STELLITE® aleación 6

STELLITE-Alloy-6

STELLITE® Alloy 6 Product Introduction

STELLITE® Alloy 6 is a cobalt-chromium-tungsten alloy renowned for its exceptional wear resistance, high temperature strength, and corrosion resistance. This article provides a detailed introduction to STELLITE® Alloy 6, covering its chemical composition, mechanical properties, performance at different temperatures, industry applications, shapes and sizes, production standards, welding and processing capabilities, advantages and disadvantages, and comparisons with similar alloys.

Composición química

STELLITE® Alloy 6 is primarily composed of cobalt, chromium, tungsten, and smaller amounts of nickel and iron for enhanced properties.

ElementoComposición (%)
Cobalto (Co)54.0 – 62.0
Cromo (Cr)27.0 – 32.0
Tungsteno (W)8.0 – 10.0
Carbono (C)1.15 – 1.85
Níquel (Ni)3.0 máx.
Hierro (Fe)3.0 máx.
Silicio (Si)1,0 máx.
Manganeso (Mn)1,0 máx.
Fósforo (P)0.03 máx.
Azufre (S)0.03 máx.

Propiedades mecánicas

STELLITE® Alloy 6 exhibits excellent mechanical properties suitable for high-wear applications:

PropiedadValor
Resistencia a la tracción, ksi (MPa)120 (830) min
Límite elástico (0,2 % de compensación), ksi (MPa)85 (590) min
Alargamiento (% en 2 pulgadas)20 minutos
Dureza, Rockwell C (HRC)48 – 55

Características de presentación

STELLITE® Alloy 6 offers outstanding performance in severe conditions:

  • Resistencia al desgaste: Exceptional resistance to abrasion, erosion, and metal-to-metal wear, making it ideal for high-stress wear environments.
  • Resistencia a la corrosión: Good resistance to oxidation and corrosion in high-temperature environments, including acids and alkalis.
  • Resistencia a altas temperaturas: Maintains high strength and hardness at elevated temperatures, up to approximately 1200°F (650°C).

Aplicaciones industriales

STELLITE® Alloy 6 is widely used across various industries for its wear and corrosion resistance properties:

Sector industrialAplicaciones
AeroespacialAircraft engine components, turbine blades, and wear-resistant coatings.
Petróleo y gasValve seats, pump components, and drilling tools exposed to abrasive environments and corrosive fluids.
Generación de energíaGas turbine blades, boiler components, and steam turbine seals requiring high wear resistance and durability.
Industrial MachineryCutting tools, extrusion dies, and wear plates in manufacturing equipment.

Formas y tamaños

STELLITE® Alloy 6 is available in various forms and sizes to meet specific application requirements:

  • Formas: Láminas, placas, barras, tubos y formas personalizadas.
  • Tamaños: Espesor que varía de 0,025 pulgadas a 1,000 pulgadas (0,64 mm a 25,4 mm), diámetro que varía de 0,25 pulgadas a 6,0 pulgadas (6,35 mm a 152,4 mm).

Estándares de producción

STELLITE® Alloy 6 complies with industry standards for quality and performance:

Formulario de productoFormas disponiblesTamaños disponiblesEstándares de producción
BarrasBarras redondas, barras cuadradasDiámetro: 0,25″ – 6,0″ (6,35 mm – 152,4 mm)ASTM A732
Platos/HojasPlatos, HojasEspesor: 0,025″ – 1,000″ (0,64 mm – 25,4 mm)ASTM A732
Welding RodsRodsDiameter: 0.125″ – 0.500″ (3.18mm – 12.7mm)AWS A5.13

Soldadura y procesamiento

STELLITE® Alloy 6 offers good weldability and machinability:

  • Soldadura: Can be welded using conventional methods such as TIG and MIG welding with preheating and post-weld heat treatment to maintain properties.
  • Procesando: Machinable using carbide tooling, although high cobalt content requires slower speeds and heavy feed rates.

Ventajas y desventajas

AspectoDetalles
VentajasHigh wear resistance, excellent strength at elevated temperatures, good corrosion resistance, and suitability for extreme environments.
DesventajasHigher cost compared to conventional materials, requires specialized machining and welding techniques due to high cobalt content.

Aleaciones similares

Nombre de la aleaciónComparación
STELLITE® Alloy 12Lower carbon content, offering improved weldability and machinability compared to Alloy 6.

Comparación de aleaciones similares

Propiedad/CaracterísticaSTELLITE® Alloy 6STELLITE® Alloy 12
Contenido de cobalto (%)54.0 – 62.031.0 – 35.0
Contenido de cromo (%)27.0 – 32.08.0 – 10.0
Tungsten Content (%)8.0 – 10.00.5 máx.
Dureza, Rockwell C (HRC)48 – 5528 – 36
AplicacionesValve components, extrusion diesWelding electrodes, pump parts

This comprehensive article offers a detailed introduction to STELLITE® Alloy 6, highlighting its chemical composition, mechanical properties, performance characteristics, industry applications, available forms and sizes, production standards, welding and processing capabilities, as well as advantages, disadvantages, and comparisons with similar alloys. Engineers and professionals seeking high-performance materials for wear and corrosion resistance applications will find this information invaluable for selecting the appropriate alloy for their specific needs.