Alloy C22, UNS N06022

Alloy 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


Alloy C-22 Physical properties

Density

8.9 g/cm³

Melting point

1325-1370 ℃


Alloy 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

 

Characteristic as below :
Alloy C22 is a omnipotent of nickel, chromium and molybdenum mixed alloy, with better corrosion resistance performance than other alloys, for example, Alloy C276 alloy, C4 alloy and 625 alloy. Alloy 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, Alloy 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. alloy C22 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, sea water and salting liquid and so on. Alloy 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.

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

Alloy C-22 Corrosion resistance
Alloy 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 resistancebetter.Alloy C22 is one of a few material that can resist thecorrosion of moist chlorine, hypochlorite and chlorine dioxide, this alloyhave prominent corrosion resistanceto high concentration chlorate( iron chloride and copper chloride).

 
Alloy C-22 Application field:
Alloy 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.
 
Alloy C-22 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

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