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.
Composizione chimica
Elemento
Composizione (%)
Nichel (Ni)
65.0 min
Molibdeno (Mo)
28.0 – 32.0
Ferro (Fe)
1,0 massimo
Cromo (Cr)
1.5 max
Cobalto (Co)
2,5 massimo
Manganese (Mn)
1,0 massimo
Silicon (Si)
00,10 massimo
Carbonio (C)
00,01 massimo
Fosforo (P)
00,015 massimo
Zolfo (S)
00,010 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)
94 max
Prestazioni a diverse temperature
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.
Basse temperature:Retains ductility and toughness down to cryogenic temperatures, suitable for applications requiring reliability in extreme conditions.
Applicazioni industriali
HASTELLOY B-3 is widely used in several critical industries:
Settore industriale
Applicazioni
Elaborazione chimica
Reactor vessels, heat exchangers, and piping systems handling corrosive acids and chemicals.
Petrolchimico
Equipment for processing sulfuric acid, acetic acid, and other aggressive chemicals in refineries.
Farmaceutico
Pharmaceutical processing equipment requiring corrosion resistance to acids and harsh environments.
Pulp and Paper
Bleach plant equipment, digesters, and other components exposed to corrosive chemicals in paper production.
Eccellente saldabilità con metodi TIG, MIG, garantendo giunti forti e affidabili in ambienti corrosivi.
in lavorazione
Lavorabile con metodi convenzionali, offre flessibilità nei processi di fabbricazione.
Lucidatura
In grado di ottenere finiture lisce per una maggiore resistenza alla corrosione e un aspetto estetico migliore.
Trattamento termico
Solution annealing at 1950°F (1065°C) followed by rapid quenching optimizes material properties and performance.
Lavorazione a freddo, vantaggi e svantaggi
Aspetto
Dettagli
Lavorazione a freddo
Mantiene la duttilità e la formabilità a temperatura ambiente, facilitando la modellatura e la fabbricazione.
Vantaggi
Exceptional resistance to a broad range of corrosive chemicals, high mechanical strength, and reliability in harsh environments.
Svantaggi
Higher initial cost compared to conventional stainless steels, potential limitations in availability of specific shapes and sizes.
Prodotti simili
Nome del prodotto
Confronto
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.
Confronto di prodotti simili
Proprietà/funzionalità
Hastelloy B-3
Hastelloy C-276
Hastelloy B
Contenuto di nichel (%)
65.0
57.0
65.0
Contenuto di molibdeno (%)
28.0 – 32.0
16.0
1.0
Contenuto di cromo (%)
1.5
16.0
1.0
Resistenza alla trazione (ksi)
110 minuti
100 min
110 minuti
Limite di snervamento (ksi)
51 min
40 minuti
51 min
Resistenza alla corrosione
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.
