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.
Composizione chimica
Elemento
Composizione (%)
Nichel (Ni)
66.0 min
Cromo (Cr)
21.0 – 23.5
Ferro (Fe)
5.0 – 7.0
Molibdeno (Mo)
6.0 – 8.0
Rame
1.0 – 2.5
Manganese (Mn)
1,0 massimo
Silicon (Si)
0.70 max
Carbonio (C)
0.05 – 0.15
Zolfo (S)
00,015 massimo
Fosforo (P)
00,015 massimo
Proprietà meccaniche
Proprietà
Valore
Resistenza alla trazione, ksi (MPa)
110 (760) min
Limite di snervamento (compensazione dello 0,2%), ksi (MPa)
52 (360) min
Allungamento (% in 2 pollici)
40 min
Durezza, Rockwell C (HRC)
25 – 35
Prestazioni a diverse temperature
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.
Applicazioni industriali
HASTELLOY® G™ alloy finds applications across various industries due to its superior corrosion resistance:
Settore industriale
Applicazioni
Elaborazione chimica
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.
Olio e gas
Components in refineries and petrochemical plants exposed to sour gas environments containing hydrogen sulfide.
Pharmaceutical
Pharmaceutical processing equipment requiring resistance to harsh chemicals.
Shapes, Sizes, and Production Standards
Forma del prodotto
Forme disponibili
Taglie disponibili
Standard di produzione
Sheets/Plates
Plates, Sheets
Thickness: 0.025″ – 1.000″ (0.64mm – 25.4mm)
ASTM B582
Barre
Round bars, hexagonal bars
Diameter: 0.25″ – 6.0″ (6.35mm – 152.4mm)
ASTM B582
Tubes/Pipes
Seamless tubes, welded pipes
OD: 0.5″ – 6.0″ (12.7mm – 152.4mm)
ASTM B619, ASTM B622
Standards and Corresponding Grades
Paese/regione
Standard/Grade
Stati Uniti d'America
UNS N06007
Europe
2.4618
Germania
NiCr23Mo16Cu
Francia
NC23FeDU
Welding, Processing, Polishing, Heat Treatment
Process
Dettagli
Saldatura
Excellent weldability using TIG, MIG methods, ensuring strong and reliable joints in corrosive environments.
in lavorazione
Machinable using conventional methods, offering flexibility in fabrication processes.
Lucidatura
Capable of achieving smooth finishes for enhanced corrosion resistance and aesthetic appeal.
Trattamento termico
Annealing at 2050°F (1121°C) followed by rapid quenching optimizes material properties and performance.
Cold Processing, Advantages, and Disadvantages
Aspetto
Dettagli
Lavorazione a freddo
Retains ductility and formability at room temperature, facilitating shaping and fabrication.
Vantaggi
Exceptional resistance to a wide range of aggressive chemicals, high mechanical strength, and reliability in extreme environments.
Svantaggi
Higher initial cost compared to conventional stainless steels, limited availability of specific shapes and sizes.
Similar Products
Product Name
Comparison
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
Property/Feature
Hastelloy G™
Hastelloy C-276
Hastelloy C-22
Nickel Content (%)
66.0
57.0
56.0
Molybdenum Content (%)
6.0 – 8.0
15.0 – 17.0
12.5 – 14.5
Chromium Content (%)
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
Resistenza alla corrosione
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.
