ALLOY-C22

Hastelloy C-22

  • UNS Number N06022
  • Other common names: Alloy C22
  • W.Nr. 2.4602
  • UNS N08020
  • ASME SB574, SB564, SB575, SB619, SB626, SB622
  • ASTM B574, B564, B575, B619, B626, B622

Increasing Corrosion Resistance to Never-Before-Seen Levels

The revolutionary alloy ALLOY-C22 from Taashvi Special Alloys raises the bar for corrosion resistance in the field of materials engineering. This cutting-edge alloy is proof of Taashvi's dedication to quality and invention; it is renowned for its outstanding performance in challenging conditions.

Among the many important qualities that differentiate ALLOY-C22 in the market are the following:

01 Superior Corrosion Resistance: A broad variety of corrosive media, including oxidizing and reducing conditions, are exceptionally resistant to alloy C22.

02 High Temperature Stability: The alloy is appropriate for demanding applications because it maintains its structural integrity and performance at high temperatures.

03 Adaptability: Due to its extreme versatility, ALLOY-C22 is used in a wide range of industries, including medicine, pollution control, and chemical processing.

04 Exceptional Weldability: Because of the alloy's excellent weldability, fabrication is made easier, and production processes are made more efficient.

05 Durability: Due in part to its strong composition, ALLOY-C22 has a longer service life and requires less maintenance.

06 Wide Range of Forms: Taashvi Special Alloys provides flexibility for a range of applications, including pipes, tubes, sheets, and plates. Taashvi Special Alloys offers ALLOY-C22 in multiple forms.

In what forms is Alloy C22 Available at Taashvi Special Alloys?

  • Sheet
  • Plate
  • Bar
  • Pipe & Tube (welded & seamless)
  • Flanges
  • Fittings
  • Forging
  • Fasteners
  • Elbows, tees, stub-ends, returns, caps, crosses, reducers, pipe nipples, etc.
  • Welding Wire (AWS Classifications: ER320LR and E320LR-16)

What are the characteristics of Alloy C22?

  • Resistant to pitting, crevice corrosion and stress corrosion cracking
  • Outstanding resistance to both reducing and oxidizing media
  • Excellent resistance to oxidizing aqueous media
  • Exceptional resistance to a wide variety of chemical process environments including strong oxidizers such as ferric acids, acetic anhydride, and seawater and brine solutions
  • Resists the formation of grain-boundary precipitates in the weld heat-affected zone
  • Excellent weldability

Chemical Composition, %

C Cr Co Fe Mn Mo Ni P Si S W V
.010 max 20-22.5 2.5 max 2.0-6.0 .50 max 12.5-14.5 Balance .02 max .08 max .02 max 2.5-3. .35 max

In what applications is Alloy C22 used?

  • Pharmaceutical industries use alloy C-22 fittings and tubing to avoid contamination caused by corrosion related failures
  • Cellophane manufacturing
  • Chlorination systems
  • Pesticide production
  • Incineration scrubber systems
  • Chemical process industry in equipment like flue gas scrubbers, chlorination systems, sulfur dioxide scrubbers, pulp and paper bleach plants, pickling systems, and nuclear fuel reprocessing
  • Waste water processing

ASTM Specifications

Pipe Smls Pipe Welded Tube Smls Tube Welded Sheet/Plate Bar Forging Fitting
B622 B619 B622 B626 B575 B574 B564 B366

Mechanical Properties

Typical Room Temperature Tensile Properties of Annealed Material

Product Form Tensile (ksi) .2% Yield (ksi) Elongation % Hardness (HRb)
Plate (.25”-1.75”) 112 53 62 89
Sheet (.038”-.15”) 122 63 54 93
Bar (.50”-5.50”) 115 55 60 89

Coil / Sheet /Plate Specification

Dimensions : ASTM, ASME, AISI, DIN, BIS

Thickness : 0.50mm - 100mm

Size : 1000 mm x 2000mm, 1220mm x 2440mm, 4' x 8', 1250mm x 2500mm, 1500mm x 3000mm to 6000mm, 2000mm x 4000mm to 6000mm

Finish : Hot rolled plate (HR), Cold rolled sheet (CR), 2B, 2D, BA NO(8), SATIN (Met with Plastic Coated)

Form : Shim Sheet, Perforated Sheet, Profile Cut,


Seamless & Welded Pipes & Tubes Specification

Specification : ASTM, ASME, DIN, NFA, JIS.

Thickness : 4.0mm - 100mm.

Pipe Size : 1/8” NB to 24” NB, 1/4” OD to 24” OD sizes.

Tube Size : 1/2" OD to 8" OD.

Length : Cut length, Fix length, Single Random, Double Random & Required Length.

Form : Round Pipes/Tubes, Square Pipes/Tubes, Rectangular Pipe/Tubes, Coiled Tubes, “U” Shape, Pancake Coils, Hydraulic Tubes.

End : Plain End, Beveled End, Threaded End.

Type : Seamless & Welded Pipes & Tubes.


Round Bar Specification

Dimensions : ASTM, ASME,AISI, API.

Size : 5 mm to 500 mm

Length : from 2.00mm to 6.35mm (0.078" to 0.25") dia.

Finish : Bright, Black, Polish, Forged

Form : Round Bar, Square, Hexagon

Condition : Cold Drawn & Polished Cold Drawn, Centerless Ground Bars & Polished

Other Services : Machining (CNC), Centerless Grinding (CG), Heat Treatment, Annealing, Pickling, Polish, Rolling, Forging, Cutting, Bending, Minor Fabrication


Seamless & Welded Pipes & Tubes Fittings Specification

Specification : ASTM, ASME, DIN, NFA, JIS.

Size : 1/8” NB to 24” NB, 1/4” OD to 24” OD sizes.

Form : Elbow, Tee, Reducer, Stub End, End Cap, Pipe Nipple, Weldolet,

End : Beveled End, Threaded. Plain End,

Type : Seamless & Welded Pipe & Tubes Fittings, Buttweld Fittings & Dairy Fittings.

ALLOY-C22
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