UNS N10665 (GB NS322 Hastelloy B-2/MA-B2)

Short Introduction:

  • GB NS322/Hastelloy B-2/GB NS322/UNS N10665/SEW VDIUV W.Nr.2.4617 NiMo28/AFNOR

  • NiMo28 is the face-centered cubic lattice structure. By controlling the content of iron and chromium at the minimum to reduce the processing brittle, prevent Ni4Mo precipitation during 700-870 ℃

    Category:

    Description

    GB NS322 / Hastelloy B-2 /UNS N10665/MA-B2

    GB NS322 / Hastelloy B-2 /UNS N10665/MA-B2

    GB NS322 Material grades and equivalents Hastelloy B-2/GB NS322/UNS N10665/SEW VDIUV W.Nr.2.4617/MA-B2

     GB NS322 Chemical compostion:

    Alloy

    %

    Ni

    Mo

    Fe

    Cr

    Co

    C

    Mn

    V

    Si

    P

    S

       GB NS322

    Min.

      Balance

    26

    4

    0.2

     Max.

     30

     6

     1

     2.5

    0.05

     1

     0.4

     1

     0.04

     0.03

     

     GB NS322 Physical properties:

    Density

    9.24g/cm3

    Melting point

    1330-1380℃

     

     GB NS322 Alloy minimum mechanical properties in the room temperature:

     Alloy state

    Tensile strength Rm N/mm2

    Yield strength RP0.2N/mm2

    Elongation A5 %

    GB NS322

    690

    310

    40

     

    Characteristic:

    1. Control of iron and chromium content to a minimum to prevent the generation of β-phase

    2. Excellent corrosion resistance of restore

    3. An excellent resist to concentration sulfuric acid medium and large number of non-oxidizing acid corrosion.

    4. A very good resistance of chloride reduction of stress corrosion cracking (SCC).

    5. Good corrosion resistance of various organic acids.

    Metallurgical structure:

    GB NS322  is the face-centered cubic lattice structure. By controlling the content of iron and chromium at the minimum to reduce the processing brittle, prevent Ni4Mo precipitation during 700-870 ℃.

    Corrosion resistance:

    Ni-Mo alloy  Hastelloy B-2, the carbon and silicon content is extremely low, reducing the HAZ carbon and other impurities precipitation, so the weld has sufficient corrosion resistance. Alloy Hastelloy B- 2 in the reduction of medium with very good corrosion resistance, such as a various temperature and concentration of hydrochloric acid. In the middle of the concentration of sulfuric acid solution (or contain a certain amount of chloride ions) also has very good corrosion resistance. At the same time can be used to acetic acid and phosphoric acid environment. Alloy material suitable only in the metallurgical structure and pure crystal structure in order to have the best corrosion resistance.

    Applied field:

    Alloy  Hastelloy B-2 with a wide range of applications in the field of chemical, petrochemical, energy manufacturing and pollution control , particularly in the sulfuric acid, hydrochloric acid, phosphoric acid, acetic acid, and other industries.

    Specifications:

     

     

    Plate, Sheet, Strip

     ASTM B333, ASME SB333

     Bar

    ASTM B 335, ASME SB335, (DUAL CERTIFIED TO ASTM B564, ASME    SB564ON 3-1/2 DIA. AND UP)

     Welded Pipe

    ASTM B619, ASME SB619, CLASS I or II, (ABOVE 8 SCH 40)       ASTM B775,ASME SB775

     Seamless Pipe

     ASTM B622, ASME SB622