Descripción
Hastelloy C22 / Alloy C22 Flanges – ASTM B564 UNS N06022
Forged Alloy C22 flange solutions for demanding mixed, oxidizing and reducing chemical environments after project-specific corrosion review.
Quick engineering answer
Hastelloy C22 and Alloy C22 refer to UNS N06022, a nickel-chromium-molybdenum alloy with tungsten. ASTM B564 is the forged-product specification used for applicable C22 flanges; UNS N06022 is the correct UNS designation.
Product specification
| Material | ASTM B564 UNS N06022 nickel-chromium-molybdenum alloy |
|---|---|
| Available forms | cuello de soldadura, ciego, deslizarse, soldadura de encaje, roscado, junta de regazo, orifice and drawing-specific flanges where permitted |
| Dimensional standards | ASME B16.5; ASME B16.47 for applicable large diameters; EN 1092-1 or approved drawings on request |
| Clases de presión | Clase 150, 300, 400, 600, 900, 1500 y 2500 within the selected standard, material group and size limits |
| Frente a | cara levantada (RF), Junta tipo anillo (RTJ), Cara plana (FF) where permitted, or drawing-specific facing |
| Documentación | EN 10204 3.1 MTC, trazabilidad del número de calor, dimensional report and ordered inspection records |
Pressure-temperature ratings depend on the governing code, flange standard edition, grupo de materiales, tamaño y clase. Confirm the complete project specification before ordering.
Grade and terminology check
| Correct UNS designation | N06022 | Use on purchase orders and MTCs |
|---|---|---|
| Forged product standard | ASTM B564 | Dimensional requirements are specified separately |
| Material comparison | C22 and C276 are distinct grades | No automatic substitution |
Selección de materiales
Alloy C22 offers broad corrosion resistance in many severe chemical-process environments, but no alloy is universally immune. Temperatura, concentración, contaminantes, grietas, fabrication and actual process conditions must be reviewed using relevant corrosion data.
Matching-material note: C22 and C276 are different alloys and should not be interchanged by name. Match adjoining products to their correct product-form standard and obtain written engineering approval for any proposed substitution.
Quality controls available
- PMI and controlled material segregation
- Heat number and EN 10204 3.1 trazabilidad
- Corrosion testing, UT or PT when ordered
- Dimensional, facing and marking inspection
Aplicaciones típicas
Applications are selection cues, not blanket approvals. Medios de proceso, presión, temperatura, corrosion data, fatigue, fabrication and code requirements govern final suitability.
Standards hierarchy
Información requerida para la cotización
Provide the material grade, tipo de brida, estándar y edición, NPS o DN, pressure class or PN rating, tabla de tuberías o diámetro exacto, facing and finish, cantidad, destino de entrega, tratamiento térmico, ECM, pruebas, certification and third-party inspection requirements.
Preguntas frecuentes
What is the correct UNS number for Hastelloy C22?
The correct designation is UNS N06022. Purchase documents should also state ASTM B564 for forged flanges.
Are Alloy C22 and Hastelloy C22 the same?
Alloy C22 is the generic grade name and Hastelloy C22 is a recognized trade name associated with UNS N06022. The UNS number and product standard provide the clearest procurement identity.
Can C22 replace C276?
Not without engineering review. They have different chemistry and may behave differently in the actual service environment, fabrication route and project design.
Request a specification review and quotation
Send the complete RFQ or piping material specification. SASA FLANGE will review grade identity, dimensiones, frente a, inspection and documentation before production.
Related products and engineering resources
Centro de materiales de aleación de níquel Bridas Hastelloy C276 All Flanges
