Hastelloy C22 Nickel-Chromium-Molybdenum Alloy

Hastelloy C22  nickel-chromium-molybdenum alloyIntroductionSuper 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 CompositionThe 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 PropertiesThe 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 PropertiesThe mechanical properties of Hastelloy(r) C22(r) are displayed in the following table.

Properties	Metric	Imperial
Elastic modulus	206 MPa	29878 psi

Thermal PropertiesThe 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 DesignationsOther designations that are equivalent to Hastelloy(r) C22(r) include:ASTM B366ASTM B564ASTM B574ASTM B575ASTM B619ASTM B622DIN 2.4602Fabrication and Heat TreatmentMachinabilityHastelloy(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.FormingHastelloy(r) C22(r) can be easily hot or cold formed followed by heat treatment.WeldingExcept submerged arc welding method, Hastelloy(r) C22(r) can be welded using all other welding methods.Heat TreatmentHastelloy(r) C22(r) is heat treated by annealing at 1122°C (2050°F) followed by quenching.ForgingHastelloy(r) C22(r) is hot forged at 1149°C (2100°F) followed by heat treatment.Hot WorkingHastelloy(r) C22(r) has good hot working capacity.Cold WorkingHastelloy(r) C22(r) has cold working capacity.AgingHastelloy(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).HardeningHastelloy(r) C22(r) cannot be hardened by heat treatment or cold working.ApplicationsHastelloy(r) C22(r) is used for manufacturing different types of chemical process equipments such as:Chlorination systemsFlue gas scrubbersOutlet ducting and stack liners for power plants, pulp and paper bleach plants, sulfur dioxide scrubbers, and weld overlay of less corrosion resistant metalsAcid production and pickling systems.Stock

Form	Specification	Supply Form	Others
Sheet	Thickness:0.40-4.75mm,General Width:1000,1219,1500mm	Whole Coil or piece of it	Cold Annealed,Surface 2B,2E
Plate	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
Belt	Thickness:0.10-3.0mm,Width:50-500mm	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
Wire	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
Flangs	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
Tube	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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