| Type: | Stainless Steel Bars |
|---|---|
| Standard: | ASTM, AISI, GB, JIS, DIN, EN |
| Grade: | Inconel 625 |
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Product name:INCONEL alloy 22 austenitic advanced corrosion-resistant alloy round bar
INCONEL alloy 22 (UNS N06022; W. Nr. 2.4602; NiCr21Mo14W) is a fully austenitic advanced corrosion-resistant alloy that offers resistance to both aqueous corrosion and attack at elevated temperatures. This alloy provides exceptional resistance to general corrosion, pitting, crevice corrosion, intergranular attack, and stress corrosion cracking.
Alloy 22 has found numerous applications in the chemical/petrochemical processing, pollution control (flue gas desulfurization), power, marine, pulp and paper processing, and waste disposal industries.
Alloy 22 is nickel-base and typically contains 22% chromium, 14% molybdenum, and 3% tungsten. Iron is normally limited to less than 3%. The alloy's high content of chromium gives it good resistance to wet corrosion by oxidizing media.
Its contents of molybdenum and tungsten give the alloy resistance to wet reducing media (e.g., sulfuric and hydrochloric acids). Alloy 22 exhibits excellent resistance to corrosive attack by seawater under stagnant and flowing conditions.
At elevated temperatures, the high chromium level of INCONEL alloy 22 helps it resist oxidation, carburization, and sulfidation. Since it is nickel-base, alloy 22 resists high temperature attack by halides (e.g., chlorides and fluorides). With these attributes, the alloy is widely used to protect steel tubes and other components in coal-fired and waste-to-energy boilers.
Chemical Composition:
Nickel............................................................................Balance*
Chromium....................................................................20.0-22.5
Molybdenum ...............................................................12.5-14.5
Iron ..................................................................................2.0-6.0
Tungsten..........................................................................2.5-3.5
Cobalt ...........................................................................2.5 max.
Vanadium....................................................................0.35 max.
Carbon......................................................................0.015 max.
Manganese .................................................................0.50 max.
Sulfur ..........................................................................0.02 max.
Silicon .........................................................................0.08 max.
Phosphorus ................................................................0.02 max.
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