Hastelloy C-22
HASTELLOY® C-22® alloy (UNS N06022) is one of the well-known and well-proven nickelchromium-molybdenum materials, the chief attributes of which are resistance to both oxidizing and non-oxidizing chemicals, and protection from pitting, crevice attack, and stress corrosion cracking. Its high chromium content provides much higher resistance to oxidizing media than the family standard, C-276 alloy, and imparts exceptional resistance to chloride-induced pitting, an insidious and unpredictable form of attack, to which the stainless steels are prone
Hastelloy C-22(UNS NO6022/W.Nr.2.4602)
Product Description:
HASTELLOY® C-22® alloy (UNS N06022) is one of the well-known and well-proven nickelchromium-molybdenum materials, the chief attributes of which are resistance to both oxidizing and non-oxidizing chemicals, and protection from pitting, crevice attack, and stress corrosion cracking. Its high chromium content provides much higher resistance to oxidizing media than the family standard, C-276 alloy, and imparts exceptional resistance to chloride-induced pitting, an insidious and unpredictable form of attack, to which the stainless steels are prone.
Physical properties:
Density: 8.9g/cm³
Melting point: 1325-1370℃
Extreme chemical composition:
Nickel: balance
Chromium: 20-22.5
Iron: 2-6
Molybdenum: 12.5-14.5
Carbon: 0.0015max
Manganese: 0.5 max
Silicon: 0.08 max
Sulfur: 0.02 max
Phosphorus: 0.02 max
Cobalt: 2.5max
Vanadium: 0.35max
Tungsten: 2.5-3.5
Copper: 0.5max
The minimum mechanical properties of the alloy at room temperature:
Typical mechanical properties | Tensile Strength Rm N/m㎡ | Yield Strength RP0.2 N/ m㎡ | Elongation A5% | test temperature/℃ |
Solution treatment | 690 | 283 | 40 | normal temperature |
characteristic:
Provides better overall corrosion resistance than other existing nickel-chromium-molybdenum alloys
Excellent resistance to oxidation in aqueous media, including wet chlorine, nitric acid or mixed acids containing chloride ions.
Applications:
Hastelloy 22 has found widespread use in the chemical/petrochemical processing, pollution control (flue gas desulfurization), power generation, marine, pulp and paper processing, and waste management industries. The high chromium content of Hastelloy C-22 alloy helps it resist oxidation, carburization and sulfidation at elevated temperatures. Because it is nickel-based, Alloy 22 is resistant to high-temperature attack by halides such as chloride and fluoride. Due to these properties, the alloy is widely used to protect steel pipes and other components in coal-fired and waste-incineration boilers.
form:
Plates, strips, tubes, rods and forgings