HASTELLOY C276 (UNS N10276) is a highly versatile nickel-molybdenum-chromium alloy renowned for its exceptional corrosion resistance in a wide range of severe environments. This article provides a detailed and rich introduction to HASTELLOY C276, 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)
57.0 min
Cromo (Cr)
14,5 – 16,5
Molibdênio (Mo)
15h00 – 17h00
Ferro (Fe)
4.0 – 7.0
Tungstênio (W)
3.0 – 4.5
Cobalto (Co)
2,5 máx.
Manganês (Mn)
1,0 máx.
Vanádio (V)
00,35 máx.
Silício (Si)
0.08 max
Carbono (C)
00,010 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)
52 (355) min
Alongamento (% em 2 polegadas)
40 minutos
Dureza, Rockwell C (HRC)
28 – 36
Desempenho em diferentes temperaturas
HASTELLOY C276 exhibits excellent performance across varying temperature ranges:
Temperatura ambiente:Superior resistance to corrosive media including oxidizing and reducing environments.
Temperaturas Elevadas:Maintains high strength and corrosion resistance up to 2000°F (1093°C).
Baixas temperaturas:Retains ductility and toughness at cryogenic temperatures, suitable for extreme environments.
Aplicações Industriais
HASTELLOY alloy C276 is widely used in several industries due to its exceptional corrosion resistance:
Setor Industrial
Formulários
Processamento Químico
Reactors, heat exchangers, and piping systems handling acids, chlorides, and other corrosive chemicals.
Petrochemical
Equipment for sulfuric acid production, pollution control, and chemical processing units.
Petróleo e Gás
Components exposed to sour gas environments containing hydrogen sulfide.
Farmacêutico
Pharmaceutical processing equipment requiring resistance to aggressive chemicals.
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
O recozimento a 1.121°C (2.050°F) seguido de têmpera rápida otimiza as propriedades e o desempenho do material.
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 wide range of corrosive chemicals, high mechanical strength, and reliability in harsh environments.
Desvantagens
Custo inicial mais elevado em comparação aos aços inoxidáveis convencionais, disponibilidade limitada de formatos e tamanhos específicos.
Produtos Similares
Nome do produto
Comparação
HASTELLOY C-22 (UNS N06022)
Comparable corrosion resistance, with higher chromium and tungsten content in C-22 providing improved resistance to oxidizing media.
INCONEL 625 (UNS N06625)
Lower molybdenum content, suitable for moderate to high temperature applications but with lower overall corrosion resistance compared to C276.
Comparação de produtos semelhantes
Propriedade/Recurso
Hastelloy C276
Hastelloy C-22
INCONEL 625
Conteúdo de níquel (%)
57,0
56,0
61.0
Conteúdo de molibdênio (%)
15h00 – 17h00
12,5 – 14,5
8,0 – 10,0
Conteúdo de cromo (%)
14,5 – 16,5
20,0 – 22,5
20.0 – 23.0
Resistência à tração (ksi)
110 minutos
115 minutos
120 min
Força de rendimento (ksi)
52 minutos
55 minutos
60 min
Resistência à corrosão
Excelente em uma ampla variedade de ambientes corrosivos, incluindo oxidantes fortes e agentes redutores.
Excellent in oxidizing and reducing acids, including sulfuric, hydrochloric, and acetic acid.
Good resistance to oxidation and corrosion in high-temperature environments.
This comprehensive article provides a detailed introduction to HASTELLOY C276 (UNS N10276), covering 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 format using tables ensures clarity and accessibility of technical information, catering to engineers, manufacturers, and professionals seeking corrosion-resistant materials for demanding applications.
