Nickel Alloy 20 Seamless Pipes Manufacturer and Supplier in Thailand
Nickel Alloy 20 Seamless Pipe is a corrosion-resistant pipe made from a nickel-iron-chromium alloy with additions of copper and molybdenum. Thaida Stainless Steel Manufacturing (Thailand) Co., Ltd., based in Chon Buri, is a trusted producer of high-quality Nickel Alloy 20 seamless pipes for diverse industries. These pipes are ideal for high-temperature environments and comply with ASTM B729 standards. DIN 2.4660 pipes offer excellent resistance to sulfuric, phosphoric and nitric acids, making it a top choice for chemical plants, marine applications and pharmaceuticals. With various sizes, schedules, shapes and surface finishes available, we also provide customization options to meet project-specific needs. Our products comply with industry certifications and undergo quality testing to ensure reliability and performance of alloy 20 pipe in even the most challenging applications.
Product Overview of Nickel Alloy 20 Seamless Pipes
Nickel Alloy 20 Seamless Pipes (UNS N08020) are high-performance seamless pipes designed to withstand acidic environments, particularly sulfuric acid, making them distinct from standard stainless steels. With a nickel content ranging between 32-38%, these pipes have high tensile strength of 80,000 psi (550 MPa) and a yield strength of 35,000 psi (241 MPa). Alloy 20 seamless nickel pipe is available in various dimensions, including nominal sizes from 1/2” through 12”, with options like 1-1/2 S40, wall thickness of 0.145 IN and SCH 40 Schedule. They are typically solution-annealed at temperatures ranging from 1725 degrees C to 1850 degrees C for enhanced performance in high-temperature applications.
Key Benefits Of Nickel Alloy 20 Seamless Pipes
Alloy 20 seamless pipes offer various advantages such as durability, high strength, weldability and more mentioned below , which make them perfect for high-temperature & pressure applications.
Enhanced Corrosion Resistance
Excellent resistance to sulfuric, phosphoric and nitric acids, ideal for chemical and marine applications.
High-Temperature Performance
These pipes withstands extreme temperatures up to 1850°C without losing mechanical properties or structure.
Good Weldability
Alloy 20 seamless pipes can easily be weldable using standard techniques, making fabrication and installation smoother and more efficient.
Non-Magnetic
Remains non-magnetic even after cold working, suitable for sensitive equipment and environments.
Strength and Structural Integrity
These pipes offer high tensile strength of 80,000 psi and yield strength of 35,000 psi, ensuring robust performance.
Durability
Designed to perform under stress for long durations, reducing maintenance and replacement needs over time.
Why Choose Our Nickel Alloy 20 Seamless Pipes
As a trusted exporter of high-quality nickel alloy 20 seamless pipes, we offer reliable pipes at a competitive price without compromising on performance. Each pipe is tested for strength, corrosion resistance and durability to ensure consistent quality. Available in various sizes, schedules and surface finishes, our pipes can also be customized to meet your specific project requirements.
Competitive Pricing
Global Exports Expertise
Large Inventory & Fast Delivery
Custom Sizes & Special Orders
Industry Certifications & Compliance
Premium Materials & Strict Quality Control
After-Sales Support & Service
In-House Testing & Full Traceability
Specifications Of UNS N08020 Seamless Pipes
The detailed alloy 20 pipe specifications table outlines manufacturing technique, form, dimensions, length, and compliance with global standards.
| ASTM Specification | ASTM B729/ASME SB729 |
|---|---|
| Standard | AMS, JIS, NF, DIN, ASTM, AISI, SAE, GB, DS, EN, ASME, TOCT, DTD |
| Size of Seamless Pipes | Wall thickness.: 0.05- 20 milimeter, 4 - 219 milimeter |
| Wall thickness | 0.020" –0.220", (custom wall thicknesses available) |
| Bwg & Swg | 18 Swg., 14Swg., 20 Swg., 12 Swg., 16 Swg., 10 Swg. |
| Length | Standard & Cut length , Single Random, Double Random Pipes |
| Pipe Schedule | SCH80, XXS, SCH10S, SCH5, XS, SCH80, SCH120, SCH160, SCH140, SCH30, STD, SCH40S, SCH40, SCH10, SCH60, SCH20 |
| End | Plain End, Beveled End, Treaded Pipes, Screwed ends |
| Finish | AP (Annealed & Pickled), BA (Bright & Annealed), NO.1, 2B, Polished, MF, HL, NO.4, Mirror finish, BA, 8K etc |
| Form | Round, Square, Rectangular. |
| Marking | Heat No. (Or as per need.), Thickness, OD, Grade, Standard Length |
| Type | Seamless |
| Value Added Service | Expansion and Draw as per needed Length and Size, , Polish (Comilimeterercial and Electro), Machining, Annealed & Pickled Bending Etc. |
| Test Certificate |
|
| manufacturing Technique | Cold drawn, hot drawn, bright annealed, solid solution, hot extruding |
ASTM B729 UNS N08020 Seamless Pipes Chemical Composition
The below chemical composition of alloy 20 pipe table includes the percentage of elements like nickel, chromium, molybdenum and others.
| Grade | Ni | C | Mn | P | S | Si | Cr | Nb | Mo | Cu |
|---|---|---|---|---|---|---|---|---|---|---|
| Alloy 20 | 32 to 38 | 0.002 maximum | 1 to 2 | 0.002 maximum | 0.005 maximum | 0.7 maximum | 19 to 21 | 0.01 to 0.03 | 2 to 3 | 3 to 4 |
Mechanical Properties ASTM B729 Nickel Alloy 20 Seamless Pipes
UNS N08020 seamless pipe mechanical properties like tensile strength, yield strength, and elongation are outlined below.
| Grade | Melting Point | Density | Yield Strength (0.2%Offset) | Tensile Strength | Elongation |
|---|---|---|---|---|---|
| Alloy 20 | 1443 °C (2430 °F) | 8.1 g/cm3 | Psi - 35,000, MPa - 241 | Psi -80,000, MPa -551 | 30 % |
Equivalent Of Alloy 20 Seamless Steel Pipes
The equivalent table for nickel alloy 20 pipes outlines global standards, grade names, and UNS designations.
| STANDARD | AFNOR | UNS | EN | WERKSTOFF NR. |
|---|---|---|---|---|
| Alloy 20 | Z2NCUD31-20AZ | N08020 | NiCr20CuMo | 2.4660 |
Dimensions Of Nickel Alloy 20 Seamless Pipes
Our alloy 20 seamless pipes dimension chart includes outer diameters, wall thicknesses, schedules and available sizes for precise pipeline configuration.
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
|---|---|---|---|---|
| 8.14 g/cm3 | 1343°C | 650 | 300 | 30 % |
Nickel Alloy 20 Seamless Pipes Price
This alloy 20 seamless pipe price table provides an overview of pricing based on size, thickness and schedule of the seamless pipes.
| Nominal Thickness (in) MM |
Pipe Size (in) |
Transverse Areas (in²) MM² |
Diameter (in) MM |
Volume (ft³/ft) |
Number of Threads per Inch of Screw |
Weight | Length of Pipes (ft per sq. foot of surface) |
|||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Internal | External | Steel | Internal | External | (kg/m) | (lb/ft) | Internal Surface | External Surface |
||||
| 0.007 | 1/8 | 0.006 | 0.013 | 0.007 | 0.027 | 0.0405 | 0.00004 | 27 | 0.036 | 0.024 | 14.020 | 9.043 |
| 0.009 | ¼ | 0.010 | 0.023 | 0.013 | 0.036 | 0.0540 | 0.00007 | 18 | 0.063 | 0.042 | 10.049 | 7.007 |
| 0.009 | 3/8 | 0.019 | 0.036 | 0.017 | 0.049 | 0.0675 | 0.00013 | 18 | 0.084 | 0.057 | 7.075 | 5.066 |
| 0.011 | ½ | 0.030 | 0.055 | 0.025 | 0.062 | 0.0840 | 0.00021 | 14 | 1.026 | 0.085 | 6.014 | 4.055 |
| 0.011 | ¾ | 0.053 | 0.087 | 0.033 | 0.082 | 1.0050 | 0.00037 | 14 | 1.068 | 1.013 | 4.064 | 3.064 |
| 0.013 | 1 | 0.086 | 1.036 | 0.049 | 1.005 | 1.0315 | 0.00060 | 11 ½ | 2.050 | 1.068 | 3.064 | 2.090 |
| 0.014 | 1 ¼ | 1.050 | 2.016 | 0.067 | 1.038 | 1.0660 | 0.00104 | 11 ½ | 3.038 | 2.027 | 2.077 | 2.030 |
| 0.015 | 1 ½ | 2.004 | 2.084 | 0.080 | 1.061 | 1.0900 | 0.00141 | 11 ½ | 4.004 | 2.072 | 2.037 | 2.001 |
| 0.015 | 2 | 3.036 | 4.043 | 1.008 | 2.007 | 2.0375 | 0.00233 | 11 ½ | 5.043 | 3.065 | 1.085 | 1.061 |
| 0.020 | 2 ½ | 4.079 | 6.049 | 1.070 | 2.047 | 2.0875 | 0.00333 | 8 | 8.062 | 5.079 | 1.055 | 1.033 |
| 0.022 | 3 | 7.039 | 9.062 | 2.023 | 3.007 | 3.0500 | 0.00513 | 8 | 11.027 | 7.058 | 1.025 | 1.009 |
| 0.023 | 3 ½ | 9.089 | 12.056 | 2.068 | 3.055 | 4.0000 | 0.00687 | 8 | 13.056 | 9.011 | 1.008 | 0.095 |
| 0.024 | 4 | 12.073 | 15.090 | 3.017 | 4.003 | 4.0500 | 0.00884 | 8 | 16.006 | 10.079 | 0.095 | 0.085 |
| 0.026 | 5 | 20.000 | 24.030 | 4.030 | 5.005 | 5.0563 | 0.01389 | 8 | 21.074 | 14.061 | 0.076 | 0.069 |
| 0.028 | 6 | 28.089 | 34.047 | 5.058 | 6.007 | 6.0625 | 0.02006 | 8 | 28.023 | 18.097 | 0.063 | 0.058 |
| 0.032 | 8 | 50.002 | 58.042 | 8.040 | 7.098 | 8.0625 | 0.03552 | 8 | 42.049 | 28.055 | 0.048 | 0.044 |
| 0.037 | 10 | 78.085 | 90.076 | 11.090 | 10.002 | 10.0750 | 0.05476 | 8 | 60.024 | 40.048 | 0.038 | 0.036 |
| 0.041 | 12 | 111.090 | 127.064 | 15.074 | 11.094 | 12.0750 | 0.07763 | 8 | 79.077 | 53.060 | 0.032 | 0.030 |
| 0.044 | 14 | 135.030 | 153.094 | 18.064 | 13.013 | 14.0000 | 0.09354 | 8 | 93.075 | 63.000 | 0.028 | 0.027 |
| 0.050 | 16 | 176.070 | 201.005 | 24.035 | 15.000 | 16.0000 | 1.02230 | 8 | 116.008 | 78.000 | 0.025 | 0.024 |
| 0.056 | 18 | 224.000 | 254.085 | 30.085 | 16.088 | 18.0000 | 1.05550 | 8 | 156.026 | 105.000 | 0.023 | 0.021 |
| 0.059 | 20 | 278.000 | 314.015 | 36.015 | 18.081 | 20.0000 | 1.09260 | 8 | 183.005 | 123.000 | 0.020 | 0.019 |
| 0.069 | 24 | 402.010 | 452.040 | 50.030 | 22.063 | 24.0000 | 2.07930 | 8 | 254.048 | 171.000 | 0.017 | 0.016 |
Nickel Alloy 20 Seamless Pipes Size Chart
The alloy 20 seamless pipes size chart lists nominal pipe sizes along with corresponding dimensions to help with accurate piping system alignment.
| Regular Wall (RW) mm | Gauge | Extra Thin Wall (XTW) mm | Outside Diameter Tolerance mm | Ultra Thin Wall (UTW) mm | Thin Wall (TW) mm |
|---|---|---|---|---|---|
| 0.0064 to 0.0089 | 30 | 0.0304 to 0.0317 | |||
| 0.0064 to 0.0089 | 29 | o.0330 to 0.0342 | |||
| 0.0076 to 0.0102 | 28 | 0.0355 to 0.0368 | |||
| 0.0089 to 0.0115 | 27 | 0.0406 to 0.0419 | 0.0064 to 0.0089 | ||
| 0.0089 to 0.0114 | 26 | 0.0457 to 0.0469 | |||
| 0.0115 to 0.0140 | 25 | 0.0508 to 0.0520 | 0.0089 to 0.0114 | ||
| 0.0114 to 0.0140 | 24 | 0.0558 to 0.0571 | 0.0051 to 0.0102 | 0.0089 to 0.0114 | |
| 0.0140 to 0.0165 | 23 | 0.0635 to 0.0647 | 0.0051 to 0.0102 | 0.0089 to 0.0114 | |
| 0.0140 to 0.0165 | 22 | 0.0077 to 0.0102 | 0.0711 to 0.0723 | 0.0051 to 0.0102 | 0.0096 to 0.0121 |
| 0.0140 to 0.0165 | 21 | 0.0812 to 0.0825 | 0.0051 to 0.0102 | 0.0102 to 0.0127 | |
| 0.0108 to 0.0165 | 20 | 0.0901 to 0.0914 | 0.0108 to 0.0134 | ||
| 0.0166 to 0.0216 | 19 | 0.0070 to 0.0108 | 1.0054 to 1.0079 | 0.0102 to 0.0140 | |
| 0.0191 to 0.0241 | 18 | 0.0083 to 0.0121 | 1.0257 to 1.0282 | 0.0051 to 0.0102 | 0.0127 to 0.0165 |
| 0.0177 to 0.0229 | 17 | 0.0083 to 0.0127 | 1.0460 to 1.0485 | 0.0057 to 0.0102 | 0.0115 to 0.0152 |
| 0.0204 to 0.0254 | 16 | 0.0096 to 0.0133 | 1.0638 to 1.0663 | 0.0070 to 0.0121 | 0.0127 to 0.0165 |
| 0.0204 to 0.0254 | 15 | 0.0096 to 0.0134 | 1.0816 to 1.0841 | 0.0070 to 0.0121 | 0.0127 to 0.0165 |
| 0.0216 to 0.0292 | 14 | 0.0114 to 0.0165 | 2.0082 to 2.0133 | 0.0076 to 0.0134 | 0.0165 to 0.0229 |
| 0.0267 to 0.0343 | 13 | 2.0387 to 2.0438 | 0.0191 to 0.0267 | ||
| 0.0267 to 0.0321 | 12 | 2.0743 to 2.0749 | |||
| 0.0293 to 0.0368 | 11 | 3.0023 to 3.0073 | 0.0216 to 0.0292 | ||
| 0.0318 to 0.0394 | 10 | 0.0216 to 0.0292 | 3.0378 to 3.0429 |
Manufacturing Process of Nickel Alloy 20 Seamless Pipes
There are 5 steps involved in the alloy 20 seamless pipe manufacturing process which are given below. Every step of production is precisely controlled to comply with stringent industry standards.
1. Raw Material Selection
High-quality nickel alloy billets and strips are carefully selected for superior strength and corrosion resistance.
2. Pipes Formation
The selected raw material is formed into pipes using seamless extrusion methods, depending on the application.
3. Heat Treatment
Pipes undergo required controlled heat treatment to enhance mechanical properties and relieve internal stresses.
4. Cold Working and Finishing
After heat treatment, pipes are cold-worked for better surface finish, dimensional accuracy and improved strength.
5. Quality Control and Testing
Every pipe is thoroughly inspected and tested to ensure it meets international quality standards for performance and reliability.
Application Of Nickel Alloy 20 Seamless Pipes
Nickel Alloy 20 Seamless Pipes are widely used in the chemical processing industry, especially for handling sulfuric acid in piping systems and storage tanks. They are also used in pharmaceutical, food processing, and power generation industries where resistance to acidic and corrosive environments is critical.
Chemical and Petrochemical Industry
Oil and Gas Industry
Power Generation & Heat Exchange
Aerospace & Defense
Automotive and Transportation
Construction and Architecture
Food and Beverage Industry
Marine & Shipbuilding
Pharmaceutical & Biotechnology
FAQ's
What industries commonly use Nickel Alloy 20 Seamless Pipes?
Nickel Alloy 20 Seamless Pipes are commonly used in industries that handle aggressive, hot corrosive chemicals. These sectors include the chemical processing industry for sulfuric acid, nitric acid, and phosphate service, petrochemicals, and food and pharmaceutical production. They are also essential in equipment used for acid pickling and synthetic rubber production.
What is Alloy 20 pipe made of?
Alloy 20 pipe is made of an austenitic nickel-iron-chromium alloy. It also contains significant amounts of molybdenum and copper. This precise composition gives the material exceptional resistance to corrosive environments like hot sulfuric acid. The high nickel content is key to its outstanding performance.
Do Nickel Alloy 20 Seamless Pipes require post-weld heat treatment?
Nickel Alloy 20 Seamless Pipes do not require post-weld heat treatment (PWHT). The low carbon content is specifically designed to resist the formation of harmful precipitates during welding. Skipping PWHT makes the fabrication process easy and more cost-effective while ensuring the pipe maintains its full corrosion resistance.
What is Alloy 20 material grade?
Alloy 20 is an industrial material grade also known as UNS N08020. It is classified as an austenitic stainless steel or nickel alloy. This grade is specifically made to offer high resistance to intergranular corrosion and stress corrosion cracking in aggressive acidic environments.
Why should I choose Nickel Alloy 20 Seamless Pipes over stainless steel pipes?
You should choose Nickel Alloy 20 Seamless Pipes when a standard stainless steel pipe (like Type 304 or 316) is insufficient. Alloy 20 offers significantly better resistance to hot sulfuric acid and localized corrosion, such as pitting and crevice attack. Its higher nickel, copper, and molybdenum content provides a superior protection in severe applications.
How do you weld Alloy 20?
Alloy 20 is welded using standard methods like Gas Tungsten Arc Welding (GTAW or TIG) or Shielded Metal Arc Welding (SMAW or Stick). It is crucial to use matching filler metals (such as ERNiCrMo-3 or W86120) and proper heat input control. Cleanliness and the use of inert shielding gas are necessary to maintain weld integrity.
What is the tensile strength of Nickel Alloy 20 Seamless Pipes?
The minimum tensile strength of Nickel Alloy 20 Seamless Pipes is approximately 550 MPa (80,000 psi). This is considered a good mechanical strength level for an alloy optimized for corrosion resistance. The strength is sufficient for high-pressure industrial piping systems.
What is Alloy 20 cast material?
Alloy 20 cast material is the version of the alloy made through a casting process, typically designated as CN7M. This cast form maintains similar corrosion resistance properties but is shaped for components like pumps and valves. Its composition is slightly adjusted to improve castability while remaining metallurgically compatible with the wrought pipe material.