Hastelloy B- 2 alloy has similar grades in different countries and regions, as follows:
-US: Hastelloy B- 2, UNS N10665
-China: NS322
Europe: 2.4617
-Japan: NW0665
Hastelloy_ B2
Hastelloy B- 2 Alloy Properties
Hastelloy B- 2 is a nickel-molybdenum alloy known for its excellent resistance to reducing acid corrosion. The alloy is particularly suitable for corrosive environments of hydrochloric acid, sulfuric acid, phosphoric acid and other non-oxidizing acids.
Ingredients
|
element |
Content (%) |
|
Nickel (Ni) |
margin |
|
Molybdenum (Mo) |
26.0-30.0 |
|
Iron (Fe) |
2.0-6.0 |
|
Chromium (Cr) |
≤ 1.0 |
|
Silicon (Si) |
≤ 0.1 |
|
Manganese (Mn) |
≤ 1.0 |
|
carbon (C) |
≤ 0.01 |
|
Cobalt (Co) |
≤ 1.0 |
|
Phosphorus (P) |
≤ 0.04 |
|
Sulfur (S) |
≤ 0.03 |
physical properties
|
performance index |
value |
|
density |
9.24 g/cm³ |
|
melting point |
1330-1380°C |
|
Coefficient of thermal expansion (20-1000°C) |
11.5 x 10⁻⁶ /°C |
|
thermal conductivity |
12.1 W/(m·K) |
|
modulus of elasticity |
205 GPa |
heat treatment
|
Processing Steps |
Description |
|
solution treatment |
is heated at 1065-1120°C and then rapidly cooled to maintain corrosion resistance. |
machining and welding
·Cold working: suitable for cold drawing and cold rolling, which can increase strength.
·Hot processing: should be carried out between 950-1175°C.
·welding: suitable for TIG and MIG welding, solution heat treatment is recommended after welding to eliminate welding stress.
Application
·Chemical equipment: suitable for reactors and pipelines in hydrochloric acid, phosphoric acid and other non-oxidizing acid environments.
·Petrochemical industry: storage tanks and heat exchangers for corrosive acidic media.
·pesticide production: suitable for highly corrosive reaction medium production equipment.
·pollution control: equipment used to treat corrosive exhaust gases.
Hastelloy B- 2 alloys are available in different shapes and sizes, including plates, bars, wires and forgings.
