Hastelloy C22 Flat
Hastelloy C22 flat 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 flat possess 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 |
Hardness, MAX |
|---|---|---|---|---|
|
[MPA] |
[MPA] |
(% in 50mm) min |
HRB |
|
|
Alloy C-22 |
690 |
310 |
40 |
100 |
Alloy C-22 flat 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 |
Application
Hastelloy C22 flat is widely used in the chemical field and petrifaction field, such as the element of chloride organic and catalyze system. This material is especially suitable 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 manufacture
- Flat 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
Shalco Industries is a manufacturing company of Flat in India and Global Supplier.
