DIN 1.6740 Cast steels
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DIN 1.6740 Chemical Composition
DIN 17205: 1992 / Quenched and tempered steel castings for general applications; technical delivery conditions
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DIN 1.6740 Heat Treatments
- Normalized at 880-920°C until the core reaches this temperature. Subsequently, they have to cool down in stationary atmosphere
Quenched at 880-920°C homogeneously and thoroughly to the quenching temperature
Tempered at 530-670°C
Surface hardened at 900-950°C by suitable gas burners or by eddy currents to this temperatures. Quenching is usually carried out in water. In order to reduce the risk of cracking, mildly acting quenchants can be used. If possible, immediately after surface hardening, a stress relief heat treatment shall be made at 140-180°C. The duration of stress relieving depends on the wall thickness. It should be at least 1 hour - Air Quenched and Tempered Hardening: 880-920°C; Tempering: 600-650°C Liquid Quenched and Tempered (I) Hardening: 880-920°C; Tempering: 600-650°C Liquid Quenched and Tempered (II) Hardening: 880-920°C; Tempering: 500-50°C
DIN 1.6740 Mechanical Properties
Temperature
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DIN 1.6740 International Equivalent Materials
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Equivalence categories reflect chemical-composition and mechanical-property comparison — always verify suitability against the governing specification for your application.
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- 3Cross References
- 16Composition
- 28Mechanical Properties
- -Physical Properties
- 2Heat Treatment
- -Metallography
- -Machinability
- -Stress-Strain
- -Formability
- 15Fatigue
- -Fracture
- -Creep
- -Joints
- -Coatings
- -Dimensions
- -Tribology
- -Corrosion
- -Ageing
- -Weatherability
- -Irradiation
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