HASTELLOY B-3 (UNS N10675) is a nickel-molybdenum alloy renowned for its exceptional resistance to a wide range of aggressive chemicals, including hydrochloric acid, sulfuric acid, and other strong reducing agents. This article provides a comprehensive introduction to HASTELLOY B-3, covering 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.
Composição química
Elemento
Composição (%)
Níquel (Ni)
65,0 minutos
Molibdênio (Mo)
28.0 – 32.0
Ferro (Fe)
1,0 máx.
Cromo (Cr)
1.5 max
Cobalto (Co)
2,5 máx.
Manganês (Mn)
1,0 máx.
Silício (Si)
0.10 max
Carbono (C)
0.01 max
Fósforo (P)
00,015 máx.
Enxofre (S)
00,010 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)
94 max
Desempenho em diferentes temperaturas
HASTELLOY B-3 demonstrates excellent performance across various temperature ranges:
Temperatura ambiente:Superior resistance to reducing acids like hydrochloric, sulfuric, and phosphoric acids, making it ideal for chemical processing equipment.
Elevated Temperatures (up to 1000°F / 538°C):Maintains high strength and corrosion resistance in aggressive industrial environments.
Baixas temperaturas:Retains ductility and toughness down to cryogenic temperatures, suitable for applications requiring reliability in extreme conditions.
Aplicações Industriais
HASTELLOY B-3 is widely used in several critical industries:
Setor Industrial
Formulários
Processamento Químico
Reactor vessels, heat exchangers, and piping systems handling corrosive acids and chemicals.
Petrochemical
Equipment for processing sulfuric acid, acetic acid, and other aggressive chemicals in refineries.
Farmacêutico
Pharmaceutical processing equipment requiring corrosion resistance to acids and harsh environments.
Celulose e Papel
Bleach plant equipment, digesters, and other components exposed to corrosive chemicals in paper production.
Usinável usando métodos convencionais, oferecendo flexibilidade nos processos de fabricação.
Polimento
Capaz de obter acabamentos suaves para maior resistência à corrosão e apelo estético.
Tratamento térmico
Solution annealing at 1950°F (1065°C) followed by rapid quenching optimizes material properties and performance.
Processamento a frio, vantagens e desvantagens
Aspecto
Detalhes
Processamento a frio
Mantém ductilidade e conformabilidade à temperatura ambiente, facilitando a modelagem e a fabricação.
Vantagens
Exceptional resistance to a broad range of corrosive chemicals, high mechanical strength, and reliability in harsh environments.
Desvantagens
Higher initial cost compared to conventional stainless steels, potential limitations in availability of specific shapes and sizes.
Produtos Similares
Nome do produto
Comparação
Hastelloy C-276 (UNS N10276)
Higher nickel and molybdenum content, broader resistance to oxidizing and reducing environments.
Hastelloy B (UNS N10001)
Similar nickel content, lower molybdenum content, suitable for less severe corrosive conditions.
Comparação de produtos semelhantes
Propriedade/Recurso
Hastelloy B-3
Hastelloy C-276
Hastelloy B
Conteúdo de níquel (%)
65.0
57,0
65.0
Conteúdo de molibdênio (%)
28.0 – 32.0
16,0
1,0
Conteúdo de cromo (%)
1,5
16,0
1,0
Resistência à tração (ksi)
110 minutos
100 minutos
110 minutos
Força de rendimento (ksi)
51 min
40 minutos
51 min
Resistência à corrosão
Excellent in reducing acids like hydrochloric and sulfuric acid, high resistance to pitting and stress corrosion cracking.
Wide range of corrosive environments, including strong oxidizers and reducing agents.
Good resistance to reducing acids, moderate resistance to oxidizing environments.
This article serves as a detailed introduction to HASTELLOY B-3 (UNS N10675), highlighting 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 presentation using tables ensures clarity and accessibility of technical information, catering to engineers, manufacturers, and professionals seeking corrosion-resistant materials for demanding applications.
