability and can be hardened to about Rockwell C70...
Journal Articles
Alloy Digest (1969) 18 (11): SA-246.
Published: 01 November 1969
... Equivalents: AMS 6470 Nitralloy 135Mod. General Characteristics: Atlas Surf-Hard is an electric furnace vacuum degassed quality, nitriding steel capable of being nitrided to develop a hard wear and abrasion resisting surface with a tough and shock resisting core. Surface hardness of up to Rockwell C70...