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    4. Welcome to: Danyang Hualong Special Steel Co., Ltd. official website
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      Hastelloy B

      Hastelloy B

      Hastelloy B's chemical composition:

      Alloy

      %

      Ni

      Mo

      Fe

      Cr

      Co

      C

      Mn

      V

      Si

      P

      S

      Hastelloy B

      Min

      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

      Min

      Margin

      26

      2.0









      Maximum

      30

      7.0

      1.0

      1.0

      0.02

      1.0


      0.1

      0.04

      0.03

      Hastelloy B physical properties:

      Density

      9.24g/cm3

      Melting point

      1330-1380℃

      Hastelloy B at room temperature alloy mechanical properties of the minimum:

      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 features:
      1. Control of iron and chromium in the lowest content, preventing the formation of β-phase Ni4Mo.
      2. Excellent corrosion resistance to reducing environment.
      3. Excellent resistance to medium concentrations of sulfuric acid and many non-oxidizing acid corrosion.
      4. Good resistance to chloride ion stress corrosion cracking (SCC).
      Excellent resistance to all kinds of organic acid corrosion. Hastelloy B's metallographic structure:

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

      Hastelloy B corrosion resistance:

      Nickel-molybdenum alloy Hastelloy B has a very low carbon content and lowers the precipitation of carbon and other impurity phases in the weld heat-affected zone. Therefore, the weld is also sufficiently corrosion-resistant. Alloy Hastelloy B-2 has good corrosion resistance in reducing media, such as hydrochloric acid solutions of various temperatures and concentrations. In the medium concentration of sulfuric acid solution (or contain a certain amount of chloride ion) also has good corrosion resistance. At the same time can also be used for acetic acid and phosphate environment. Alloy materials have the best corrosion resistance only in the proper metallurgical state and pure crystalline structure.
      Hastelloy B Applications Areas of application are:
      Alloy Hastelloy B has a wide range of applications in the chemical, petrochemical, energy manufacturing and pollution control industries, especially in the sulfuric acid, hydrochloric acid, phosphoric acid, acetic acid and other industries.


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