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.
Composition chimique
Élément
Composition (%)
Nickel (Ni)
57.0 min
Chrome (Cr)
14.5 – 16.5
Molybdène (Mo)
15.0 – 17.0
Fer (Fe)
4.0 – 7.0
Tungstène (W)
3.0 – 4.5
Cobalt (Co)
2.5 max
Manganèse (Mn)
1,0 maximum
Vanadium (V)
00,35 maximum
Silicium (Si)
0.08 max
Carbone (C)
0.010 max
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)
52 (355) min
Allongement (% en 2 pouces)
40 minutes
Dureté, Rockwell C (HRC)
28 – 36
Performances à différentes températures
HASTELLOY C276 exhibits excellent performance across varying temperature ranges:
Room Temperature:Superior resistance to corrosive media including oxidizing and reducing environments.
Elevated Temperatures:Maintains high strength and corrosion resistance up to 2000°F (1093°C).
Low Temperatures:Retains ductility and toughness at cryogenic temperatures, suitable for extreme environments.
Applications industrielles
HASTELLOY alloy C276 is widely used in several industries due to its exceptional corrosion resistance:
Secteur industriel
Applications
Traitement chimique
Reactors, heat exchangers, and piping systems handling acids, chlorides, and other corrosive chemicals.
Pétrochimique
Equipment for sulfuric acid production, pollution control, and chemical processing units.
Pétrole et Gaz
Components exposed to sour gas environments containing hydrogen sulfide.
Pharmaceutical
Pharmaceutical processing equipment requiring resistance to aggressive chemicals.
Formes, tailles et normes de production
Formulaire de produit
Formes disponibles
Tailles disponibles
Normes de production
Sheets/Plates
Plaques, Feuilles
Épaisseur : 0,025″ – 1,000″ (0,64 mm – 25,4 mm)
ASTMB575
Barres
Round bars, hexagonal bars
Diamètre : 0,25″ – 6,0″ (6,35 mm – 152,4 mm)
ASTMB574
Tubes/Tuyaux
Seamless tubes, welded pipes
OD: 0.5″ – 6.0″ (12.7mm – 152.4mm)
ASTM B622, ASTM B619
Normes et notes correspondantes
Pays/Région
Standard/Grade
USA
NOUS N10276
Europe
2.4819
Allemagne
NiMo16Cr15W
France
NC17D
Welding, Processing, Polishing, Heat Treatment
Processus
Détails
Soudage
Excellent weldability using TIG, MIG methods, ensuring strong and reliable joints in corrosive environments.
Processing
Machinable using conventional methods, offering flexibility in fabrication processes.
Polissage
Capable of achieving smooth finishes for enhanced corrosion resistance and aesthetic appeal.
Traitement thermique
Annealing at 2050°F (1121°C) followed by rapid quenching optimizes material properties and performance.
Cold Processing, Advantages, and Disadvantages
Aspect
Détails
Cold Processing
Retains ductility and formability at room temperature, facilitating shaping and fabrication.
Avantages
Exceptional resistance to a wide range of corrosive chemicals, high mechanical strength, and reliability in harsh environments.
Désavantages
Higher initial cost compared to conventional stainless steels, limited availability of specific shapes and sizes.
Produits similaires
Product Name
Comparaison
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.
Comparison of Similar Products
Propriété/caractéristique
Hastelloy C276
Hastelloy C-22
INCONEL 625
Teneur en nickel (%)
57,0
56,0
61.0
Teneur en molybdène (%)
15.0 – 17.0
12.5 – 14.5
8.0 – 10.0
Teneur en chrome (%)
14.5 – 16.5
20.0 – 22.5
20.0 – 23.0
Tensile Strength (ksi)
110 min
115 min
120 min
Yield Strength (ksi)
52 min
55 min
60 min
Résistance à la corrosion
Excellent in a wide range of corrosive environments, including strong oxidizers and reducing agents.
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.
