Alloy 20 Flanges
| Specification | Details |
|---|---|
| Product Name | Alloy 20 Flanges |
| Material Grade | Alloy 20 / Carpenter 20 / Alloy 20Cb-3 |
| UNS Designation | UNS N08020 |
| Werkstoff Number | W.Nr. 2.4660 |
| Material Type | Nickel-Iron-Chromium Alloy with Molybdenum and Copper |
| Chemical Composition | Nickel, Iron and Chromium as principal elements with Molybdenum, Copper, Niobium and other controlled elements |
| Flange Type | Weld Neck / Slip-On / Blind / Socket Weld / Threaded / Lap Joint / Orifice Flanges |
| Manufacturing Type | Forged / Hot Forged / Precision Machined |
| Flange Standard | ASTM B462 / ASME SB462, as applicable |
| Dimensional Standard | ASME B16.5 / ASME B16.47, as applicable |
| Size | 1/2″ to 24″ or As per Customer Requirement |
| Pressure Class | Class 150 / 300 / 600 / 900 / 1500 / 2500, as applicable |
| Connection Type | Flanged Connection |
| Facing Type | Raised Face / Flat Face / Ring Type Joint, as applicable |
| Bore Type | Standard Bore / Heavy Bore / Customized Bore |
| Surface Finish | Machined / Polished / As Specified |
| Heat Treatment | Solution Annealed / Stabilized / As per Applicable Material Specification |
| Dimensions | As per ASME B16.5 / ASME B16.47 and Customer Requirements |
| MTC | EN 10204 3.1 / 3.2 |
| Testing | Chemical / Mechanical / Dimensional / Hardness / Visual / PMI and Other Tests as Required |
| Tensile Strength | As per Applicable Alloy 20 Material Specification and Condition |
| Yield Strength | As per Applicable Alloy 20 Material Specification and Condition |
| Elongation | As per Applicable Material Standard |
| Density | Approximately 8.08 g/cm³ |
| Melting Range | Approximately 1385–1443°C |
| Corrosion Resistance | Excellent resistance to general corrosion in many aggressive chemical environments |
| Pitting Resistance | Excellent resistance to pitting and localized corrosion |
| Crevice Corrosion Resistance | Good to excellent resistance under suitable service conditions |
| Chloride Resistance | Good resistance to chloride-containing environments |
| Stress-Corrosion Resistance | Excellent resistance to chloride-induced stress-corrosion cracking |
| Acid Resistance | Excellent resistance to sulfuric acid and good resistance to selected phosphoric and other acids |
| Intergranular Corrosion Resistance | Excellent resistance due to stabilized composition |
| Oxidation Resistance | Good resistance to oxidation under suitable service conditions |
| High-Temperature Performance | Suitable for selected elevated-temperature applications within recommended service limits |
| Welding | Good weldability using appropriate procedures |
| Fabrication | Suitable for machining and specialized fabrication using appropriate procedures |
| Dimensional Accuracy | Precision dimensions according to applicable ASME standards |
| Available Forms | Weld Neck / Slip-On / Blind / Socket Weld / Threaded / Lap Joint / Orifice Flanges |
| Customization | Size, Flange Type, Pressure Class, Facing, Bore, Dimensions, Finish, Testing and Documentation |
| Inspection | Dimensional, Visual and Material Inspection as Required |
| Marking | Size, Grade, Standard, Class, Facing and Heat/Batch Identification as Applicable |
| Origin | European / American / Japanese / Korean and Other Approved Origins |
| Export Supply | Worldwide Alloy 20 Flanges Export Supply |
| Exporter Support | Technical Specifications, Inspection, Certification, Export Packing, Documentation and International Shipment Coordination |
| Applications | Chemical Processing, Sulfuric Acid Handling, Phosphoric Acid Processing, Pharmaceutical, Food Processing, Petrochemical, Heat Exchangers, Pollution Control and Corrosive Process Piping |
1. Most Common Types of Alloy 20 Flanges
| Type | Details |
|---|---|
| Alloy 20 Weld Neck Flanges | Designed for strong welded connections in chemical processing and corrosive service piping systems. |
| Alloy 20 Slip-On Flanges | Fits over the pipe and is welded in position for suitable industrial piping applications. |
| Alloy 20 Blind Flanges | Used to close pipe ends, equipment nozzles, vessels and other openings. |
| Alloy 20 Socket Weld Flanges | Suitable for smaller-diameter piping systems requiring a compact socket weld connection. |
| Alloy 20 Threaded Flanges | Provides a threaded connection where welding may not be preferred, subject to application requirements. |
| Alloy 20 Lap Joint Flanges | Used with a compatible stub end where frequent assembly and disassembly may be required. |
| Alloy 20 Orifice Flanges | Used in flow measurement systems requiring an orifice plate arrangement. |
| Alloy 20 Ring Type Joint Flanges | Features an RTJ facing for applications requiring reliable sealing. |
| Alloy 20 Raised Face Flanges | Provides a raised sealing surface for suitable gasketed piping and equipment connections. |
| Alloy 20 Flat Face Flanges | Features a flat sealing surface for applications requiring this facing configuration. |
| Customized Alloy 20 Flanges | Manufactured according to customer drawings, dimensions, pressure class, facing, bore, testing and documentation requirements. |
2. Alloy 20 Flanges – Technical Specifications
| Specification | Details |
|---|---|
| Product Name | Alloy 20 Flanges |
| Material Grade | Alloy 20 / Carpenter 20 / Alloy 20Cb-3 |
| UNS Designation | UNS N08020 |
| Werkstoff Number | W.Nr. 2.4660 |
| Material Type | Nickel-Iron-Chromium Alloy with Molybdenum and Copper |
| Chemical Composition | Nickel, Iron and Chromium as principal elements with controlled Molybdenum, Copper, Niobium and other elements |
| Flange Type | Weld Neck / Slip-On / Blind / Socket Weld / Threaded / Lap Joint / Orifice Flanges |
| Manufacturing Type | Forged / Hot Forged / Precision Machined |
| Flange Standard | ASTM B462 / ASME SB462, as applicable |
| Dimensional Standard | ASME B16.5 / ASME B16.47, as applicable |
| Size | 1/2″ to 24″ or As per Customer Requirement |
| Pressure Class | Class 150 / 300 / 600 / 900 / 1500 / 2500, as applicable |
| Connection Type | Flanged Connection |
| Facing Type | Raised Face / Flat Face / Ring Type Joint, as applicable |
| Bore Type | Standard Bore / Heavy Bore / Customized Bore |
| Surface Finish | Machined / Polished / As Specified |
| Heat Treatment | Solution Annealed / Stabilized / As per Applicable Material Specification |
| Dimensions | As per ASME B16.5 / ASME B16.47 and Customer Requirements |
| MTC | EN 10204 3.1 / 3.2 |
| Testing | Chemical / Mechanical / Dimensional / Hardness / Visual / PMI and Other Tests as Required |
| Tensile Strength | As per Applicable Alloy 20 Material Specification and Condition |
| Yield Strength | As per Applicable Alloy 20 Material Specification and Condition |
| Elongation | As per Applicable Material Standard |
| Density | Approximately 8.08 g/cm³ |
| Melting Range | Approximately 1385–1443°C |
| Corrosion Resistance | Excellent resistance to general corrosion in many aggressive chemical environments |
| Pitting Resistance | Excellent resistance to pitting and localized corrosion |
| Crevice Corrosion Resistance | Good to excellent resistance under suitable service conditions |
| Chloride Resistance | Good resistance to chloride-containing environments |
| Stress-Corrosion Resistance | Excellent resistance to chloride-induced stress-corrosion cracking |
| Acid Resistance | Excellent resistance to sulfuric acid and good resistance to selected phosphoric and other acids |
| Intergranular Corrosion Resistance | Excellent resistance to intergranular corrosion |
| Oxidation Resistance | Good resistance to oxidation under suitable service conditions |
| High-Temperature Performance | Suitable for selected elevated-temperature applications within recommended service limits |
| Welding | Good weldability using appropriate welding procedures |
| Fabrication | Suitable for machining and specialized fabrication using appropriate procedures |
| Dimensional Accuracy | Precision dimensions according to applicable ASME standards |
| Available Forms | Weld Neck / Slip-On / Blind / Socket Weld / Threaded / Lap Joint / Orifice Flanges |
| Customization | Size, Flange Type, Pressure Class, Facing, Bore, Dimensions, Finish, Testing and Documentation |
| Inspection | Dimensional, Visual and Material Inspection as Required |
| Marking | Size, Grade, Standard, Class, Facing and Heat/Batch Identification as Applicable |
| Origin | European / American / Japanese / Korean and Other Approved Origins |
| Export Supply | Worldwide Alloy 20 Flanges Export Supply |
| Exporter Support | Technical Specifications, Inspection, Certification, Export Packing, Documentation and International Shipment Coordination |
| Applications | Chemical Processing, Sulfuric Acid Handling, Phosphoric Acid Processing, Pharmaceutical, Food Processing, Petrochemical, Heat Exchangers, Pollution Control and Corrosive Process Piping |
3. Alloy 20 Flanges – Supply & Quality Details
| Parameter | Details |
|---|---|
| Material Identification | Alloy 20 / Carpenter 20 / Alloy 20Cb-3 / UNS N08020 / W.Nr. 2.4660 |
| Flange Configurations | Weld Neck / Slip-On / Blind / Socket Weld / Threaded / Lap Joint / Orifice |
| Size Range | 1/2″ to 24″ or As per Requirement |
| Pressure Classes | Class 150 / 300 / 600 / 900 / 1500 / 2500 |
| Manufacturing | Forged / Hot Forged / Precision Machined |
| Applicable Standards | ASTM B462 / ASME SB462 and ASME B16.5 / B16.47, as applicable |
| Facing Options | Raised Face / Flat Face / Ring Type Joint |
| Bore Options | Standard Bore / Heavy Bore / Customized Bore |
| Surface Finish | Machined / Polished / As Specified |
| Heat Treatment | Solution Annealed / Stabilized / As Required |
| Testing | Chemical / Mechanical / Dimensional / Hardness / Visual / PMI / Other Tests |
| Inspection | Dimensional, Visual and Material Inspection |
| Certification | EN 10204 3.1 / 3.2 |
| Marking | Size, Grade, Standard, Class, Facing and Heat/Batch Identification |
| Material Traceability | Heat Number and Batch Identification as Applicable |
| Customization | Size, Flange Type, Pressure Class, Facing, Bore, Dimensions, Finish, Testing and Documentation |
| Packaging | Export-Worthy Wooden Cases, Boxes, Pallets or Customized Packaging |
| Documentation | MTC, Inspection Reports, Test Certificates and Other Documents as Required |
| Export Supply | Worldwide Alloy 20 Flanges Supply |
| Applications | Chemical Processing, Sulfuric Acid Handling, Phosphoric Acid Processing, Pharmaceutical, Food Processing, Petrochemical, Heat Exchangers and Corrosive Process Piping |
Most Common Types Of Alloy 20 Flanges
| Type | Details |
|---|---|
| Alloy 20 Weld Neck Flanges | Designed for strong welded connections and commonly selected for high-pressure and corrosive chemical processing piping systems. |
| Alloy 20 Slip-On Flanges | Fits over the pipe and is welded in position, providing a practical flange connection for suitable industrial piping applications. |
| Alloy 20 Blind Flanges | Used to close pipe ends, equipment nozzles, vessels and other openings in chemical and process systems. |
| Alloy 20 Socket Weld Flanges | Suitable for smaller-bore piping systems where a compact socket-weld connection is required. |
| Alloy 20 Threaded Flanges | Provides a threaded connection for applications where welding is not preferred and the piping arrangement permits threaded installation. |
| Alloy 20 Lap Joint Flanges | Used with a compatible stub end and suitable for piping systems where frequent dismantling or alignment flexibility is required. |
| Alloy 20 Orifice Flanges | Used in flow measurement systems requiring an orifice plate arrangement for process-fluid measurement. |
| Alloy 20 Ring Type Joint Flanges | Features an RTJ facing and is selected for applications requiring a suitable high-integrity gasketed connection. |
| Alloy 20 Raised Face Flanges | Provides a raised sealing surface for suitable gasketed pipe and equipment connections. |
| Alloy 20 Flat Face Flanges | Features a flat sealing surface for applications requiring this particular flange-facing configuration. |
| Customized Alloy 20 Flanges | Manufactured according to customer drawings, required dimensions, pressure class, facing, bore, drilling pattern, testing and documentation requirements. |
Why Should You Buy Alloy 20 Flanges from Metalx Nickel & Alloys?
- Experienced Alloy 20 Flanges Supplier & Exporter serving international buyers, importers, distributors, EPC contractors, stockholders, traders and industrial end users.
- 20+ Years of Nickel Alloy Industry Experience in supplying and exporting corrosion-resistant, high-performance and specialty alloy products to customers across the UAE, Saudi Arabia, Qatar, Oman, Kuwait, Bahrain, Africa, Europe, Asia and other global markets.
- Specialized Alloy 20 Flanges Exporter offering Alloy 20 / Carpenter 20 / Alloy 20Cb-3 / UNS N08020 / W.Nr. 2.4660 Flanges according to applicable international standards and customer requirements.
- Global Alloy 20 Sourcing Network with access to reputed nickel alloy mills, manufacturers, authorized suppliers and approved stockholders across the USA, Europe, Japan, South Korea and other major international supply markets.
- Reliable Alloy 20 Flanges Supplier providing nickel-iron-chromium alloy flanges for demanding applications requiring excellent resistance to sulfuric acid, phosphoric acid and other aggressive chemical environments, strong pitting and crevice corrosion resistance, good chloride resistance and excellent stress-corrosion cracking resistance.
| Key Feature | Details |
|---|---|
| Excellent Sulfuric Acid Resistance | Provides excellent resistance to sulfuric acid and many aggressive chemical environments. |
| Strong Corrosion Resistance | Offers good resistance to general corrosion in demanding industrial service conditions. |
| Pitting Resistance | Molybdenum content improves resistance to pitting and localized corrosion. |
| Crevice Corrosion Resistance | Provides good resistance to crevice corrosion under suitable operating conditions. |
| Intergranular Corrosion Resistance | Niobium stabilization helps improve resistance to certain forms of intergranular corrosion after welding. |
| Good Mechanical Strength | Provides useful mechanical strength and structural stability for industrial piping connections. |
| Chemical Processing Suitability | Suitable for aggressive chemical processing, acid-handling and corrosive process applications. |
| Multiple Flange Types | Available in Weld Neck, Slip-On, Blind, Socket Weld, Threaded, Lap Joint and Orifice configurations. |
| Multiple Pressure Classes | Available in Class 150, 300, 600, 900, 1500 and 2500, subject to applicable standards. |
| Multiple Facing Options | RF, FF and RTJ facing options can be supplied according to application requirements. |
| Custom Manufacturing | Size, bore, drilling pattern, pressure class, facing, dimensions and finish can be customized. |
| Accurate Machining | Flange faces, bolt holes, bores and critical dimensions can be machined according to applicable standards. |
| Inspection & Documentation | Material certificates, inspection reports, PMI and other testing documentation can be provided as required. |
| Export Quality Supply | Suitable material identification, export packing and documentation can be provided for domestic and international projects. |
| Specification | Details |
|---|---|
| Product Name | Alloy 20 Flanges |
| Material Grade | Alloy 20 / Carpenter 20 |
| UNS Number | UNS N08020 |
| EN Material Number | W.Nr. 2.4660 |
| Alloy Type | Nickel-Iron-Chromium Alloy |
| Chemical Composition | Nickel, Iron and Chromium with Molybdenum, Copper, Niobium and other controlled elements |
| Standard | ASME, ANSI, DIN, EN, BS, JIS and equivalent standards |
| Dimensional Standard | ASME B16.5, ASME B16.47 and other applicable standards |
| Pressure Class | Class 150 / 300 / 600 / 900 / 1500 / 2500 and Customized |
| Flange Types | Weld Neck / Slip-On / Blind / Socket Weld / Threaded / Lap Joint / Orifice |
| Facing | RF / FF / RTJ and Customized |
| Size Range | As per Standard or Customer Requirement |
| Manufacturing | Forged / Machined as Applicable |
| Condition | As per Applicable Specification and Customer Requirement |
| Bore Type | Standard Bore / Heavy Bore / Customized Bore |
| Surface Finish | Machined / Smooth / As Specified |
| Marking | Size, Grade, Pressure Class, Standard, Heat Number and Other Required Details |
| Testing | Dimensional, Visual, Chemical, Mechanical, PMI and Other Tests as Required |
| Inspection | Dimensional, Visual and Material Inspection as Required |
| MTC | EN 10204 3.1 / 3.2 |
| Heat Treatment | Solution Annealed / Stabilized / As per Applicable Specification |
| Customization | Size, Flange Type, Pressure Class, Facing, Bore, Dimensions, Finish, Testing and Documentation |
| Export Supply | Worldwide Alloy 20 Flanges Export Supply |
| Applications | Chemical Processing, Sulfuric Acid Handling, Phosphoric Acid Processing, Pharmaceutical, Food Processing, Petrochemical, Heat Exchangers, Pollution Control and Corrosive Process Piping |
1. What are Alloy 20 Flanges?
Alloy 20 Flanges are corrosion-resistant nickel-iron-chromium alloy flanges used to connect pipes, valves, pumps, vessels and other process equipment, particularly in demanding chemical and acid-handling environments.
2. What is the UNS number of Alloy 20?
The UNS designation of Alloy 20 is UNS N08020, and its EN material number is W.Nr. 2.4660.
3. What types of Alloy 20 Flanges are available?
Common types include Weld Neck, Slip-On, Blind, Socket Weld, Threaded, Lap Joint and Orifice Flanges . Customized flange configurations can also be supplied according to project requirements.
4. What standards are used for Alloy 20 Flanges?
Alloy 20 Flanges can be manufactured according to applicable material and dimensional standards, including ASTM B462, ASME SB462, ASME B16.5 and ASME B16.47 , where applicable.
5. What are the key advantages of Alloy 20 Flanges?
They offer excellent resistance to sulfuric acid, good general corrosion resistance, strong pitting resistance, useful crevice corrosion resistance and good resistance to chloride-induced stress corrosion cracking .
6. Where are Alloy 20 Flanges used?
Alloy 20 Flanges are commonly used in chemical processing, sulfuric acid handling, phosphoric acid processing, pharmaceutical plants, food processing, petrochemical equipment, heat exchangers, pollution control systems and corrosive process piping .