Home > Hastelloy Alloy Pipes & Tubes Hastelloy Alloy B-2 Pipes & Tubes
Material Description
UNS N10665
Chemical Composition, %
Ni
Mo
Fe
C
Co
Cr
Mn
Si
P
S
Bal.
26.0-30.0
2.0 max
.02 max
1.0 max
1.0 max
1.0 max
.10 max
.040 max
.030 max
Alloy B-2 is a nickel-molybdenum alloy with significant resistance to
reducing environments, such as hydrogen chloride gas and sulfuric,
acetic and phosphoric acids. Alloy B-2 provides resistance to pure
sulfuric acid and a number of non-oxidizing acids. The alloy should not
be used in oxidizing media or where oxidizing contaminants are available
in reducing media. Premature failure may occur if B-2 is used where
iron or copper is present in a system containing hydrochloric acid.
Characteristics
● Good resistance to a wide range of organic acids and the resistance to chloride-induced stress-corrosion cracking.
● Good resistance to the formation of grain boundary carbide precipitates in the weld heat-affected zone, making it suitable for most chemical process applications in the as-welded condition. The heat-affected weld zones have reduced precipitation of carbides and other phases to ensure uniform corrosion resistance.
● Alloy B-2 also has excellent resistance to pitting and stress corrosion cracking.
Application
● Superior resistance to hydrochloric acid, aluminum chloride catalysts and other strongly reducing chemicals. Excellent high-temperature strength in inert and vacuum atmospheres.
● 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
Seamless Tube Information:
Specification: ASTM B-622 / ASME SB-622
Outside Diameter: 6.0-114 mm
Wall Thickness: 0.5-15 mm
Length: Max.24000mm (the maximum length is for the scope of special diameters and walls)
Other sizes are on the request