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Hastelloy B

Hastelloy B-2 is collectively called Hastelloy B-2 ( Hastelloy ), and its density is 9.2g/cm3.
Quantity:
  • Hastelloy B (UNS NS3201)
  • Ronsco

Hastelloy B Alloy has a wide range of applications in the fields of chemistry, petrochemicals, energy manufacturing and pollution control, especially in industries such as sulfuric acid, hydrochloric acid, phosphoric acid, and acetic acid.


Chemical composition of Hastelloy B:


alloy
%
nickel
molybdenum
iron
chromium
cobalt
carbon
manganese
vanadium
silicon
phosphorus
sulfur
Hastelloy B
The smallest
margin
26
4.0




0.2



maximum
30
6.0
1.0
2.5
0.05
1.0
0.4
1.0
0.04
0.03


Hastelloy B-2
The smallest
margin
26
2.0








maximum
30
7.0
1.0
1.0
0.02
1.0

0.1
0.04
0.03



Physical properties of Hastelloy B:


density
9.24g/cm3
Melting point
1330-1380℃


Hastelloy B minimum mechanical properties:



Alloy and state
tensile strength
Rm N/mm2
Yield Strength
RP0.2N/mm2
Elongation
A5%
Hastelloy B
690
310
40


Hastelloy B alloy has the following characteristics


1. Control the minimum content of iron and chromium to prevent the formation of β-phase Ni4Mo.

2. Excellent corrosion resistance to reducing environment.

3. Excellent resistance to medium-concentration sulfuric acid and many non-oxidizing acids .

4. Very good resistance to chloride ion reduction stress corrosion cracking (SCC).

5. Excellent resistance to corrosion by various organic acids.


Metallographic structure of Hastelloy B:


Hastelloy B has a face-centered cubic lattice structure. By controlling the content of iron and chromium to the minimum, the processing brittleness is reduced and the precipitation of Ni4Mo phase at 700-870°C is prevented.


Corrosion resistance of Hastelloy B:


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


Hastelloy B Application Scope Application areas are:


Alloy Hastelloy B has a wide range of applications in the fields of chemistry, petrochemicals, energy manufacturing and pollution control, especially in industries such as sulfuric acid, hydrochloric acid, phosphoric acid, and acetic acid.

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