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Hastelloy B-2 characteristics and application areas: Hastelloy B-2 has extremely low carbon and silicon content, which reduces the precipitation of carbon and other impurity phases in the welding heat-affected zone, so its welds also have sufficient corrosion resistance.
Hastelloy B-2 has good corrosion resistance in reducing media, such as hydrochloric acid solutions of various temperatures and concentrations. It also has good corrosion resistance in moderately concentrated sulfuric acid solutions (or containing a certain amount of chloride ions). It can also be used in acetic acid and phosphoric acid environments. Alloy materials can have the best corrosion resistance only when they are in a suitable metallographic state and pure crystal structure. It has a wide range of applications in the fields of chemistry, petrochemicals, energy manufacturing and pollution control, especially in sulfuric acid, hydrochloric acid, phosphoric acid, acetic acid and other industries.
Hastelloy alloy is the general name for the commercial grades of nickel-based corrosion-resistant alloys produced by Hastelloy International Corporation of the United States.
Hastelloy B-2 similar grades: NS322 (China), NiMo28 (France), W.Nr.2.4617 (Germany)
chemical composition
Hastelloy B-2 Physical Properties
Density: 9.24g/cm3
Melting point: 1330-1380℃
Hastelloy B-2 Minimum mechanical properties of the alloy at room temperature
Alloy and Condition: Hastelloy B-2
Tensile strength Rm N/mm2: 690
Yield strength RPO.2N/mm2:310
Elongation A5 %:40
Hastelloy B-2 alloy has the following properties:
1. Control the content of iron and chromium at the lowest level to prevent the formation of β-phase Ni4Mo.
2. Excellent corrosion resistance to reducing environments.
3. Excellent corrosion resistance to medium concentration sulfuric acid and many non-oxidizing acids.
4. Very good resistance to chloride ion reduction stress corrosion cracking (SCC).
5. Excellent resistance to corrosion by various organic acids.
Hastelloy B-2 metallographic structure: Hastelloy B-2 has a face-centered cubic lattice structure. By controlling the iron and chromium content to a minimum, it reduces processing brittleness and prevents the precipitation of the Ni4Mo phase between 700-870°C.
Hastelloy B-2 Corrosion Resistance
Nickel-molybdenum alloy Hastelloy B-2 has extremely low carbon and silicon content, which reduces the precipitation of carbon and other impurity phases in the welding heat-affected zone, so its welds also have sufficient corrosion resistance. Alloy Hastelloy B-2 has good corrosion resistance in reducing media, such as hydrochloric acid solutions of various temperatures and concentrations. It also has good corrosion resistance in moderately concentrated sulfuric acid solutions (or containing a certain amount of chloride ions). It can also be used in acetic acid and phosphoric acid environments. Alloy materials can have the best corrosion resistance only when they are in a suitable metallographic state and pure crystal structure.
Hastelloy B-2 Application Scope Application areas:
Alloy Hastelloy B-2 has a wide range of applications in the fields of chemistry, petrochemicals, energy manufacturing and pollution control, especially in the sulfuric acid, hydrochloric acid, phosphoric acid, acetic acid and other industries.
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