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ALLOY-22

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ALLOYC22（Hastelloy C22

Characteristics
Corrosion Resistance
Applications
Chemical Composition
Mechanical properties
International Standard Comparision Chart Stock Form And Sizes
Round Bars
 Hex Bars
Nuts And Washers
Spring Washer
Hex Bolt
Stud Bolt
Flanges
Sourceable Materials

Characteristics

ALLOY22 is a Ni-Cr-Mo alloy containing W and extremely low carbon and Si contents.

  • • outstanding resistance to a wide range of corrosive media, under oxidizing and reducing conditions
  • • excellent resistance to pitting, crevice corrosion, and stress-corrosion cracking.
Density8.69

Stock Form and Sizes

※　◆1000㎜　◎2000㎜　▲3000㎜　■3500㎜　●4000㎜　★2500㎜～3990㎜

Round BarsSpecification: ASTM　B574/B564※　ASME SB574/SB564※　NACE MR0175(ISO 15156)※B564/SB564 Apply to Forged Bar Only
size １〜13
1.2 1.6 2 2.6 3 3.5 4 4.4 5 5.3 6 7.1 8 8.95 10 12 13
◎ ◎ ◎ ◎ ◎   ◎   ◎   ▲   ▲   ▲ ▲ ★
size 16〜50
16 18 19 20 22 24 25 28 30 32 35 36 38 40 42 45 50
★ ★   ★ ★   ★ ★ ★ ★ ★   ★ ★ ★ ★ ★
size 55〜135
55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135
★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★
size 140〜330
140 145 150 155 160 165 170 180 190 200 210 220 230 250 280 300 330
★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★
size 350
350                                
★                                
 
Hex barsSpecification：ASTM B574
10 13 14 17 19 21 22 24 26 27 30 32 36
★ ★   ★ ★     ★     ★    
 

※Please enquire about grades and sizes not in stock.

Nuts and washersSpecification：Nuts JIS B1181 Class1 Washers,JIS B1256 Normal Series Grade.A
M5 M6 M8 M10 M12 M16 M20
● ● ● ● ● ● ●
 

※Please enquire about grades and sizes not in stock.

Hex BoltJIS B1180 Semi-Finished Type
  10 15 20 25 30 35 40 45 50 55
M6 Half Threed       ● ●          
Full Threed ● ● ●              
  60 65 70 75 80 85 90 95 100  
Half Threed                    
Full Threed                    
M8   10 15 20 25 30 35 40 45 50 55
Half Threed ○ ○   ○ ● ○ ○ ○ ○  
Full Threed ○ ○ ● ○ ● ○ ○ ○ ○  
  60 65 70 75 80 85 90 95 100  
Half Threed                    
Full Threed                    
M10   10 15 20 25 30 35 40 45 50 55
Half Threed ○ ○ ○   ● ○ ● ○ ○ ○
Full Threed ○ ○ ○ ● ● ● ● ○ ● ○
  60 65 70 75 80 85 90 95 100  
Half Threed ○ ○ ○ ○ ○ ○ ○ ○ ○  
Full Threed ○ ○ ○ ○ ○ ○ ○ ○ ○  
M12   10 15 20 25 30 35 40 45 50 55
Half Threed ○ ○ ○   ○ ○ ○ ○ ○ ○
Full Threed ○ ○ ○ ● ○ ● ○ ○ ○ ○
  60 65 70 75 80 85 90 95 100  
Half Threed ○ ○ ○ ○ ○          
Full Threed ○ ○ ○ ○ ○          
M16   10 15 20 25 30 35 40 45 50 55
Half Threed ○ ○ ○ ○ ○ ○ ○ ○ ○ ○
Full Threed ○ ○ ○ ○ ○ ○ ○ ○ ● ○
  60 65 70 75 80 85 90 95 100  
Half Threed ○ ○ ○ ○ ○ ○ ○ ○ ○  
Full Threed ○ ○ ○ ○ ○ ○ ○ ○ ○  
 

※●・・・Stock　○・・・Short time production
※Please enquire about grades and sizes not in stock.

Stud Bolt
M6 M8 M10 M12 M16
● ● ● ● ●
 

※Length　1000mm
※Please enquire about grades and sizes not in stock.

Flanges
  20A 25A 40A 50A 65A 80A 100A
JIS10K ● ● ● ● ● ● ●
 

※Please enquire about grades and sizes not in stock.

Sourceable Ex-Stock Material for other Forms from Distributors World-Wide

Equivalent Round Bars Plate Pipe/Tube Welding Rod & Wire
Min Max Min Max
Hastelloy C22 3.18～279.4 0.64～100 ○ △
 

*○: Various sizes available in stock.　△: Only limited sizes available in stock.　☆: Please contact us for more details.
* We can supply materials and products that comply with various standards including ASTM, ASME, AMS, and NACE standards. Please contact us for more details.

Corrosion resistance

“The chemical composition of Alloy 22 has been designed to give it outstanding corrosion resistance in as wide a range of media as possible, both oxidizing and reducing. The high chromiurn content of the alloy makes it particularly suitable for oxidizing conditions, including wet chlorine gas, hypochlorite solutions or oxidizing acids. It is remarkably resistant to localized attack by halide ions, even under severe conditions of low pH and high temperatures. It resists attack in media contaminated by oxidizing chlorides such as ferric chloride or cupric chloride.
Alloy 22 is also resistant to many reducing media. As a result it can be used for equipment in polyvalent chemical plant where widely varying conditions may be encountered. The very low carbon content of Alloy 22, together with its balanced composition, reduce the tendency to formation of grain-boundary precipitates in the heat-affected zone during welding,thus making it suitable in the as-welded condition for many applications in the chemical process industry.”

Applications

The versatile nature of Alloy 22 combined with its excellent mechanical properties mean that it can be used in a wide variety of applications, including:

Applications
  • • organic syntheses
  • • flue gas desulphurization
  • • electrolytic galvanizing
  • • plate heat exchangers
  • • fine chemicals production
  • • incineration plants
  • • pharmaceutical intermediates
  • • combustion-resistant alloy for high pressure oxygen applications

Chemical composition

  Ni Cr Fe C Mn Si Mo W Co V P S
min bal. 20.0 2.0       12.5 2.5        
max 22.5 6.0 0.0010 0.50 0.08 14.5 3.5 2.5 0.35 0.025 0.015
 

※The values in the table are for reference only and do not guarantee minimum or maximum values. For further information, please contact us.

Mechanical properties（Round Bar）

  Condition Yield Strength(Mpa) Tensile Strength(Mpa) Elongation(%) Hardness(HB)
ASTM Min Value Solution Annealed 310 690 45  
Typical Values at RT Solution Annealed 402 794 57 197
 

Above standard values and typical values of Round Bar.
Please contact us with any questions about reference or value of plate and pipe.
※The values in the table are for reference only and do not guarantee minimum or maximum values. For further information, please contact us.

International Standard Comparison Chart

  Material Round Bars Plates/Sheets Pipe/Tube
Seamless Welded
ASTM UNS
N06022		 B574 B575 B622 B619/B626
ASME SB574 SB575 SB622 SB619/SB626
JIS NW6022 H4553 H4551 H4552  
DIN 2.4602 17752 17750 17751 17751
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