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Alloy 33
  • Alloy 33
  • Alloy 33
  • Alloy 33

Alloy 33

Alloy 33 is a new type of corrosion-resistant austenitic alloy. Due to its extremely high chromium concentration, it has excellent resistance to common corrosion and pitting corrosion in chlorides. The alloy improves the resistance in phosphoric acid, simplifies the passivation in sulfuric acid, and has higher mechanical properties and good ductility.Alloy 33 can be available in bar, Pipe, Forging, Plate, Fasteners, Coil, Wire, Fitting, etc.

Other common names:UNS R20033, W.Nr.1.4591, VDM Alloy 33
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Overview of Alloy 33

Other common names: UNS R20033, W.Nr.1.4591, VDM Alloy 33

Alloy 33 is a new type of corrosion-resistant austenitic alloy. Due to its good balance analysis and extremely high chromium concentration, it has excellent resistance to common corrosion and pitting corrosion in chloride. The addition of molybdenum and copper to the alloy improves the resistance in phosphoric acid and simplifies the passivation in sulfuric acid. The high nitrogen content ensures high mechanical properties and good ductility of the material. In addition, in addition to excellent corrosion resistance to nitric acid and hydrofluoric acid mixtures, the material also has strong corrosion resistance to all alkaline media. It should be noted that the best corrosion resistance can only be ensured when the material is used in a clean, bright metal condition.

Features of Alloy 33

● Excellent resistance to highly oxidizing media (such as concentrated sulfuric acid)

● Good manufacturing processability and weldability

● Has high yield strength and excellent toughness

● Excellent resistance to general corrosion in hot mineral acids, mixed acids, alkalis, sea water and brackish water

● ASME approved for use in pressure vessels in the temperature range of -196°C to 450°C.

● High strength and high ductility even at high temperatures

Forms of Alloy 33

We can provide various forms of VDM Alloy 33 according to your customization, such as follows:

Alloy 33 BarAlloy 33 Sheet&Plate
Alloy 33 Welded Pipe&TubeAlloy 33 Seamless Pipe&Tube
Alloy 33 Pipe FittingsAlloy 33 Fasteners
Alloy 33 ForgingsAlloy 33 Flanges
Alloy 33 CoilAlloy 33 wire

Specification of Alloy 33

Chemical Composition
CSiMnPSCrMoNiNCuFe
0.015Max0.5Max2.0Max0.02Max0.01Max31-350.5-2.030-330.35-0.60.3-1.2Balance
Mechanical Properties
Tensile StrengthYield Strength, min.Elongation, min.
MpaksiMpaksi%
720-920104-13338055.140

Application of Alloy 33

Alloy 33 is widely used in the following industries due to its excellent corrosion resistance:

● Sea water system

● Plate or tube heat exchanger using brackish water or sea water as coolant

● Heat recovery and distribution system in sulfuric acid production

● Pipes, vessels and heat exchangers for sulfuric acid contaminated with chloride

● Nitric acid, hydrofluoric acid storage, transportation equipment and pickling equipment

● Seawater pipes, condensers, coolers, etc. with excellent pitting corrosion resistance

● Production and use of NaOH and KOH

● Salt and alkali evaporation plant

● Chemical pulp bleaching equipment, components for the pulp and paper industry

● Vessels and pipes in a purified terephthalic acid (PTA) plant

Supplier of Alloy 33

Wudenalloy has focused on the production and manufacture of nickel alloys for more than ten years. We are a principal worldwide supplier of corrosion-resistant alloy and other superalloy metals. We have a professional technical team and after-sales service, so we can offer high -quality Hastelloy®, Incoloy®, Inconel®, Monel®, Duplex Stainless Steel and other alloy material. These materials are available in bar, sheet&plate, pipe&tube, flange, forging, and other forms to meet the needs of our customers.

Request a quotenow to get the competitive Alloy 33 prices, you can also send emails to sales@wudenalloy.com, Wudenalloy is your trusted supplier of special alloy material.

Hot Tags: Alloy 33, manufacturers, suppliers, factory, Customized
Chemical Composition
CSiMnPSCrMoNiNCuFe
0.015Max0.5Max2.0Max0.02Max0.01Max31-350.5-2.030-330.35-0.60.3-1.2Balance
Mechanical Properties
Tensile StrengthYield Strength, min.Elongation, min.
MpaksiMpaksi%
720-920104-13338055.140


Related Industry Products
  • Alloy 33 is a new type of corrosion-resistant austenitic alloy. Due to its extremely high chromium concentration, it has excellent resistance to common corrosion and pitting corrosion in chlorides. The alloy improves the resistance in phosphoric acid, simplifies the passivation in sulfuric acid, and has higher mechanical properties and good ductility.Alloy 33 can be available in bar, Pipe, Forging, Plate, Fasteners, Coil, Wire, Fitting, etc.
  • Ni 200/201 is a commercial forged pure nickel that is solid solution strengthened. Its carbon content is extremely low, and it will not be embrittled by intergranular deposits under high temperature conditions. It has good corrosion resistance in a neutral to moderately reducing environment and an oxidizing medium that can generate a passivation oxide film.Nickel 200/201 can be available in bar, Pipe, Forging, Plate, Fasteners, Coil, Wire, Fitting, etc.
  • Alloy 31 is an iron-nickel-chromium-molybdenum alloy with relatively low cost and high corrosion resistance. Nitrogen and copper are added to this alloy element, and its performance is between special alloy austenitic stainless steel and existing nickel-based alloys.Alloy 31 can be available in bar, Pipe, Forging, Plate, Fasteners, Coil, Wire, Fitting, etc.
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  • About Wuden Alloy
  • Wuden Alloy Co., Ltd. provides petroleum, chemical, electric power, aerospace and other related industries with nickel alloy materials,such as Hastelloy, Inconel, Incoloy,Monel alloy seamless pipe, welded pipe, plate, tube,flange, bar, etc.
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