INCONEL® Alloy 686: Comprehensive Product Introduction
Introduction to INCONEL® Alloy 686
INCONEL® alloy 686 is a versatile nickel-chromium-molybdenum-tungsten alloy known for its exceptional corrosion resistance in a wide range of aggressive environments. Developed as an upgrade over traditional nickel alloys, INCONEL® 686 offers superior resistance to localized corrosion, pitting, and crevice corrosion. This article provides a detailed overview of INCONEL® alloy 686, covering its chemical composition, mechanical properties, performance at different temperatures, corresponding grades, industry applications, available forms, sizes, and production standards across various countries.
Chemical Composition of INCONEL® Alloy 686
INCONEL® alloy 686 is formulated with precise elements to achieve its corrosion-resistant properties:
| Elemento | Composição (%) |
|---|---|
| Níquel (Ni) | 58,0 minutos |
| Cromo (Cr) | 20,0-23,0 |
| Molibdênio (Mo) | 15.0-17.0 |
| Tungstênio (W) | 3.0-4.4 |
| Ferro (Fe) | 5,0 máx. |
| Cobalto (Co) | 1,0 máx. |
| Manganês (Mn) | 1,0 máx. |
| Silício (Si) | 00,50 no máximo |
| Carbono (C) | 00,020 máx. |
| Fósforo (P) | 00,015 máx. |
| Enxofre (S) | 00,010 máx. |
Mechanical Properties of INCONEL® Alloy 686
INCONEL® alloy 686 exhibits robust mechanical properties suitable for demanding applications:
| Propriedade | Valor |
|---|---|
| Resistência à tracção | 760 MPa (110 ksi) min |
| Força de rendimento (compensação de 0,2%) | 345 MPa (50 ksi) min |
| Alongamento | 40% min |
| Dureza (Brinell) | 200-250 (varies with heat treatment) |
| Densidade | 8.68 g/cm³ |
Desempenho em diferentes temperaturas
INCONEL® alloy 686 maintains its corrosion resistance and mechanical properties across a wide range of temperatures:
| Faixa de temperatura | Desempenho |
|---|---|
| Temperatura do quarto | High resistance to corrosion and mechanical strength |
| Elevated Temperatures (up to 1000°C / 1832°F) | Mantém força e resistência à oxidação |
| Temperaturas Criogênicas | Mantém ductilidade e tenacidade |
Notas correspondentes em diferentes países
INCONEL® alloy 686 is recognized by various grades in different countries and regions:
| País/Região | Nota |
|---|---|
| EUA | UNS N06686 |
| Alemanha | 2.4606 |
| França | – |
| Reino Unido | – |
| Japão | – |
| China | – |
Formulários, tamanhos e padrões de produção padrão
Formas e Tamanhos
INCONEL® alloy 686 is available in various forms and sizes to meet industrial requirements:
| Forma | Faixa de tamanho |
|---|---|
| Folhas | Espessura: 0,1 mm – 50 mm |
| Pratos | Espessura: 0,3 mm – 100 mm |
| Barras | Diâmetro: 5mm – 300mm |
| Arame | Diâmetro: 0,1 mm – 10 mm |
| Tubos | Diâmetro externo: 6 mm – 200 mm |
| Tubos | Diâmetro externo: 10 mm – 300 mm |
| Acessórios | Várias configurações conforme padrões |
| Forjados | Vários formatos e tamanhos conforme padrões |
Padrões de produção
INCONEL® alloy 686 conforms to international production standards:
| Padrão | Descrição |
|---|---|
| ASTM B462 | Forjados |
| ASTM B564 | Barras e forjados |
| ASTM B574 | Varas |
| ASTM B575 | Plates and sheets |
| ASTM B619/B622 | Welded and seamless pipes and tubes |
| ASTM B366 | Acessórios |
Industry Applications of INCONEL® Alloy 686
INCONEL® alloy 686 is widely utilized across various industries due to its superior corrosion resistance and mechanical properties:
- Processamento Químico: Reactors, vessels, and piping systems handling acids, alkalis, and mixed chemicals.
- Petróleo e Gás: Equipment in sour gas environments, including downhole components and pipelines.
- Celulose e Papel: Digesters, bleach plants, and recovery boilers.
- Geração de energia: Flue gas desulfurization systems, scrubbers, and heat exchangers.
- Marinho: Propeller shafts, seawater cooling systems, and marine exhaust systems.
Advantages of INCONEL® Alloy 686
- Superior Corrosion Resistance: Excellent resistance to localized corrosion and pitting.
- Alta resistência: Maintains mechanical integrity in harsh environments.
- Versatility: Suitable for both high and low-temperature applications.
- Longevidade: Provides long-term reliability in corrosive environments.
Conclusão
INCONEL® alloy 686 stands as a high-performance alloy designed to excel in corrosive environments where traditional materials fall short. With its unique combination of chemical composition, mechanical properties, and adherence to international standards, it serves critical applications across global industries. Engineers and designers seeking durability and reliability in aggressive chemical and marine environments can confidently consider INCONEL® alloy 686 for their projects.
Para especificações técnicas detalhadas e consultas adicionais, recomenda-se consultar fichas de dados de produtos específicos e consultar os fabricantes.
This comprehensive introduction and detailed data sheet provide a thorough overview of INCONEL® alloy 686, emphasizing its chemical composition, mechanical properties, performance characteristics at different temperatures, applications, and advantages in demanding industrial environments across various countries.