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.
Composizione chimica
Elemento
Composizione (%)
Nichel (Ni)
65.0 min
Molibdeno (Mo)
26.0 – 30.0
Ferro (Fe)
2,0 massimo
Cromo (Cr)
1,0 massimo
Cobalto (Co)
1,0 massimo
Manganese (Mn)
1,0 massimo
Silicon (Si)
00,10 massimo
Carbonio (C)
00,02 massimo
Fosforo (P)
00,040 massimo
Zolfo (S)
00,030 massimo
Proprietà meccaniche
Proprietà
Valore
Resistenza alla trazione, ksi (MPa)
110 (760) minuti
Limite di snervamento (compensazione dello 0,2%), ksi (MPa)
51 (350) min
Allungamento (% in 2 pollici)
40 minuti
Durezza, Rockwell B (HRB)
88 max
Prestazioni a diverse temperature
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.
Basse temperature:Retains ductility and toughness even at cryogenic temperatures, suitable for applications requiring resilience in extreme conditions.
Applicazioni industriali
HASTELLOY alloy B-2 finds widespread use in several key industries:
Settore industriale
Applicazioni
Elaborazione chimica
Reactor vessels, heat exchangers, and piping systems handling aggressive acids like sulfuric, hydrochloric, and phosphoric acids.
Petrolchimico
Equipment for processing acids and chemicals in refineries and chemical plants.
Farmaceutico
Pharmaceutical processing equipment requiring corrosion resistance to acids.
Pulp and Paper
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.
in lavorazione
Machinable using conventional methods, offers flexibility in fabrication processes to meet specific design requirements.
Lucidatura
Capable of achieving smooth finishes for enhanced corrosion resistance, critical in applications requiring sanitary conditions.
Trattamento termico
Solution annealing at 1950°F (1065°C) followed by rapid quenching ensures optimal material properties and performance under stress.
Lavorazione a freddo, vantaggi e svantaggi
Aspetto
Dettagli
Lavorazione a freddo
Retains ductility and formability at room temperature, facilitating shaping and forming processes in manufacturing.
Vantaggi
Exceptional resistance to reducing acids, high mechanical strength, and reliability in aggressive chemical environments.
Svantaggi
Higher initial cost compared to conventional stainless steels, limited availability in certain shapes and sizes may require custom fabrication solutions.
Prodotti simili
Nome del prodotto
Confronto
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.
Confronto di prodotti simili
Proprietà/funzionalità
HASTELLOY Alloy B-2 (UNS N10665)
HASTELLOY Alloy C-276 (UNS N10276)
HASTELLOY Alloy B-3 (UNS N10675)
Contenuto di nichel (%)
65.0 min
57.0
65.0
Contenuto di molibdeno (%)
26.0 – 30.0
16.0
28.0
Contenuto di cromo (%)
1,0 massimo
16.0
1.5
Resistenza alla trazione (ksi)
110 minuti
100 min
110 minuti
Limite di snervamento (ksi)
51 min
40 minuti
40 minuti
Resistenza alla corrosione
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.
