Super Alloy HASTELLOY® G™ (UNS N06007) Product Introduction
HASTELLOY® G™ (UNS N06007) is a highly corrosion-resistant nickel-chromium-iron-molybdenum alloy designed for extreme environments where resistance to oxidizing and reducing acids is critical. This article provides a comprehensive introduction to HASTELLOY® G™ alloy, detailing its chemical composition, mechanical properties, performance across 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)
66.0 min
Chrome (Cr)
21.0 – 23.5
Fer (Fe)
5.0 – 7.0
Molybdène (Mo)
6,0 – 8,0
Cuivre
1.0 – 2.5
Manganèse (Mn)
1,0 maximum
Silicium (Si)
0.70 max
Carbone (C)
00,05 – 0,15
Soufre (S)
00,015 maximum
Phosphore (P)
00,015 maximum
Propriétés mécaniques
Propriété
Valeur
Résistance à la traction, ksi (MPa)
110 (760) min
Limite d'élasticité (compensation de 0,2 %), ksi (MPa)
52 (360) min
Allongement (% en 2 pouces)
40 minutes
Dureté, Rockwell C (HRC)
25 – 35
Performances à différentes températures
HASTELLOY® G™ alloy exhibits excellent performance across varying temperature ranges:
Room Temperature:Exceptional resistance to oxidizing and reducing acids such as sulfuric acid, nitric acid, and hydrochloric acid.
Elevated Temperatures:Maintains high strength and corrosion resistance up to 1800°F (980°C), making it suitable for high-temperature chemical processing.
Low Temperatures:Retains ductility and toughness at cryogenic temperatures, ensuring reliability in extreme environments.
Applications industrielles
HASTELLOY® G™ alloy finds applications across various industries due to its superior corrosion resistance:
Secteur industriel
Applications
Traitement chimique
Reactors, heat exchangers, and piping systems handling aggressive chemicals such as acids and chlorides.
Pulp and Paper
Equipment for bleach plants, digesters, and evaporators exposed to corrosive media.
Pétrole et Gaz
Components in refineries and petrochemical plants exposed to sour gas environments containing hydrogen sulfide.
Pharmaceutical
Pharmaceutical processing equipment requiring resistance to harsh 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)
ASTM B582
Barres
Round bars, hexagonal bars
Diamètre : 0,25″ – 6,0″ (6,35 mm – 152,4 mm)
ASTM B582
Tubes/Tuyaux
Seamless tubes, welded pipes
OD: 0.5″ – 6.0″ (12.7mm – 152.4mm)
ASTM B619, ASTM B622
Normes et notes correspondantes
Pays/Région
Standard/Grade
USA
UNS N06007
Europe
2.4618
Allemagne
NiCr23Mo16Cu
France
NC23FeDU
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 aggressive chemicals, high mechanical strength, and reliability in extreme environments.
Désavantages
Higher initial cost compared to conventional stainless steels, limited availability of specific shapes and sizes.
Produits similaires
Product Name
Comparaison
HASTELLOY C-276 (UNS N10276)
Higher molybdenum content and broader resistance to oxidizing and reducing environments compared to G™ alloy.
HASTELLOY C-22 (UNS N06022)
Higher chromium content and resistance to oxidizing and reducing acids, including wet chlorine and ferric and cupric chlorides.
Comparison of Similar Products
Propriété/caractéristique
Hastelloy G™
Hastelloy C-276
Hastelloy C-22
Teneur en nickel (%)
66.0
57,0
56,0
Teneur en molybdène (%)
6,0 – 8,0
15.0 – 17.0
12.5 – 14.5
Teneur en chrome (%)
21.0 – 23.5
14.5 – 16.5
20.0 – 22.5
Tensile Strength (ksi)
110 min
110 min
115 min
Yield Strength (ksi)
52 min
52 min
55 min
Résistance à la corrosion
Excellent in oxidizing and reducing acids, including sulfuric, nitric, and hydrochloric acid.
Excellent in a wide range of corrosive environments, including strong oxidizers and reducing agents.
Excellent in oxidizing and reducing acids, including wet chlorine and ferric and cupric chlorides.
This comprehensive article provides a detailed introduction to HASTELLOY® G™ alloy (UNS N06007), encompassing 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.
