Alloy 20 Stainless Steel Valves
Alloy 20 Stainless Steel Valves Manufacturers India. Best Price Exporter, Stockists & Supplier of Customize Valves for US, UK & Gulf.
Alloy 20 stainless steel valves by Falcon are highly regarded in industries that demand exceptional corrosion resistance and durability. Made from a nickel-iron-chromium alloy, these valves are specifically designed to withstand aggressive environments, including those containing sulfuric acid, phosphoric acid, and chloride solutions. Their unique composition makes them a preferred choice for chemical processing, pharmaceutical, and food production industries. In this article, we’ll explore the properties, applications, and benefits of Alloy 20 stainless steel valves, along with tips for selecting and maintaining them.
2. Properties and Composition of Alloy 20
Alloy 20, also known as Carpenter 20, is a super austenitic stainless steel alloy with the following composition:
- Nickel (Ni): 32-38%
- Chromium (Cr): 19-21%
- Iron (Fe): Balance
- Molybdenum (Mo): 2-3%
- Copper (Cu): 3-4%
- Manganese (Mn): 2% max
- Silicon (Si): 1% max
This unique blend of elements provides Alloy 20 with outstanding resistance to corrosion, particularly in acidic and chloride-rich environments. Additionally, it offers excellent mechanical properties, including high tensile strength and good weldability.
3. Applications of Alloy 20 Stainless Steel Valves
Alloy 20 stainless steel valves are widely used in industries where corrosion resistance and reliability are critical. Some common applications include:
- Chemical Processing: Handling sulfuric acid, phosphoric acid, and other corrosive chemicals.
- Pharmaceuticals: Ensuring purity and resistance to aggressive cleaning agents.
- Food and Beverage: Meeting hygiene standards and resisting acidic food products.
- Oil and Gas: Withstanding harsh offshore and onshore environments.
- Water Treatment: Resisting chloride-induced corrosion in desalination plants.
4. Advantages of Using Alloy 20 Stainless Steel Valves
Corrosion Resistance
Alloy 20 is specifically designed to resist corrosion in highly acidic and chloride-rich environments. This makes it ideal for industries dealing with sulfuric acid, hydrochloric acid, and other aggressive chemicals.
High Strength and Durability
The alloy’s robust composition ensures high tensile strength and durability, even under extreme temperatures and pressures.
Versatility in Harsh Environments
Alloy 20 valves perform exceptionally well in environments where other materials, such as standard stainless steel, would fail. Their versatility makes them suitable for a wide range of industrial applications.
5. Types of Alloy 20 Stainless Steel Valves
Ball Valves
Alloy 20 ball valves are known for their tight sealing and low torque operation. They are ideal for applications requiring quick shut-off and minimal leakage.
Gate Valves
Gate valves made from Alloy 20 are used for on/off control in pipelines. They are highly durable and resistant to corrosion, making them suitable for harsh environments.
Globe Valves
Globe valves are designed for precise flow control. Alloy 20 globe valves are commonly used in chemical processing and pharmaceutical industries.
Check Valves
Check valves prevent backflow in pipelines. Alloy 20 check valves are highly reliable and resistant to corrosion, ensuring long-term performance.
6. How to Choose the Right Alloy 20 Valve for Your Application
When selecting an Alloy 20 stainless steel valve, consider the following factors:
- Operating Environment: Assess the chemical composition, temperature, and pressure of the medium.
- Valve Type: Choose the appropriate valve type (ball, gate, globe, or check) based on your application requirements.
- Size and Pressure Rating: Ensure the valve size and pressure rating match your system specifications.
- Certifications: Look for valves that meet industry standards such as ASME, API, and ISO.
7. Maintenance Tips for Alloy 20 Stainless Steel Valves
To ensure the longevity and optimal performance of Alloy 20 valves, follow these maintenance tips:
- Regular Inspections: Check for signs of wear, corrosion, or leakage.
- Proper Lubrication: Use compatible lubricants to reduce friction and wear.
- Cleaning: Clean valves regularly to remove debris and corrosive deposits.
- Timely Repairs: Address any issues promptly to prevent further damage.
ALLOY 20 (UNS N08020) STAINLESS STEEL VALVES
- A182 F20, UNS N08020
- ASTM A351 CN7M, UNS N08007
- CARPENTER 20
- Incoloy Alloy 20
- 20Cb-3
- EN 2.4660, NiCr20CuMo
- ASTM B 366, B 463
- B 464, B 471, B 472, B 473, B 474, B 475
Falcon offered Alloy 20 valves is a nickel-iron-chromium authenticate alloy developed with the additions of copper and molybdenum for maximum resistance to acid attack, specifically sulphuric acid and phosphoric acid.These alloys are used in concentrated sulphuric acid primarily to resist velocity or turbulence. The cast form, CN7M (N08807) is used for throttling valves and pumps to withstand turbulent flow and erosion
Alloy 20 valves has excellent resistance to corrosion, pitting and crevice corrosion in pipelines containing chlorides, sulphuric, phosphoric and nitric acids. While it was originally designed for use in sulphuric acid related industries but now its widely used in Chemical, Petrochemical, food and mining industries.
Falcon has extensive experience in manufacturing of Alloy 20 stainless steel valves from size ¼”(10mm) to 24”(600mm) and pressure rating from class 150# to 2500#.
Types of Alloy 20 stainless steel Valves Manufactured by Falcon are as follows
- Ball valves
- Gate valves
- Globe valves
- Check valves
- Butterfly valves
- safety relief valves
- Control Valves
- Strainers
CHEMICAL PROPERTIES TABLE AS PER VARIOUS STANDARD SPECIFICATION
| Grade | Type UNS | C | Mn | P | S | Si | Cr | Ni | Mo | N | Cu | W |
| A 182 F20 | N08020 | 0.07 | 2 | 0.045 | 0.035 | 1.00 | 19.0-21.0 | 32.0-38.0 | 2.0-3.0 | – | 3.0-4.0 | |
| CN7M | N08007 | 0.07 | 1.5 | 0.040 | 0.040 | 1.50 | 19.0-22.0 | 27.5-30.5 | 2.0-3.0 | – | 3.4-4.0 | |
| EN 2.4660 | NiCr20CuMo | 0.07 | 2 | 0.025 | 0.015 | 1.00 | 19.0-21.0 | 32.0-38.0 | 2.0-3.0 | – | 3.0-4.0 |
All values are maximums, except where a range is provided.
MECHANICAL PROPERTIES TABLE
| Grade | Type UNS | Ultimate Tensile Strength, MPa Min | 0.2% Yield Strength, MPa Min | Elongation % Min | Hardness Brinell Max. |
| A 182 F20 | N08020 | 550 | 240 | 30 | |
| CN7M | N08007 | 425 | 170 | 35 | |
| EN 2.4660 | NiCr20CuMo | 550 | 240 | 30 | 220 |
Piping Package
Falcon can offer complete packages of Valves, Strainers, Pipes, Flanges, Fittings, Fasteners and Gaskets to support both your new projects and MRO requirements. Our own manufacturing of Alloy 20 valves, strainers and flanges along with pipe stocks from our mill partners and combined with items competitively sourced to give you a single point of supply. Our in-house testing, inspection, and machining capabilities ensure we are well-placed to offer a complete service.
FORGED F20 (UNS08020) ALLOY 20 STAINLESS STEEL BALL VALVES
Technical Specifications
| Size | ½” to 2” (10mm to 50mm) | |
| Pressure Rating | 150#, 300#, 600#, 800#, 900# & 1500# | |
| Type | Single piece, Two piece and Three piece | |
| Bore | Full (F) & Regular (R). | |
| Design | ISO 17292 / API 6D | |
| End to End
|
Socket weld ends | ASME B16.11 |
| Screwed end BSPT | ISO 7-1 | |
| Screwed end NPT | ASME B1.20.1 | |
| End Flange | ASME B16.5 RF/FF/RTJ | |
| Butt Weld | B16.25 | |
| Face to Face (Flanged) | ASME B16.10 | |
| Pressure Testing | ISO 5208/ API 598 | |
| Fire Test | ISO 10497 / API 607 | |
| Operation | Lever, Pneumatic and Electrical(Motor Operated) | |
| Material Grades | A182 F20, UNS N08020, EN 2.4660, CN7M, UNS N08007, NiCr20CuMo, Carpenter 20, 20Cb-3 and Incoloy Alloy 20 | |
CAST CN7M (UNS N08007) ALLOY 20 STAINLESS STEEL BALL VALVES
Technical Specifications
| Size | 2” to 36” (50mm to 900mm) |
| Pressure Rating | 150# to 2500# |
| Design | Floating and Trunnion |
| Type | Two piece and Three piece |
| Seat | Metal seated and Soft seated |
| Bore | Full (F) & Regular (R). |
| Design | API 6D / ISO 17292 |
| End Flanges | ASME B16.5 & ASME B16.47 SERIES A |
| Face to Face (Flanged) | ASME B16.10 |
| Buttweld Ends | ASME B16.25 |
| Inspection & Pressure Testing | API 6D and API 598 |
| Operation | Lever,Gear, Pneumatic and Electrical (Motor operated) |
| Material Grades | A182 F20, UNS N08020, EN 2.4660, CN7M, UNS N08007, NiCr20CuMo, Carpenter 20, 20Cb-3 and Incoloy Alloy 20 |
FORGED F20 (UNS08020) ALLOY 20 STAINLESS STEEL GATE VALVES
Technical Specifications
| Size | ½” to 2” (10mm to 50mm) | |
| Pressure Rating | 150#, 300#, 600#, 800#, 900#, 1500#,2500# & 2500# | |
| Valve Type | Bolted Bonnet, Welded Bonnet, OS&Y, ISRS, Bellows Seal, Cryogenic, & Pressure Seal | |
| Bore | Full (F) & Regular (R). | |
| Design | API 602, BS 5352, BS 6364 | |
| End to End
|
Socket weld ends | ASME B16.11 |
| Screwed end BSPT | ISO 7-1 & BS 21 | |
| Screwed end NPT | ASME B1.20.1 | |
| End Flange | ASME B16.5 RF/FF/RTJ | |
| Butt Weld | B16.25 | |
| Pressure/Temperature Rating | API 602 / B16.34 | |
| Valve Inspection and Testing | API 598 & BS6755 (Part 1) | |
| Operation | Lever, Pneumatic and Electrical (Motor operated) | |
| Material Grades | A182 F20, UNS N08020, EN 2.4660, CN7M, UNS N08007, NiCr20CuMo, Carpenter 20, 20Cb-3 and Incoloy Alloy 20 | |
CAST CN7M (UNS N08007) ALLOY 20 STAINLESS STEEL GATE VALVES
Technical Specifications
| Size | 2” to 36” (50mm to 900mm) |
| Pressure Rating | 150#, 300#, 600#, 900#, 1500# & 2500# |
| Valve Type | Bolted bonnet, Pressure seal bonnet, Cryogenic, Soft seated & Live loaded |
| Design | API 600, BS1414, API 603, |
| End Flanges | ASME B16.5 & ASME B16.47 SERIES A |
| Face to Face (Flanged) | ASME B16.10 |
| Buttweld Ends | ASME B16.25 |
| Pressure / Temperature rating | B16.34 |
| Inspection & Pressure Testing | API 600 and API 598 |
| Operation | Lever, Gear, Pneumatic and Electrical (Motor operated) |
| Material Grades | A182 F20, UNS N08020, EN 2.4660, CN7M, UNS N08007, NiCr20CuMo, Carpenter 20, 20Cb-3 and Incoloy Alloy 20 |
FORGED F20 (UNS08020) ALLOY 20 STAINLESS STEEL GLOBE VALVES
Technical Specifications
| Size | ½” to 2” (10mm to 50mm) | |
| Pressure Rating | 150#, 300#, 600#, 800#, 900#, 1500#,2500# & 4500# | |
| Valve Type | Bolted Bonnet, Welded Bonnet, OS&Y, ISRS, Bellows Seal, Y Type,Cryogenic, & Pressure Seal | |
| Bore | Full (F) & Regular (R) | |
| Design | BS 5352 | |
| End to End
|
Socket weld ends | ASME B16.11 |
| Screwed end BSPT | ISO 7-1 & BS 21 | |
| Screwed end NPT | ASME B1.20.1 | |
| End Flange | ASME B16.5 RF/FF/RTJ | |
| Butt Weld | B16.25 | |
| Pressure/Temperature Rating | B16.34 | |
| Valve Inspection and Testing | BS 6755 (Part 1) & API 598 | |
| Operation | Lever, Pneumatic and Electrical (Motor operated) | |
| Material Grades | A182 F20, UNS N08020, EN 2.4660, CN7M, UNS N08007, NiCr20CuMo, Carpenter 20, 20Cb-3 and Incoloy Alloy 20 | |
CAST CN7M (UNS N08007) ALLOY 20 STAINLESS STEEL GLOBE VALVES
Technical Specifications
| Size | 2” to 24” (50mm to 600mm) |
| Pressure Rating | 150#, 300#, 600#, 900#, 1500# & 2500# |
| Valve Type | Bolted bonnet, Pressure seal bonnet, Cryogenic, Y Type, Angle Globe & Live loaded Globe valves |
| Design | BS 1873 |
| End Flanges | ASME B16.5 & ASME B16.47 SERIES A |
| Face to Face (Flanged) | ASME B16.10 |
| Buttweld Ends | ASME B16.25 |
| Pressure / Temperature rating | B16.34 |
| Inspection & Pressure Testing | BS 6755 Part 1 and API 598 |
| Operation | Lever, Gear, Pneumatic and Electrical (Motor operated) |
| Material Grades | A182 F20, UNS N08020, EN 2.4660, CN7M, UNS N08007, NiCr20CuMo, Carpenter 20, 20Cb-3 and Incoloy Alloy 20 |
FORGED F20 (UNS08020) ALLOY 20 STAINLESS STEEL CHECK VALVES
Technical Specifications
| Size | ½” to 2” (10mm to 50mm) | |
| Pressure Rating | 150#, 300#, 600#, 800#, 900#, 1500#,2500# & 4500# | |
| Valve Type | Bolted Bonnet, Welded Bonnet & Y Type Check | |
| Bore | Full (F) & Regular (R) | |
| Design | BS 5352 | |
| End to End
|
Socket weld ends | ASME B16.11 |
| Screwed end BSPT | ISO 7-1 & BS 21 | |
| Screwed end NPT | ASME B1.20.1 | |
| End Flange | ASME B16.5 RF/FF/RTJ | |
| Butt Weld | B16.25 | |
| Pressure/Temperature Rating | B16.34 | |
| Valve Inspection and Testing | BS 6755 (Part 1) & API 598 | |
| Operation | Self | |
| Material Grades | A182 F20, UNS N08020, EN 2.4660, CN7M, UNS N08007, NiCr20CuMo, Carpenter 20, 20Cb-3 and Incoloy Alloy 20 | |
CAST CN7M (UNS N08007) ALLOY 20 STAINLESS STEEL CHECK VALVES
Technical Specifications
| Size | 2” to 36” (50mm to 900mm) |
| Pressure Rating | 150#, 300#, 600#, 900#, 1500# & 2500# |
| Valve Type | Bolted Cover, Pressure seal, Single Flap, Dual Plate & Non slam Check |
| Design | BS 1868, API 6D API 594 |
| End Flanges | ASME B16.5 & ASME B16.47 SERIES A |
| Face to Face (Flanged) | ASME B16.10 |
| Buttweld Ends | ASME B16.25 |
| Pressure / Temperature rating | B16.34 |
| Inspection & Pressure Testing | API 598 |
| Operation | Self |
| Material Grades | A182 F20, UNS N08020, EN 2.4660, CN7M, UNS N08007, NiCr20CuMo, Carpenter 20, 20Cb-3 and Incoloy Alloy 20 |
CAST CN7M (UNS N08007) ALLOY 20 STAINLESS STEEL BUTTERFLY VALVES
Technical Specifications
| Size | 2” to 48” (50mm to 1200mm) |
| Pressure Rating | 150#, 300#, 600#, 900#, 1500# & 2500# |
| Valve Type | Double Offset, Triple Offset, Resilient Seated & Metal seated |
| Body Pattern | Wafer, Lugged, Flanged, Hub & Buttweld |
| Design | API 609 |
| End Flanges | ASME B16.5 & ASME B16.47 SERIES A |
| Face to Face (Flanged) | API 609 |
| Buttweld Ends | ASME B16.25 |
| Pressure / Temperature rating | B16.34 |
| Inspection & Pressure Testing | API 598 & ISO 5208 |
| Operation | Lever, Gear, Pneumatic and Electrical (Motor operated) |
| Material Grades | A182 F20, UNS N08020, EN 2.4660, CN7M, UNS N08007, NiCr20CuMo, Carpenter 20, 20Cb-3 and Incoloy Alloy 20 |
CAST CN7M (UNS N08007) ALLOY 20 STAINLESS STEEL SAFETY/PRESSURE RELIEF VALVES
Technical Specifications
| Size | 1/2” to 16” (10mm to 400mm) |
| Pressure Rating | 150#, 300#, 600#, 900#, 1500# & 2500# |
| Valve Type | Direct Spring, Balanced Bellows & Full lift. |
| Body Pattern | Wafer, Lugged, Flanged, Hub & Buttweld |
| Design | ASME sec VIII & API 526/527 |
| End Flanges | ASME B16.5 & EN 1092-1 |
| Inspection & Pressure Testing | API 527 |
| Operation | Self, Pilot Operated and Power operated |
| Material Grades | A182 F20, UNS N08020, EN 2.4660, CN7M, UNS N08007, NiCr20CuMo, Carpenter 20, 20Cb-3 and Incoloy Alloy 20 |
CAST CN7M (UNS N08007) ALLOY 20 STAINLESS STEEL CONTROL VALVES
Technical Specifications
| Size | 1/2” to 16” (10mm to 400mm) |
| Pressure Rating | 150#, 300#, 600#, 900#, 1500# & 2500# |
| Valve Type | 2 way & 3 way Globe |
| Design | ANSI/ISA 75.01.01 & ASME B16.34 |
| Body Pattern | Flanged, Buttweld, Socket and Threaded |
| End Flanges | ASME B16.5 & EN 1092-1 |
| Inspection & Pressure Testing | API 589, B16.34 & ANSI/FCI70-2 |
| Operation | Self, Pilot Operated and Power operated |
| Material Grades | A182 F20, UNS N08020, EN 2.4660, CN7M, UNS N08007, NiCr20CuMo, Carpenter 20, 20Cb-3 and Incoloy Alloy 20 |
CAST CN7M (UNS N08007) ALLOY 20 STAINLESS STEEL STRAINERS
Technical Specifications
| Size | ½” to 36” (10mm to 900mm) | |
| Pressure Rating | 150#, 300#, 600#, 800#, 900#, 1500#,2500# & 2500# | |
| Construction | Cast, Forged & Fabricated | |
| Type | Y type, T Type, Simplex Basket, Duplex Basket & Conical. | |
| Design | B16.34 | |
| End to End
|
Socket weld ends | ASME B16.11 |
| Screwed end BSPT | ISO 7-1 & BS 21 | |
| Screwed end NPT | ASME B1.20.1 | |
| End Flange | ASME B16.5 RF/FF/RTJ | |
| Butt Weld | B16.25 | |
| Pressure/Temperature Rating | B16.34 | |
| Valve Inspection and Testing | API 598 & B31.1 | |
| Operation | Lever, Pneumatic and Electrical (Motor operated) | |
| Material Grades | A182 F20, UNS N08020, EN 2.4660, CN7M, UNS N08007, NiCr20CuMo, Carpenter 20, 20Cb-3 and Incoloy Alloy 20 | |
Frequently Asked Questions (FAQs)
Q1: What is Alloy 20 stainless steel?
Alloy 20 is a nickel-iron-chromium alloy known for its exceptional corrosion resistance, particularly in acidic and chloride-rich environments. It is commonly used in chemical processing, pharmaceuticals, and food production.
Q2: Why choose Alloy 20 stainless steel valves?
Alloy 20 valves offer superior corrosion resistance, high strength, and durability, making them ideal for harsh environments where other materials would fail.
Q3: Can Alloy 20 valves handle sulfuric acid?
Yes, Alloy 20 is specifically designed to resist corrosion from sulfuric acid, making it a preferred choice for chemical processing applications.
Q4: Are Alloy 20 valves suitable for high-temperature applications?
Yes, Alloy 20 valves can withstand high temperatures, making them suitable for a wide range of industrial applications.
Q5: How do I maintain Alloy 20 stainless steel valves?
Regular inspections, proper lubrication, cleaning, and timely repairs are essential for maintaining the performance and longevity of Alloy 20 valves.