Hastelloy B2 Bar

Our Hastelloy B2 Bar is a solid solution strengthened, 
nickel-molybdenum alloy, with significant resistance to reducing 
environments like hydrogen chloride gas, and sulfuric, acetic and 
phosphoric acids. Molybdenum is the primary alloying element which 
provides significant corrosion resistance to reducing environments. This
nickel steel alloy can be used in the as-welded condition because it 
resists the formation of grain-boundary carbide precipitates in the weld
heat-affected zone.

This nickel alloy provides excellent 
resistance to hydrochloric acid at all concentrations and temperatures. 
In additions, Hastelloy B2 has excellent resistance to pitting, stress 
corrosion cracking and to knife-line and heat-affected zone attack. 
Alloy B2 provides resistance to pure sulfuric acid and a number of 
non-oxidizing acids.

Limiting Factors of Hastelloy B2

Alloy
B-2 has poor corrosion resistance to oxidizingenvironments, therefore, 
it is not recommended for use in oxidizing media or in the presence of 
ferric or cupric salts because they may cause rapid premature corrosion 
failure. These salts may develop when hydrochloric acid comes in contact
with iron and copper. Therefore, if this alloy is used in conjunction 
with iron or copper piping in a system containing hydrochloric acid, the
presence of these salts could cause the alloy to fail prematurely. In 
addition, this nickel steel alloy should not be used at temperatures 
between 1000° F and 1600° F because of a reduction in the ductility in 
the alloy.

What are the characteristics of Hastelloy B2:

• 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

Chemical Composition:

ASTM Specifications:

Mechanical Properties: