PROPRIETARY WM D-7 Tool steels
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PROPRIETARY WM D-7 Chemical Composition
Ellwood Specialty Steel, Product Data Sheets,
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PROPRIETARY WM D-7 Physical Properties
Temperature
This material has 13 properties — only a subset is shown here.
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PROPRIETARY WM D-7 Heat Treatments
- Hardening: Preheat at 1400-1500°F (760-816°C), then heat to 1950-2000°F (1066-1093°C) for maximum hardness and abrasion resisting qualities or to 1875-1925°F (1024-1052°C) for dies and tools which require a better balance of toughness and abrasion resistance. To hold size change to an absolute minimum, hold as close to 1900°F (1038°C) hardening temperature as possible. When pack hardened, hold the container at temperature for minimum time of one hour per inch of thickness to allow for proper carbide solution. With atmosphere furnace or salt bath hardening, soak at temperature for a minimum section should be soaked for an additional period of 15 minutes per inch. Quench the pieces in still air.
Tempering: When the pieces have cooled to room temperature, transfer to the tempering furnace. If the 1950-2000°F (1066-1093°C) hardening range was used, select a low temperature temper form 250°F (121°C) to 300°F (149°) so that maximum hardness and abrasion resistance will be maintained. If the 1875-1925°F (1024-1052°) range was used for hardening, temper in the 350-400°F (177-204°C) range for most applications or in the 950-975°F (510-524°C) secondary hardness range for semi-hot work applications. Double tempering of large section sizes is recommended.
PROPRIETARY WM D-7 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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- 1Cross References
- 6Composition
- -Mechanical Properties
- 3Physical Properties
- 1Heat Treatment
- -Metallography
- -Machinability
- -Stress-Strain
- -Formability
- -Fatigue
- -Fracture
- -Creep
- -Joints
- -Coatings
- -Dimensions
- -Tribology
- -Corrosion
- -Ageing
- -Weatherability
- -Irradiation
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