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Hastelloy B3 alloy (UNS N10675) is an excellent resistance alloy to hydrochloric acid at all concentrations and temperatures. It also withstands sulfuric, acetic, formic and phosphoric acids, and other nonoxidizing media. B-3 alloy has a special chemistry designed to achieve a level of thermal stability greatly superior to that of its predecessors, e.g. HASTELLOY B-2 alloy.
B-3 alloy has excellent resistance to pitting corrosion, to stress-corrosion cracking and to knife-line and heat-affected zone attack. Alloy B-3 has poor corrosion resistance to oxidizing environments, 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 nickel steel 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.
|65.0 min||28.5||1.5||0.01 max||3.0 max||1.5||3.0 max||10 max||0.2 max||3.0 max||0.50 max||0.20 max|
|Coefficient of Thermal Expansion||5.7||6.1||6.3||6.5||6.6||6.5||7.1||7.6|
|Modulus of Elasticity||30.9||30.1||29.3||28.3||27.2||26.5||24.9||23.3|