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Hastelloy C22 2.4602 Nickel Alloy Characteristic as below:
Hastelloy C22 2.4602 Nickel Alloy is a omnipotent of nickel, chromium and molybdenum mixed alloy, with better corrosion resistance performance than other alloys, for example, Hastelloy C276 alloy,C4 alloy and 625 alloy. Hastelloy C22 have a good resistance performance to pitting, crevice corrosion and stress corrosion cracking, have excellent inoxidability water medium performance, including the wet-chlorine, nitric acid or oxidizing acid mixed acid with chloride ion. Meantime, Hastelloy C22 possesses perfect resistance to reduction and oxidation of processing enviroments, then it can be used in some complicated environment or with many different manufacture target factory depend on the omnipotent performance.

Hastelloy C22 2.4602 Nickel Alloy possess prominent resistance performance to different chemical environments, including strong oxidizing matter, such as iron chloride, copper chloride, chlorine, heat pollution liquid(organic and inorganic), formic acid, acetic acid, acetyl oxide, seawater and salting liquid and so on. Hastelloy C22 alloy can resist the grain boundary precipitate form when jointing heat affected zone, this performance made it can applied in many kinds of chemical processing.

Hastelloy C-22 2.4602 Nickel Alloy Metallurgical structure
Hastelloy C22 2.4602 Nickel Alloy is face-centered cubic lattice structure.

Hastelloy C-22 2.4602 Nickel Alloy Corrosion resistance
Hastelloy C22 alloy suit for many kinds of chemical process industry which contain the oxidizing medium and reductant. High molybdenum and chromium content make it can resist the chloride corrosion, and tungsten makethis corrosion resistance better.Hastelloy C22 is one of a few material that can resist the corrosion of moist chlorine, hypochlorite and chlorine dioxide, this alloy have prominent corrosion resistance to high concentration chlorate( iron chloride and copper chloride).

Hastelloy C22 2.4602 Nickel Alloy Specifications
Hastelloy C-22 is covered by ASME . Plate, sheet, strip, bar, tubing, and pipe are covered by ASME specifications SB-574, SB-575, SB-619, SB-622 and SB-626 and by ASTM specifications B-574, B-575, B-619, B-622 and B-626. The UNS number is NO6022.


Hastelloy C-22 2.4602 Nickel Alloy Application field:
Hastelloy C22 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.

Hastelloy C-22 2.4602 Nickel Alloy Other application field:
1.Acetic acid/acetyl oxide
2.Acid dipping 
3.Cellophane paper manufacture
4.Chloride system
5. Complicated mixed acid 6.Electrogalvanizing groove roller
7.Expansion bellows
8.Flue gas washer system
9.Geothermal well
10.Fluorine hydride furnace cleaner
11.Incineration cleaner system 12.Nuclear fuel regeneration 13.Pesticide manufacture 
14.Phosphoric acid manufacture 
15.Acid cleaning system 
16.Plate heat exchanger 17.Selectivity filter system 
18.Sulfur dioxide cooling tower 19.Sulfonating system
20.Tubing heat exchanger 21.Resurfacing welding valve

Austenitic stainless steel are made using up to 80% scrap iron. Not only is stainless steel an alloy of iron, but depending on the fabrication process, it can be loaded with tramp elements and inclusions detrimental to finishing requirements and corrosion resistance. Austenitic stainless steel have been the workhorse of the sanitary food and pharmaceutical industry for years. However, for reasons mentioned above, processors are beginning to use more corrosion resistant alloys to achieve the required life-cycles for their systems. One such material is Hastelloy® C-22®.

C-22 alloy is one of the most versatile nickel-chromium-molybdenum-tungsten alloys available today. This alloy demonstrates improved corrosion resistance to both uniform and localized corrosion and will exceed the performance of C-276, C-4 and alloy 625 in a variety of corrosive environments.


Hastelloy C-22 Chemical composition:
Alloy

%

Ni

Cr

Mo

Fe

W

Co

C

Mn

Si

V

P

S

C

Min.

balance

14.5

15

4

3

 

 

 

 

 

 

 

Max.

16.5

17

7

4.5

2.5

0.08

1

1

0.35

0.04

0.03

C22

Min.

balance

20.0

12.5

2

2.5

 

 

 

 

 

 

 

Max.

22.5

14.5

6

3.5

2.5

0.015

0.5

0.08

0.35

0.02

0.02


Hastelloy C-22 Physical properties
Density

8.9 g/cm³

Melting point

1325-1370 ℃


Hastelloy C-22 Alloy m inimum mechanical properties in the roomtemperature
Alloy state

Tensile strength 
Rm N/mm²

Yield strength
R P 0.2 N/mm²

Elongation
A 5 %

Hastelloy C22

690

283

40



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