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Hastelloy B-2 Uns N10665 2.4617 Alloy

Hastelloy B-2 Uns N10665 2.4617 Alloy

Hastelloy B-2 Uns N10665 2.4617 Alloy

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Hastelloy B-2 Uns N10665 2.4617 Alloy





Chemical Composition


Alloy
 %
 Ni
 Mo
 Fe
 Cr
 Co
 C
 Mn
 V
 Si
 P
 S
UNS N10665
 Min
 Bal
 26.0
 2.0







UNS N10665
 Max
30.0
 7.0
 1.0 1.0 0.02 1.0
0.1 0.04 0.03


Physical Properties(Hastelloy B-2)


■Characteristic



Tensile strength
Rm N/mm²
 Yield Strength (0.2％ offset)
Rp0.2N/mm²
 Density
 Elongation
A5 ％
 Melting point
(℃)
690 310 9.24g/cm³
 40 1330-1380


Executive Standard


Sheet/Strip Seamless Tube
 Welded pipe
 Bar Forgings
ASTM B333
ASME SB333 		ASTM B622
ASME SB622 		ASTM B619/B626
ASME SB619/SB626
 ASTM B335
ASME SB335 		ASTM B564
ASME SB564

Features


1, Controls the minimum content of iron and chromium to prevent the formation of B-phase Ni4Mo.
2, Excellent corrosion resistance to reducing environment
3, Excellent resistance to moderate concentrations of sulfuric acid and many non-oxidizing acids
4, Very good resistance to chloride ion reduction stress corrosion cracking（SCC）
5, Excellent resistance to various organic acid corrosion

Corrosion Resistance


The nickel-molybdenum alloy Hastelloy B-2 has a very low carbon and silicon content, which reduces the precipitation of carbon and other impurity phases in the heat affected zone of the weld, so the weld seam also has sufficient corrosion resistance. The 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 medium concentration sulfuric acid solution (or contains a certain amount of chloride ions). It can also be used in acetic acid and phosphoric acid environments. Alloy materials have the best corrosion resistance only in the proper metallographic state and pure crystal structure.


Applications


Alloy Hastelloy B-2 has a wide range of applications in the fields of chemical, petrochemical, energy production and pollution control, especially in the industries of sulfuric acid, hydrochloric acid, phosphoric acid, acetic acid, etc.