ASTM A 387 Grade 21L Class 1 Structural and constructional steels
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This material has 74 properties — only a subset is shown here.
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ASTM A 387 Grade 21L Class 1 Chemical Composition
A387/A387M: 2025 / Standard Specification for Pressure Vessel Plates, Alloy Steel, Chromium-Molybdenum
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ASTM A 387 Grade 21L Class 1 Physical Properties
Temperature
This material has 74 properties — only a subset is shown here.
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ASTM A 387 Grade 21L Class 1 Heat Treatments
- All plates shall be thermally treated either by annealing, normalizing and tempering, or, when permitted by the purchaser, accelerated cooling from the austenitizing temperature by air blasting or liquid quenching, followed by tempering.
The minimum tempering temperature shall be 675°C.
ASTM A 387 Grade 21L Class 1 Mechanical Properties
Temperature
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ASTM A 387 Grade 21L Class 1 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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- 9Cross References
- 7Composition
- 4Mechanical Properties
- 3Physical Properties
- 1Heat Treatment
- -Metallography
- -Machinability
- -Stress-Strain
- -Formability
- -Fatigue
- -Fracture
- -Creep
- -Joints
- -Coatings
- 47Dimensions
- -Tribology
- -Corrosion
- -Ageing
- -Weatherability
- -Irradiation
- 3Total Suppliers