ASTM A 266 Grade 3 Structural and constructional steels
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ASTM A 266 Grade 3 Chemical Composition
A266/A266M: 2024 / Standard Specification for Carbon Steel Forgings for Pressure Vessel Components
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ASTM A 266 Grade 3 Physical Properties
Temperature
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ASTM A 266 Grade 3 Heat Treatments
- Annealed, normalized, or normalized and tempered, but alternatively may be liquid quenched and tempered when mutually agreed upon between the manufacturer and the purchaser. When tempering is performed, it shall be at a subcritical temperature, but no less than 595°C (1100°F).
A multiple stage austenitizing procedure may be used whereby the forging is first fully austenitized and liquid quenched, followed by reheating within the intercritical temperature range to partially reaustenitize, and again liquid quenched. On completion of the austenitizing/quenching cycles, tempering at a temperature between 595°C (1100°F) and the lower critical temperature shall follow.
Although liquid quenching from the austenitizing temperatures is more effective in enhancing impact properties, air cooling from the austenitizing temperatures is also beneficial and may be used instead of the normalizing procedure.
ASTM A 266 Grade 3 Mechanical Properties
Temperature
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ASTM A 266 Grade 3 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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- 2Cross References
- 8Composition
- 12Mechanical Properties
- 3Physical Properties
- 1Heat Treatment
- -Metallography
- -Machinability
- -Stress-Strain
- -Formability
- -Fatigue
- -Fracture
- 16Creep
- 4Joints
- -Coatings
- -Dimensions
- -Tribology
- -Corrosion
- -Ageing
- -Weatherability
- -Irradiation
- -Total Suppliers