Hastelloy B/B-2
Hastelloy B2 is a nickel-molybdenum alloy with significant resistance to reducing environments such as hydrogen chloride gas, sulfuric acid, acetic acid and phosphoric acid. Hastelloy B2 is resistant to pure sulfuric acid and a wide range of non-oxidizing acids. This alloy should not be used in oxidizing media or where oxidizing contaminants are present in reducing media. If Alloy B2 is used in the presence of iron or copper in systems containing hydrochloric acid, premature failure may occur.
Industrial users like its resistance to a wide range of organic acids and resistance to chloride-induced stress corrosion cracking.
Hastelloy B/B-2(UNS N10665/W.Nr.2.4617)
Product Description:
Hastelloy B2 is a nickel-molybdenum alloy with significant resistance to reducing environments such as hydrogen chloride gas, sulfuric acid, acetic acid and phosphoric acid. Hastelloy B2 is resistant to pure sulfuric acid and a wide range of non-oxidizing acids. This alloy should not be used in oxidizing media or where oxidizing contaminants are present in reducing media. If Alloy B2 is used in the presence of iron or copper in systems containing hydrochloric acid, premature failure may occur.
Industrial users like its resistance to a wide range of organic acids and resistance to chloride-induced stress corrosion cracking.
Hastelloy B2 prevents the formation of grain boundary carbide deposits in the heat affected zone of welding, making it suitable for most chemical process applications under welding conditions. The heat-affected weld zone reduces the precipitation of carbides and other phases to ensure uniform corrosion resistance.
Physical properties:
Density: 9.24g/c m³
Melting point: 1330-1380℃
Extreme chemical composition:
% | Ni | Cr | Fe | Mo | C | Mn | Si | S | P | Co | V | |
B | Min | Balance | 26 | 0.2 | ||||||||
Max | Balance | 1.0 | 2 | 30 | 0.05 | 1.0 | 1 | 0.03 | 0.04 | 2.5 | 0.4 | |
B-2 | Min | Balance | 26 | |||||||||
Max | Balance | 1.0 | 2 | 30 | 0.02 | 1.0 | 0.1 | 0.03 | 0.04 | 1.0 |
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% |
Solution treatment | 690 | 310 | 40 |
characteristic:
Great resistance to stress corrosion cracking and pitting
Significant resistance to reducing conditions like hydrogen chloride, sulfuric, acetic and phosphoric acids
Resistance to hydrochloric acid at all concentrations and temperatures
Applications:
Superior resistance to hydrochloric acid, aluminum chloride catalysts and other strongly reducing chemicals. Excellent high-temperature strength in inert and vacuum atmospheres.
Hastelloy B2 is a nickel-molybdenum alloy particularly suited for equipment handling reducing chemical environments .
Applications in the chemical process industry involving sulfuric, phosphoric, hydrochloric and acetic acid. Temperature uses vary from ambient temperature to 1500°F depending on the environments.
Form:
Bar, loose coil, sheet/plate, fasteners.