HASTELLOY alloy B-2 (UNS N10665) is a nickel-molybdenum alloy known for its excellent resistance to reducing acids such as hydrochloric acid, sulfuric acid, and phosphoric acid. It offers robust mechanical properties and reliability across a wide range of temperatures, making it suitable for various demanding applications in corrosive environments.
Composição química
Elemento
Composição (%)
Níquel (Ni)
65,0 minutos
Molibdênio (Mo)
26.0 – 30.0
Ferro (Fe)
2,0 máx.
Cromo (Cr)
1,0 máx.
Cobalto (Co)
1,0 máx.
Manganês (Mn)
1,0 máx.
Silício (Si)
00,10 máx.
Carbono (C)
00,02 máx.
Fósforo (P)
0.040 max
Enxofre (S)
00,030 máx.
Propriedades mecânicas
Propriedade
Valor
Resistência à tração, ksi (MPa)
110 (760) min
Força de rendimento (compensação de 0,2%), ksi (MPa)
51 (350) min
Alongamento (% em 2 polegadas)
40 minutos
Hardness, Rockwell B (HRB)
88 max
Desempenho em diferentes temperaturas
HASTELLOY B-2 demonstrates reliable performance across various temperature ranges:
Temperatura ambiente:Offers outstanding resistance to reducing acids, ensuring longevity in chemical processing equipment.
Elevated Temperatures (up to 1000°F / 538°C):Maintains high strength and corrosion resistance in challenging industrial environments.
Baixas temperaturas:Retains ductility and toughness even at cryogenic temperatures, suitable for applications requiring resilience in extreme conditions.
Aplicações Industriais
HASTELLOY alloy B-2 finds widespread use in several key industries:
Setor Industrial
Formulários
Processamento Químico
Reactor vessels, heat exchangers, and piping systems handling aggressive acids like sulfuric, hydrochloric, and phosphoric acids.
Petroquímica
Equipment for processing acids and chemicals in refineries and chemical plants.
Farmacêutico
Pharmaceutical processing equipment requiring corrosion resistance to acids.
Celulose e Papel
Digesters, bleach plants, and equipment for corrosive chemical environments in paper production.
Excellent weldability using TIG, MIG methods, suitable for joining components in corrosive environments without compromising integrity.
Processamento
Machinable using conventional methods, offers flexibility in fabrication processes to meet specific design requirements.
Polimento
Capable of achieving smooth finishes for enhanced corrosion resistance, critical in applications requiring sanitary conditions.
Tratamento térmico
Solution annealing at 1950°F (1065°C) followed by rapid quenching ensures optimal material properties and performance under stress.
Processamento a frio, vantagens e desvantagens
Aspecto
Detalhes
Processamento a frio
Retains ductility and formability at room temperature, facilitating shaping and forming processes in manufacturing.
Vantagens
Exceptional resistance to reducing acids, high mechanical strength, and reliability in aggressive chemical environments.
Desvantagens
Higher initial cost compared to conventional stainless steels, limited availability in certain shapes and sizes may require custom fabrication solutions.
Produtos Similares
Nome do produto
Comparação
HASTELLOY Alloy C-276 (UNS N10276)
Higher molybdenum content, broader corrosion resistance in severe environments, suitable for a wider range of chemicals.
HASTELLOY Alloy B-3 (UNS N10675)
Enhanced thermal stability, superior resistance to hydrochloric acid and other strong acids, ideal for applications requiring extended service life in aggressive chemical environments.
Comparação de produtos semelhantes
Propriedade/Recurso
HASTELLOY Alloy B-2 (UNS N10665)
HASTELLOY Alloy C-276 (UNS N10276)
HASTELLOY Alloy B-3 (UNS N10675)
Conteúdo de níquel (%)
65,0 minutos
57,0
65.0
Conteúdo de molibdênio (%)
26.0 – 30.0
16,0
28.0
Conteúdo de cromo (%)
1,0 máx.
16,0
1,5
Resistência à tração (ksi)
110 minutos
100 minutos
110 minutos
Força de rendimento (ksi)
51 min
40 minutos
40 minutos
Resistência à corrosão
Excellent in reducing environments, withstands sulfuric, hydrochloric, and phosphoric acids.
Wide range of corrosive environments, excellent resistance to oxidizing and reducing acids.
Exceptional resistance to strong acids including hydrochloric acid, sulfuric acid, and other harsh chemicals.
This article provides a comprehensive overview of HASTELLOY alloy B-2 (UNS N10665), highlighting its chemical composition, mechanical properties, performance characteristics at different temperatures, industry applications, available shapes and sizes, production standards, welding and processing capabilities, as well as advantages, disadvantages, and comparisons with similar products. Each section is presented in a structured table format to ensure clarity and accessibility of technical information, catering to engineers, manufacturers, and professionals in the chemical and industrial sectors.
