Hastelloy C22 and C276 are both nickel-based alloys with excellent corrosion resistance. C22 contains more chromium, giving it better resistance to oxidizing chemicals and mixed acids.
C276 contains more molybdenum, making it especially effective in reducing acids, such as hydrochloric and sulfuric acid. Both alloys also resist pitting, crevice corrosion, and stress corrosion cracking.
A highly corrosion-resistant nickel-chromium-molybdenum-tungsten alloy used in chemical processing, pharmaceutical equipment, waste treatment and environments containing both oxidizing and reducing media.
View hastelloy c22A versatile nickel-chromium-molybdenum alloy widely used in aggressive chemical processing, pollution control, acid equipment and mixed corrosive environments.
View hastelloy c276Revisa las diferencias clave antes de confirmar los medios químicos, la forma del producto, la norma, el certificado y el calendario de entregas.
| Elemento de comparación | Hastelloy C276 | Hastelloy C22 | Nota sobre la selección |
|---|---|---|---|
| Información básica | |||
| Número UNS | N10276 | N06022 | Useful for drawings, MTC review and purchase specifications. |
| Tipo de aleación | Aleación de níquel-cromo-molibdeno-tungsteno | Aleación de níquel-cromo-molibdeno-tungsteno | Both are corrosion-resistant nickel alloys for severe industrial service. |
| Formas típicas de los productos | Plate, sheet, pipe, tube, round bar, fittings, flanges | Plate, sheet, pipe, tube, round bar, wire, fittings | Availability depends on size, quantity, standard and delivery schedule. |
| Composición química | |||
| Níquel (Ni) | Saldo | Saldo | Nickel base supports corrosion resistance and ductility. |
| Cromo (Cr) | Aprox. 16% | Aprox. 22% | C22 has higher chromium, helping oxidizing media resistance. |
| Molibdeno (Mo) | Aprox. 16% | Aprox. 13% | C276 has higher molybdenum, useful in many reducing environments. |
| Tungsteno (W) | Approx. 4% | Approx. 3% | Tungsten contributes to localized corrosion resistance. |
| Carbono (C) | 0,01 como máximo | 0,01 como máximo | Low carbon supports weld heat-affected zone corrosion resistance. |
| Propiedades mecánicas | |||
| Límite elástico, RT | Approx. 365 MPa | Approx. 372 MPa | Typical annealed plate data; final values follow MTC and ordered standard. |
| Resistencia a la tracción, a temperatura ambiente | Aprox. 785 MPa | Approx. 786 MPa | Both grades are close in common annealed plate conditions. |
| Alargamiento, RT | Approx. 59% | Approx. 62% | Both offer good ductility for fabrication and forming. |
| Soldabilidad | Excellent with qualified procedure | Excellent with qualified procedure | Filler metal, heat input and corrosion test requirements should be confirmed. |
| Comparación de precios | |||
| Coste relativo de los materiales | Alto | De alto a más alto | C22 can be higher in some sizes because of grade demand, availability and production schedule. |
| Disponibilidad de existencias | Often stronger availability in common plate, pipe, bar and fitting sizes | Available in standard forms, but some sizes may need special production | C276 may be easier for urgent or small-batch procurement in common specifications. |
| Factores que influyen en la cotización | Forma, tamaño, cantidad, norma, MTC, ensayos y mercado actual del níquel y el molibdeno | Forma, tamaño, cantidad, norma, MTC, ensayos y mercado actual del níquel y el molibdeno | Final price should be quoted by actual drawing, tolerance, certificate and delivery requirement. |
| Rendimiento y aplicaciones | |||
| Resistencia a la corrosión | Broad resistance in severe mixed chemical environments | Excellent resistance in many oxidizing and chloride media | C276 is often broader; C22 is often preferred for oxidizing chloride risk. |
| Aplicaciones típicas | Acid equipment, FGD systems, chemical processing, pollution control | Wet chlorine, mixed acids, reactors, chloride-bearing chemical equipment | Select by actual medium, concentration, temperature and cleaning process. |
| Mejor caso de uso | General severe corrosion service with wide product availability | Oxidizing chloride or wet chlorine service where pitting resistance is critical | Use corrosion data and project specification for final engineering selection. |
Los valores son referencias típicas para la comparación de artículos. El suministro final debe ajustarse a la norma solicitada, la forma del producto, el tratamiento térmico, el certificado de ensayo de fábrica y los requisitos del proyecto.
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