Hastelloy B-2(UNSN10665) Ni-Mo alloy
Hastelloy B-2 nickel-molybdenum alloy has very low carbon and silicon content, which reduces the precipitation of carbon and other impurity phases in the zone affected by welding heat, so the weld seam also has sufficient corrosion resistance. Hastelloy B-2 has good corrosion resistance in reducing medium, such as hydrochloric acid solution at various temperatures and concentrations. also has good corrosion resistance in medium concentration sulfuric acid solution (or contains a certain amount of chloride ions). can also be used in acetic acid and phosphoric acid environment. Alloy materials can only have the best corrosion resistance when suitable metallographic state and pure crystal structure. has been widely used in chemical, petrochemical, energy manufacturing and pollution control fields, especially in sulfuric acid, hydrochloric acid, phosphoric acid, acetic acid and other industries.
Hastelloy B-2 common number corresponding
|
Category |
General name |
Number of German marks |
Unified Digital Number Number Number |
Cast plate |
|
Ni-Mo |
Hastelloy B-2GNiMo30 |
2.4882 |
N30007 |
N7M |
Inconel 600 other brands corresponding
|
Name |
GB of China |
ASTM of the United States |
DIN Germany |
British BS |
AFNOR France |
|||||||||
|
New brand |
Old brand |
|||||||||||||
|
Hastelloy B-2 |
NS3202 |
NS322 |
UNS N10665 |
W.Nr.2.4617(NiMo28) |
... |
NiMo28 |
||||||||
|
Hastelloy B-2 physical properties |
||||||||||||||
|
Density |
Melting point |
Thermal conductivity |
Specific heat capacity |
Elastic modulus |
Shear modulus |
resistivity |
Poisson's ratio |
Line expansion coefficient |
||||||
|
g/cm3 |
℃ |
λ/(W/m•℃) |
J/kg•℃ |
GPa |
GPa |
μΩ•m |
a/10-6℃-1 |
|||||||
|
9.2 |
1330 |
11.1(100℃) |
377 |
217 |
... |
1.37 |
... |
10.3(20~100℃) |
||||||
|
1380 |
||||||||||||||
Hastelloy B-2 chemical composition
|
Licence |
UNS No. |
Chemical element% |
C |
Mn |
Si |
P |
S |
Mo |
Fe |
Ni |
Cr |
Ksi[Mpa] of minimum tensile strength |
Minimum yield strength Ksi[Mpa] |
Minimum elongation,% gauge 2 inches [50 mm] |
|
N7M |
N30007 |
Max |
0.07 |
1.00 |
1.00 |
0.040 |
0.030 |
30.0-33.0 |
3.00 |
Balance |
1.0 |
76[525] |
40[275] |
20 |
Hastelloy B-2 corrosion properties
|
Medium |
|
The reduction of carbon content in the Hastelloy B ≤0.02%, which can reduce and delay the precipitation of carbides at high temperature and improve the resistance to intergranular corrosion in the sensitized state. Nickel-molybdenum alloy has 600~900℃ and 1300℃ of two intergranular corrosion-sensitized zones, in which the MoC,δ phase and Ni7Mo6 phase will precipitate, thus reducing the Mo content of grain boundary accessories, resulting in the sensitivity of intergranular corrosion |