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.
Composition chimique
Élément
Composition (%)
Nickel (Ni)
65.0 min
Molybdène (Mo)
26,0 – 30,0
Fer (Fe)
2,0 maximum
Chrome (Cr)
1,0 maximum
Cobalt (Co)
1,0 maximum
Manganèse (Mn)
1,0 maximum
Silicium (Si)
00,10 maximum
Carbone (C)
00,02 maximum
Phosphore (P)
0.040 max
Soufre (S)
00,030 maximum
Propriétés mécaniques
Propriété
Valeur
Résistance à la traction, ksi (MPa)
110 (760) min
Limite d'élasticité (compensation de 0,2 %), ksi (MPa)
51 (350) min
Allongement (% en 2 pouces)
40 minutes
Dureté, Rockwell B (HRB)
88 max
Performances à différentes températures
HASTELLOY B-2 demonstrates reliable performance across various temperature ranges:
Température ambiante :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.
Basses températures :Retains ductility and toughness even at cryogenic temperatures, suitable for applications requiring resilience in extreme conditions.
Applications industrielles
HASTELLOY alloy B-2 finds widespread use in several key industries:
Secteur industriel
Applications
Traitement chimique
Reactor vessels, heat exchangers, and piping systems handling aggressive acids like sulfuric, hydrochloric, and phosphoric acids.
Pétrochimique
Equipment for processing acids and chemicals in refineries and chemical plants.
Pharmaceutique
Pharmaceutical processing equipment requiring corrosion resistance to acids.
Pâtes et papiers
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.
Traitement
Machinable using conventional methods, offers flexibility in fabrication processes to meet specific design requirements.
Polissage
Capable of achieving smooth finishes for enhanced corrosion resistance, critical in applications requiring sanitary conditions.
Traitement thermique
Solution annealing at 1950°F (1065°C) followed by rapid quenching ensures optimal material properties and performance under stress.
Traitement à froid, avantages et inconvénients
Aspect
Détails
Traitement à froid
Retains ductility and formability at room temperature, facilitating shaping and forming processes in manufacturing.
Avantages
Exceptional resistance to reducing acids, high mechanical strength, and reliability in aggressive chemical environments.
Désavantages
Higher initial cost compared to conventional stainless steels, limited availability in certain shapes and sizes may require custom fabrication solutions.
Produits similaires
Nom du produit
Comparaison
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.
Comparaison de produits similaires
Propriété/caractéristique
HASTELLOY Alloy B-2 (UNS N10665)
HASTELLOY Alloy C-276 (UNS N10276)
HASTELLOY Alloy B-3 (UNS N10675)
Teneur en nickel (%)
65.0 min
57,0
65,0
Teneur en molybdène (%)
26,0 – 30,0
16,0
28,0
Teneur en chrome (%)
1,0 maximum
16,0
1,5
Résistance à la traction (ksi)
110 min
100 minutes
110 min
Limite d'élasticité (ksi)
51 min
40 minutes
40 minutes
Résistance à la corrosion
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.
