Descripción
Chromium-molybdenum-vanadium high-temperature bolting
ASTM A193 Pernos prisioneros de alta temperatura B16
ASTM A193 Grade B16 fully threaded alloy-steel stud bolts for project-specified high-temperature pressure joints, supplied with matching heavy hex nuts and documentation as ordered.
respuesta rapida
ASTM A193 Grade B16 is a heat-treated chromium-molybdenum-vanadium alloy-steel bolting grade intended for high-temperature or high-pressure applications. It is selected by the governing design and material specification and should not be treated as a direct substitute for Grade B7.
Producto de un vistazo
Cuáles son ASTM A193 B16 stud bolts?
ASTM A193 B16 stud bolts are manufactured from chromium-molybdenum-vanadium alloy steel and heat treated to the ordered standard. The grade is used where the piping class, pressure-equipment specification or engineering design requires B16 bolting for elevated-temperature strength.
The material grade does not establish the finished stud dimensions or matching nut automatically. A complete order states the ASTM edition, diámetro, longitud, serie de hilos, nut grade, finish, cantidad, test requirements and applicable project documents.
ASTM A193 B16 stud bolt specifications
| Material | Chromium-molybdenum-vanadium alloy steel |
|---|---|
| Tratamiento térmico | Heat treated to ASTM A193/A193M Grade B16 requirements |
| Configuración | Fully threaded flange stud; double-end configuration by drawing |
| Trapos | UNC, 8Serie y clase especificadas por el proyecto o las Naciones Unidas para ASME B1.1 |
| Dimensiones | ASME B18.31.2, flange bolting schedule or approved drawing |
| nueces a juego | ASTM A194/A194M grade selected by the project; Calificación 7 is commonly considered where compatible |
| Opciones de acabado | Plano, black or approved high-temperature coating system |
| Documentación | MTC, tratamiento térmico, pruebas mecanicas, hardness and dimensions as ordered |
Dimensiones finales, tolerancias, tratamiento térmico, propiedades mecánicas, requisitos de impacto o dureza, coating and acceptance criteria follow the purchase order and the contractually specified standard edition.
¿Por qué especificar este grado??
Specify B16 when it appears in the approved piping material class, equipment datasheet or engineering calculation. Its Cr-Mo-V composition and heat treatment distinguish it from common B7 bolting and support demanding elevated-temperature applications.
Nota de ingeniería crítica
There is no single universal maximum service temperature for a B16 stud bolt product page. estrés permitido, creep behaviour, oxidación, nut material, revestimiento, preload retention and the governing code must all be reviewed at the actual design conditions.
Semental, opciones de tuerca y acabado
Aplicaciones típicas
Calidad, inspección y documentación
B16 supply can include heat-treatment records, mechanical-property verification, hardness results and full heat-number traceability. Inspection requirements should be stated before material processing begins.
- EN 10204 3.1 certificado de prueba de material cuando se solicita
- Heat-number and manufacturing-batch traceability
- Chemical composition and mechanical-property results
- Hardness testing at the frequency required by the ordered grade
- Charpy impact testing for low-temperature grades as specified
- Inspección dimensional y calibrado de roscas.
- Coating thickness or surface-condition inspection when applicable
- Inspección de terceros, marcado y embalaje de exportación por acuerdo
Información requerida para la cotización
- estándar astm, grade and contractually required edition
- Diámetro del perno, longitud total, Serie de hilo y clase de hilo.
- Quantity and whether two nuts per stud are required
- Especificación de tuerca correspondiente, calificación, style and finish
- Plano, coated or plated finish and the approved coating system
- Temperatura de diseño, impact-test temperature and sour-service requirements when relevant
- MTC, PMI, dureza, impacto, requisitos de recubrimiento e inspección de terceros
- Destino de entrega, método de embalaje y horario requerido
Preguntas frecuentes
What material is ASTM A193 B16?
B16 is a heat-treated chromium-molybdenum-vanadium alloy-steel bolting grade covered by ASTM A193/A193M.
Is B16 the same as B7?
No. They are different ASTM A193 grades with different chemistry and grade requirements. Substitution requires design and purchaser approval.
What nuts should be supplied with B16 studs?
The project must state the ASTM A194 nut grade. Calificación 7 is commonly considered for compatible applications, pero la temperatura, strength and code requirements control the final choice.
Can B16 stud bolts be coated?
Yes when the coating and application process are approved for the design temperature, tightening method and corrosion environment. High-temperature suitability must be documented.
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Reference standards
Material requirements are controlled by ASTM A193/A193M. Matching heavy hex nut requirements are specified separately under ASTM A194/A194M when applicable. La forma de la rosca y las dimensiones de los pernos pueden hacer referencia ASME B1.1 y ASME B18.31.2, subject to the purchase order. Always state the required edition instead of assuming the latest edition applies to an existing project.
Solicitar cotización técnica
Send your flange bolting schedule, bill of materials, dibujo o especificación del proyecto. SASA FLANGE revisará la calificación, nueces, trapos, dimensiones, finish, Requisitos de documentación y entrega antes de la cotización..
