Hastelloy C22 Round Bar
Hastelloy C22 bar is a versatile austenitic nickel-chromium-molybdenum-tungsten alloy with better overall corrosion resistance compared to other nickel-chromium-molybdenum alloys, including alloy C-276, alloy C4 and alloy 625.
Chemical Composition
|
GRADE |
Ni |
Cr |
p |
Si |
S |
Mn |
C |
V |
Co |
W |
Fe |
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
ALLOY C-22 |
Min |
BALANCE |
20 |
– |
– |
– |
– |
– |
– |
– |
2.5 |
2 |
|
Max |
22.5 |
0.02 |
0.08 |
0.02 |
0.5 |
0.015 |
0.35 |
0.25 |
3.5 |
6 |
The high chromium content provides good resistance to oxidizing media while the molybdenum and tungsten content give good resistance to reducing media. This combination of corrosion resistance makes alloy 22 particularly useful in applications where mixed acids are present.
Properties
Hastelloy C22 bar can with enhanced resistance to pitting, crevice corrosion and stress corrosion cracking. This nickel steel alloy also has excellent resistance to oxidizing aqueous media including wet chlorine and mixtures containing nitric acid or oxidizing acids with chlorine ions.
Mechanical Properties
|
Grade |
Tensile Strength |
Yield Strength |
Elongation |
|---|---|---|---|
|
[MPA] |
[MPA] |
(% in 50mm) min |
|
|
Hastelloy C-22 |
690 |
310 |
45 |
Alloy C-22 bar is a great alternative when super austenitic stainless steels ( AL-6XN,904L, and 254 SMO) and duplex stainless steels (2205 and 2507) will not withstand extremely aggressive media. The grade also offers improved properties of resistance to the environment where there are reducing and oxidizing conditions.
Physical Properties
|
Grade |
Density (g/cm3) |
Elastic Modulus (GPa) |
Coeff of Thermal Expansion (μm/m/°C) |
Thermal Conductivity (W/m.K) |
Electrical Resistivity (Ωμ.m) |
Elastic Modulus (GPa) |
Specific Heat (J/Kg.K) |
Melting Range |
|---|---|---|---|---|---|---|---|---|
|
24-100°C |
0-100°C |
at 100°C |
||||||
|
Alloy C-22 |
8.69 |
220 |
12.4 |
11.1 |
1.23 |
206 |
423 |
1399 |
Specification
The Specification for Hastelloy C22 bar as per astm Standard is ASTM B 574/ASME SB-574, the arelloo categorised into different form and shape such as Hastelloy C-22 Round Bar, Rod, Channel2 Bar, T-Bar, Flat Bar, Blocks, Square, bar, Triangle, Threaded, Hex (A/F), Profiles, Half Ingot, Billet, I/H Bar, etc.
When considering wrought stainless round bars, material shall be furnished in the following way such as Hot-worked, Hot-worked and Annealed, Hot-worked- Annealed and cold worked or Hot-worked-Annealed and heat treated.
Round bars depending upon their treatment and their use and application they can also be available in different surface finishes such as Black, Bright Polished, Rough Turned, NO.4 Finish, Matt Finish, BA Finish, 2B, 2D, etc.
Application
Hastelloy C22 bar is widely used in the chemical field and petrifaction field, such as the element of chloride organic and catalyze system.This material especially suit for high temperature environments, impure inorganic acid and organic acid (such as formic acid and acetic acid), sea-water corrosion environments.
- Nuclear fuel regeneration
- Pesticide manufacture
- Phosphoric acid manufacturePlate heat exchanger
- Selectivity filter system
- Sulfur dioxide cooling tower
- Sulfonating system
- Flue gas scrubber components
- Nuclear fuel reprocessing
- Sour gas production components
- Pesticide production components
