HASTELLOY® aleación G

HASTELLOY-Alloy-G

Super Alloy HASTELLOY® G™ (UNS N06007) Product Introduction

HASTELLOY® G™ (UNS N06007) is a highly corrosion-resistant nickel-chromium-iron-molybdenum alloy designed for extreme environments where resistance to oxidizing and reducing acids is critical. This article provides a comprehensive introduction to HASTELLOY® G™ alloy, detailing its chemical composition, mechanical properties, performance across different temperatures, industry applications, available shapes and sizes, production standards, welding and processing capabilities, as well as advantages, disadvantages, and comparisons with similar products.

Composición química

ElementoComposición (%)
Níquel (Ni)66.0 min
Cromo (Cr)21.0 – 23.5
Hierro (Fe)5.0 – 7.0
Molibdeno (Mo)6,0 – 8,0
Cobre1.0 – 2.5
Manganeso (Mn)1,0 máx.
Silicio (Si)0.70 max
Carbono (C)0.05 – 0.15
Azufre (S)0.015 máx.
Fósforo (P)0.015 máx.

Propiedades mecánicas

PropiedadValor
Resistencia a la tracción, ksi (MPa)110 (760) minutos
Límite elástico (0,2 % de compensación), ksi (MPa)52 (360) min
Alargamiento (% en 2 pulgadas)40 minutos
Dureza, Rockwell C (HRC)25 – 35

Rendimiento a diferentes temperaturas

HASTELLOY® G™ alloy exhibits excellent performance across varying temperature ranges:

  • Temperatura ambiente: Exceptional resistance to oxidizing and reducing acids such as sulfuric acid, nitric acid, and hydrochloric acid.
  • Elevated Temperatures: Maintains high strength and corrosion resistance up to 1800°F (980°C), making it suitable for high-temperature chemical processing.
  • Temperaturas bajas: Retains ductility and toughness at cryogenic temperatures, ensuring reliability in extreme environments.

Aplicaciones industriales

HASTELLOY® G™ alloy finds applications across various industries due to its superior corrosion resistance:

Sector industrialAplicaciones
Procesamiento químicoReactors, heat exchangers, and piping systems handling aggressive chemicals such as acids and chlorides.
Pulpo y papelEquipment for bleach plants, digesters, and evaporators exposed to corrosive media.
Petróleo y gasComponents in refineries and petrochemical plants exposed to sour gas environments containing hydrogen sulfide.
FarmacéuticoPharmaceutical processing equipment requiring resistance to harsh chemicals.

Formas, tamaños y estándares de producción.

Formulario de productoFormas disponiblesTamaños disponiblesEstándares de producción
Hojas/PlacasPlatos, HojasEspesor: 0,025″ – 1,000″ (0,64 mm – 25,4 mm)ASTM B582
BarrasBarras redondas, barras hexagonales.Diámetro: 0,25″ – 6,0″ (6,35 mm – 152,4 mm)ASTM B582
Tubos/TuberíasTubos sin costura, tubos soldadosDiámetro exterior: 0,5″ – 6,0″ (12,7 mm – 152,4 mm)ASTM B619, ASTM B622

Estándares y grados correspondientes

País/RegiónEstándar/Grado
EE.UUUNS N06007
Europa2.4618
AlemaniaNiCr23Mo16Cu
FranciaNC23FeDU

Soldadura, Procesamiento, Pulido, Tratamiento Térmico

ProcesoDetalles
SoldaduraExcelente soldabilidad mediante métodos TIG, MIG, asegurando uniones fuertes y confiables en ambientes corrosivos.
ProcesandoMecanizable mediante métodos convencionales, ofreciendo flexibilidad en los procesos de fabricación.
PulidoCapaz de lograr acabados suaves para mejorar la resistencia a la corrosión y el atractivo estético.
Tratamiento térmicoAnnealing at 2050°F (1121°C) followed by rapid quenching optimizes material properties and performance.

Procesamiento en frío, ventajas y desventajas

AspectoDetalles
Procesamiento en fríoConserva ductilidad y formabilidad a temperatura ambiente, facilitando la conformación y la fabricación.
VentajasExceptional resistance to a wide range of aggressive chemicals, high mechanical strength, and reliability in extreme environments.
DesventajasHigher initial cost compared to conventional stainless steels, limited availability of specific shapes and sizes.

productos similares

nombre del productoComparación
HASTELLOY C-276 (UNS N10276)Higher molybdenum content and broader resistance to oxidizing and reducing environments compared to G™ alloy.
HASTELLOY C-22 (UNS N06022)Higher chromium content and resistance to oxidizing and reducing acids, including wet chlorine and ferric and cupric chlorides.

Comparación de productos similares

Propiedad/CaracterísticaHastelloy G™Hastelloy C-276Hastelloy C-22
Contenido de níquel (%)66.057.056.0
Contenido de molibdeno (%)6,0 – 8,015.0 – 17.012,5 – 14,5
Contenido de cromo (%)21.0 – 23.514.5 – 16.520,0 – 22,5
Resistencia a la tracción (ksi)110 minutos110 minutos115 minutos
Límite elástico (ksi)52 min52 min55 minutos
Resistencia a la corrosiónExcellent in oxidizing and reducing acids, including sulfuric, nitric, and hydrochloric acid.Excellent in a wide range of corrosive environments, including strong oxidizers and reducing agents.Excellent in oxidizing and reducing acids, including wet chlorine and ferric and cupric chlorides.

This comprehensive article provides a detailed introduction to HASTELLOY® G™ alloy (UNS N06007), encompassing its chemical composition, mechanical properties, performance in various environments, industry applications, available forms and sizes, production standards, welding and processing capabilities, as well as advantages, disadvantages, and comparisons with similar alloys. The structured format using tables ensures clarity and accessibility of technical information, catering to engineers, manufacturers, and professionals seeking corrosion-resistant materials for demanding applications.