HASTELLOY® C-2000® alloy (UNS N06200) is a highly corrosion-resistant nickel-chromium-molybdenum-tungsten alloy designed for use in extreme chemical environments. This article provides a detailed and rich introduction to HASTELLOY® C-2000® alloy, covering its chemical composition, mechanical properties, performance 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.
Chemical Composition
Element
Composition (%)
Nickel (Ni)
50.0 min
Chromium (Cr)
22.0 – 24.0
Molybdenum (Mo)
15.0 – 17.0
Tungsten (W)
3.0 – 4.5
Iron (Fe)
2.0 max
Cobalt (Co)
1.0 max
Manganese (Mn)
0.50 max
Carbon (C)
0.010 max
Silicon (Si)
0.08 max
Phosphorus (P)
0.025 max
Sulfur (S)
0.010 max
Mechanical Properties
Property
Value
Tensile Strength, ksi (MPa)
100 (690) min
Yield Strength (0.2% offset), ksi (MPa)
45 (310) min
Elongation (% in 2 inches)
40 min
Hardness, Rockwell C (HRC)
28 max
Performance at Different Temperatures
HASTELLOY® C-2000® alloy exhibits excellent performance across varying temperature ranges:
Room Temperature: Exceptional resistance to a wide range of corrosive chemicals, including sulfuric acid, acetic 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.
Industry Applications
HASTELLOY® C-2000® alloy is utilized in various industries due to its superior corrosion resistance:
Industry Sector
Applications
Chemical Processing
Reaction vessels, heat exchangers, and piping systems handling corrosive chemicals such as acids and chlorides.
Oil and Gas
Equipment exposed to sour gas environments containing hydrogen sulfide and other corrosive gases.
Pharmaceutical
Pharmaceutical processing equipment requiring resistance to aggressive chemicals.
Pulp and Paper
Components in bleach plants and digesters exposed to harsh chemical environments.
Shapes, Sizes, and Production Standards
Product Form
Shapes Available
Sizes Available
Production Standards
Sheets/Plates
Plates, Sheets
Thickness: 0.025″ – 1.000″ (0.64mm – 25.4mm)
ASTM B575
Bars
Round bars, hexagonal bars
Diameter: 0.25″ – 6.0″ (6.35mm – 152.4mm)
ASTM B574
Tubes/Pipes
Seamless tubes, welded pipes
OD: 0.5″ – 6.0″ (12.7mm – 152.4mm)
ASTM B619, ASTM B622
Standards and Corresponding Grades
Country/Region
Standard/Grade
USA
UNS N06200
Europe
2.4675
Germany
NiCr23Mo16Cu
France
NC23FeDU
Welding, Processing, Polishing, Heat Treatment
Process
Details
Welding
Excellent weldability using TIG, MIG methods, ensuring strong and reliable joints in corrosive environments.
Processing
Machinable using conventional methods, offering flexibility in fabrication processes.
Polishing
Capable of achieving smooth finishes for enhanced corrosion resistance and aesthetic appeal.
Heat Treatment
Annealing at 2050°F (1121°C) followed by rapid quenching optimizes material properties and performance.
Cold Processing, Advantages, and Disadvantages
Aspect
Details
Cold Processing
Retains ductility and formability at room temperature, facilitating shaping and fabrication.
Advantages
Superior resistance to a wide range of aggressive chemicals, high mechanical strength, and reliability in extreme environments.
Disadvantages
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 C-2000.
HASTELLOY B-3 (UNS N10675)
Enhanced thermal stability and resistance to reducing acids, suitable for more severe corrosive conditions than C-2000.
Comparison of Similar Products
Property/Feature
Hastelloy C-2000
Hastelloy C-276
Hastelloy B-3
Nickel Content (%)
50.0
57.0
65.0
Molybdenum Content (%)
15.0 – 17.0
15.0 – 17.0
1.0 – 3.0
Chromium Content (%)
22.0 – 24.0
14.5 – 16.5
1.5 – 3.0
Tensile Strength (ksi)
100 min
110 min
100 min
Yield Strength (ksi)
45 min
52 min
40 min
Corrosion Resistance
Excellent in oxidizing and reducing acids, including sulfuric, acetic, and hydrochloric acid.
Excellent in a wide range of corrosive environments, including strong oxidizers and reducing agents.
Excellent in reducing acids and severe corrosive conditions.
This comprehensive article provides a detailed introduction to HASTELLOY® C-2000® alloy (UNS N06200), 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.
