Hastelloy C-276
Hastelloy C-276 Alloy
What is Hastelloy Alloy C-276?
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Hastelloy C-276 (UNS N10276 / W.Nr. 2.4819) is a very commonly used nickel-chromium-molybdenum alloy. Among superalloys, it is known for its high molybdenum content.
First, as a corrosion-resistant element, molybdenum brings very high resistance to reductive corrosion to the alloy. By combining with nickel and chromium, Hastelloy C-276 has very good overall corrosion resistance. Compared with stainless steel, its excellent resistance to stress corrosion cracking in chloride-containing solutions cannot be replaced.
Secondly, the solid solution strengthening effect of molybdenum and tungsten elements is very obvious, and they bring very high strength to Hastelloy C-276 alloy. Like other nickel alloys, Hastelloy C-276 has good ductility. It is easy to shape and weld.
Hastelloy C-276 alloy is well suited for gas melting arc (GMA/MIG), gas tungsten arc (GTA/TIG) and shielded metal arc (SMA/Stick) welding processes. Hastelloy C-276 is ideal for marine applications. Its corrosion resistance makes it resistant to various corrosive substances in flowing seawater for a long time. However, Hastelloy C-276 also has good overall performance at high temperatures. It is very suitable for the preparation equipment of various corrosive chemicals or the reactor of various acidic substances.
Hastelloy C-276 alloy exhibits extremely high resistance to chloride-induced pitting and crevice corrosion. These forms of corrosion are particularly prone to occur in austenitic stainless steels.
Similar to other nickel alloys, one of the key features of Hastelloy C-276 is its resistance to chloride-induced stress corrosion cracking.
Hastelloy C-276 has demonstrated exceptional ability to resist seawater corrosion. Sea water is the most common salt water solution. It is widely used in marine and offshore oil rigs and as a coolant in coastal installations.
Hastelloy C-276 is a solid solution alloy. This alloy has good solid solution strengthening effect. Hastelloy C-276 is stronger than stainless steel, and even stronger than most solid solution alloys. Therefore, it is also easier to increase strength through cold working.
Hastelloy C-276 Standards
ASTM B622
-Seamless Pipe & Tube
ASTM B619
-Welded Pipe & Tube
ASTM B574
-Rod, Bar
ASTM B575
-Plate, Sheet, Strip & Foil
Hastelloy C-276 Chemical Composition
Hastelloy C-276 Data Sheet
Hastelloy C-276 Equivalent Grades
STANDARD | WERKSTOFF NR. | UNS | GOST | AFNOR | JIS | BS | EN | OR |
Alloy C-276 | 2.4819 | N10276 | – | – | – | – | – | – |
Hastelloy C-276 Mechanical Properties
Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
8.89 g/cm3 | 1371 °C (2500 °F) | 650-950Mpa | 210-350Mpa | 65% – 55% |
Hastelloy C-276 Physical Properties
Melting Range | Specific Heat, 20°C (J/(g.K)) | Magnetic Permeability (20°C) | Thermal Conductivity, 20°C (W/(m.K)) | Curie Temperature (°C) |
1371 °C (2500 °F) | 440 | <1.0002 | 9.8 | -125 |
Hastelloy C-276 Applications
Hastelloy C-276 Related Resources
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