PROPRIETARY BÖHLER K720 Tool steels
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PROPRIETARY BÖHLER K720 Chemical Composition
Böhler Edelstahl, Product Data Sheets,
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PROPRIETARY BÖHLER K720 Physical Properties
Temperature
This material has 164 properties — only a subset is shown here.
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PROPRIETARY BÖHLER K720 Heat Treatments
- Annealing: 680-720°C (1256-1328°F); Slow controlled cooling in furnace at a rate of 10 to 20°C/hr (18 to 36°F/hr) down to 600°C (1112°F), further cooling in air.
Stress relieving: 650°C (1202°F); Slow cooling in furnace Intended to relieve stresses set up by extensive machining, or in complex shapes. After through heating, hold in neutral atmosphere for 1-2 hours.
Hardening and tempering: 790-820°C (1454-1508°F). Oil, salt bath 200-250°C (392-482°F) up to 20 mm thickness. Holding time after temperature equalization: 15 to 30 minutes. After hardening, tempering to the desired working hardness, see tempering chart.
PROPRIETARY BÖHLER K720 Mechanical Properties
Temperature
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PROPRIETARY BÖHLER K720 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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- 75Cross References
- 5Composition
- 5Mechanical Properties
- 14Physical Properties
- 4Heat Treatment
- -Metallography
- -Machinability
- -Stress-Strain
- -Formability
- -Fatigue
- -Fracture
- -Creep
- -Joints
- -Coatings
- -Dimensions
- -Tribology
- -Corrosion
- -Ageing
- -Weatherability
- -Irradiation
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