Super alloys contain a number of elements in a variety of combinations to achieve the desired result. They have good creep and oxidation resistance. They are available in different shapes, and can be used at very high temperatures and mechanical stress, and also where high surface stability is required. Cobalt-based, nickel-based, and iron-based alloys are three types of super alloys. All of these can be used at temperatures above 540°C (1000°F).

Hastelloy(r) C22(r) is a nickel-chromium-molybdenum alloy. It has high resistance corrosion and metallurgical stability. It is not sensitized during heating or welding. The following datasheet gives more details about Hastelloy(r) C22(r).

Chemical Composition

The following table shows the chemical composition of Hastelloy(r) C22(r).

Element Content (%)
Chromium, Cr 20-22.5
Molybdenum, Mo 12.5-14.5
Tungsten, W 2.5-3.5
Cobalt, Co 2.5 min
Iron, Fe 2-6
Manganese. Mn 0.5 max
Vanadium, V 0.35 min
Silicon, Si 0.08 max
Phosphorus, P 0.02 max
Sulfur, S 0.02 max
Carbon, C 0.015 max
Nickel, Ni Remainder

Physical Properties

The physical properties of Hastelloy(r) C22(r) are outlined in the following table.

Properties Metric Imperial
Density 8.69 g/cm³ 0.314 lb/in³
Melting point 1399°C 2550°F

Mechanical Properties

The mechanical properties of Hastelloy(r) C22(r) are displayed in the following table.

Properties Metric Imperial
Elastic modulus 206 MPa 29878 psi

Thermal Properties

The thermal properties of Hastelloy(r)C22(r) are given in the following table.

Properties Metric Imperial
Thermal conductivity (at 100°C/212°F) 11.1 W/mK 6.4 BTU in/hr.ft².°F

Other Designations

Other designations that are equivalent to Hastelloy(r) C22(r) include:

  • ASTM B366
  • ASTM B564
  • ASTM B574
  • ASTM B575
  • ASTM B619
  • ASTM B622
  • DIN 2.4602

Fabrication and Heat Treatment


Hastelloy(r) C22(r) can be machined using high-speed steel tooling. Carbide tools are used for milling or turning. Machining operations can be performed using conventional coolants.


Hastelloy(r) C22(r) can be easily hot or cold formed followed by heat treatment.


Except submerged arc welding method, Hastelloy(r) C22(r) can be welded using all other welding methods.

Heat Treatment

Hastelloy(r) C22(r) is heat treated by annealing at 1122°C (2050°F) followed by quenching.


Hastelloy(r) C22(r) is hot forged at 1149°C (2100°F) followed by heat treatment.

Hot Working

Hastelloy(r) C22(r) has good hot working capacity.

Cold Working

Hastelloy(r) C22(r) has cold working capacity.


Hastelloy(r) C22(r) is aged at 510 to 1038°C (950 to 1900°F) to increase its tensile strength and hardness. However, V-notch impact strength can be degraded if aging is done above 760°C (1400°F).


Hastelloy(r) C22(r) cannot be hardened by heat treatment or cold working.


Hastelloy(r) C22(r) is used for manufacturing different types of chemical process equipments such as:

  • Chlorination systems
  • Flue gas scrubbers
  • Outlet ducting and stack liners for power plants, pulp and paper bleach plants, sulfur dioxide scrubbers, and weld overlay of less corrosion resistant metals
  • Acid production and pickling systems.




Supply Form



Thickness?0.40-4.75mm?General Width?1000?1219?1500mm

Whole Coil or piece of it

Cold Annealed?Surface 2B?2E


Thickness?4.76-60mm?Width?1500?2000?2500mm?Length?3000?6000?8000?8500mm?Under 10mm plate can be coiled?

Whole Coil or piece of it

Single hot rolling?Solid solution annealed state?Surface 1D



Whole Coil or Specified size

Cold Annealed?Surface 2B?2E

Bar & Rod

Rolled barΦ5-45mm?Length≤1500mm

Polished Bar?circle?Square?

Solution annealing,descaling

Forged barΦ26-245mm?Length≤4000mm

Weld tube

Outer diameterΦ4.76-135mm?Wall Thickness0.25-4.00mm?Length?≤35000 mm

Base on your requirement

Use for PHE

Seamless Tube

Outer diameterΦ3-114mm?Wall Thickness0.2-4.5mm

Base on your requirement

Use for PHE


Outer diameterΦ0.1-13mm

Base on your requirement

Ni & Ni alloy, Ti & Ti alloy

Forged piece

roundness and square alloy

Base on your requirement

Steel, Alloy


All kinds of Flangs

Base on your requirement

Steel, Alloy

Welding Material

Coil wire Φ0.90mm/1.2mm/1.6mm

Base on your requirement

Certificate of Origin?America, Sweden, Britain, Germany, Austria, Italy, France.

Straight WireΦ1.2mm/1.6mm/2.4mm/3.2mm/4.0mm

Welding rodΦ2.4mm/3.2mm/4.0mm


Elbow, three links, four links, different diameter size

Base on your requirement

Ni & Ni alloy, Ti & Ti alloy

Explosive bonded laminate

Raw Sheet Thickness≥2mm

Base on your requirement

Ni & Ni alloy, Ti & Ti alloy

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