ASTM A 193 B8 Class 1 Stainless steels
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ASTM A 193 B8 Class 1 Chemical Composition
A193/A193M: 2026 / Standard Specification for Alloy-Steel and Stainless Steel Bolting for High Temperature or High Pressure Service and Other Special Purpose Applications
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ASTM A 193 B8 Class 1 Physical Properties
Temperature
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ASTM A 193 B8 Class 1 Heat Treatments
- All austenitic stainless steels shall receive a carbide solution treatment.
Class 1: After rolling of the bar, forging, or heading, whether done hot or cold, the material shall be heated from ambient temperature and held a sufficient time at a temperature at which the chromium carbide will go into solution and then shall be cooled at a rate sufficient to prevent the precipitation of the carbide.
For bolting of Class 1 Grade B8 to be used in service at temperatures exceeding 538°C (1000°F), the following shall apply: The minimum Carbon content shall be 0.04%. Carbide solution treatment shall be between 1038°C and 1065°C (1900°F and 1950°F) followed by quenching in water or rapid cooling by other means.
ASTM A 193 B8 Class 1 Mechanical Properties
Temperature
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ASTM A 193 B8 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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- 558Cross References
- 7Composition
- 6Mechanical Properties
- 3Physical Properties
- 1Heat Treatment
- -Metallography
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- -Formability
- -Fatigue
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- 31Creep
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- 1236Corrosion
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