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.
| Elemento | Composición (%) |
|---|---|
| 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:
| Propiedad | Valor |
|---|---|
| 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 industrial | Aplicaciones |
|---|---|
| Aeroespacial | Aircraft engine components, turbine blades, and wear-resistant coatings. |
| Petróleo y gas | Valve seats, pump components, and drilling tools exposed to abrasive environments and corrosive fluids. |
| Generación de energía | Gas turbine blades, boiler components, and steam turbine seals requiring high wear resistance and durability. |
| Industrial Machinery | Cutting 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 producto | Formas disponibles | Tamaños disponibles | Estándares de producción |
|---|---|---|---|
| Barras | Barras redondas, barras cuadradas | Diámetro: 0,25″ – 6,0″ (6,35 mm – 152,4 mm) | ASTM A732 |
| Platos/Hojas | Platos, Hojas | Espesor: 0,025″ – 1,000″ (0,64 mm – 25,4 mm) | ASTM A732 |
| Welding Rods | Rods | Diameter: 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
| Aspecto | Detalles |
|---|---|
| Ventajas | High wear resistance, excellent strength at elevated temperatures, good corrosion resistance, and suitability for extreme environments. |
| Desventajas | Higher cost compared to conventional materials, requires specialized machining and welding techniques due to high cobalt content. |
Aleaciones similares
| Nombre de la aleación | Comparación |
|---|---|
| STELLITE® Alloy 12 | Lower carbon content, offering improved weldability and machinability compared to Alloy 6. |
Comparación de aleaciones similares
| Propiedad/Característica | STELLITE® Alloy 6 | STELLITE® Alloy 12 |
|---|---|---|
| Contenido de cobalto (%) | 54.0 – 62.0 | 31.0 – 35.0 |
| Contenido de cromo (%) | 27.0 – 32.0 | 8.0 – 10.0 |
| Tungsten Content (%) | 8.0 – 10.0 | 0.5 máx. |
| Dureza, Rockwell C (HRC) | 48 – 55 | 28 – 36 |
| Aplicaciones | Valve components, extrusion dies | Welding 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.