66SiMnCrMo6-6-4 Steel

66SiMnCrMo6-6-4 Steel

Steel name: 66SiMnCrMo6-6-4
Diagram No.: 2036
DIN designation: 66SiMnCrMo6-6-4
Chemical composition in weight %: See the table.
Steel group: Bearing steels
Applications: No data
Comment: Ovako 677L & 677Q is an air-hardening bearing steel with high mechanical strength and fatigue properties. By using gas cooling or air-hardening it is possible to reduce the amount of distortion. Additionally the use of quenching medias such as oil and salt can be avoided, which improves both safety and environment. Similar designation: 66SiMnCrMo6-6-4. Ac1=768 C, Ac3=792 C, Ms=193.
Reference: Not shown in this demo version.

Heat Treatment
Hardening: 880-1000°C, directly hardened in air or by gas quenching.

Hardenability Diagram

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Other Steel Data links:
Carbides in Steel
CCT and TTT Diagrams of Steels
CCT and TTT Diagram Calculating Service
Hardenability Calculating Service
Macro Defects in Steel
Metal Etchants
Non-Metallic Inclusions in Steel
Semiconductor Etchants
Transformation Diagrams of Non-Ferrous Alloys
Tempering Diagrams of Steels

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