ASTM B729 N08020 Nickel Alloy High-Pressure Pipe
Gnee Steel
ASTM B729 N08020 Nickel Alloy High-Pressure Pipe
ASTM B729 UNS N08020 pipe is a specification for nickel alloy piping suitable for high-pressure applications, designed to provide excellent corrosion resistance, particularly to sulfuric acid. It is a versatile material used extensively in the chemical, petrochemical, and pharmaceutical industries, offering good mechanical properties and resistance to chloride corrosion, pitting, and stress corrosion cracking. This specification covers seamless pipe that undergoes extensive quality control and testing procedures.
Gnee Steel
What is B729 N08020 material?
Alloy 20 pipe (ASTM B729 N08020, DIN 17751 2.4660) is a highly corrosion-resistant alloy that exhibits excellent corrosion resistance to phosphoric acid, nitric acid, and sulfuric acid in chloride-containing media. DIN 17751 2.4660 Alloy 20 is primarily used in the chemical industry, instrumentation, and heat exchangers.
ASME SB729 Alloy 20 Pipe Mechanical Properties
| Density | Melting Range | Yield Stress (0.2%Offset) | Tensile Stress | Elongation |
| 8.1 g/cm3 | 1443 °C (2430 °F) | Psi - 35000 , MPa - 241 | Psi - 80000 , MPa - 551 | 30 % |
Alloy WERKSTOFF NR. 2.4660 Pipe Chemical Composition
| Ni | C | Mo | Mn | Si | Fe | Cu | S | P | Cr |
| 32 - 38 | 0.02 max | 2 - 3 | 1 - 2 | 0.7 max | Bal | 3 - 4 | 0.005 max | 0.02 max | 19 - 21 |
Carpenter 20 Equivalent
| STANDARD | UNS | WERKSTOFF NR. | AFNOR | EN | JIS | BS | GOST |
| Alloy 20 | N08020 | 2.4660 | Z2NCUD31-20AZ | NiCr20CuMo | - | - | - |
ASTM B729 N08020 is the specification for N08020 nickel alloy seamless pipe. This alloy is a high-performance material with excellent corrosion resistance, high strength, and good thermal stability. Pipe produced to this specification is commonly used in industries such as chemical processing, oil and gas, and offshore.
ASTM B729 specifies the dimensions, mechanical properties, and testing requirements for N08020 nickel alloy pipe. This standard ensures that the pipe meets the quality standards required for its intended use. Manufacturers and suppliers of these pipes must adhere to the requirements of this specification to ensure product reliability and performance.
Applications
Chemical Processing: Suitable for a variety of chemical processing applications due to its resistance to a wide range of acids, bases, salts, and seawater.
Sulfuric Acid Corrosion Resistance: Specifically designed to withstand sulfuric acid corrosion.
Chloride Stress Corrosion Cracking Resistance: Excellent resistance to stress corrosion cracking in chloride-containing environments.
Pharmaceutical and Food Industries: Used in industries requiring corrosion-resistant materials.
Petrochemical Industry: Commonly used in the petrochemical industry.
Manufacturing and Quality Control
Seamless Pipe: This specification primarily covers seamless pipe.
Manufacturing Process: Pipe is manufactured through processes such as extrusion and cold drawing to achieve the desired dimensions.
Quality Testing: Stringent inspections such as visual inspection, hydrostatic testing, ultrasonic testing, and eddy current testing are performed to ensure quality and integrity.
As-Supplied Condition: Typically supplied in the stabilized annealed condition.
Gnee Steel specializes in the production and sale of various nickel-based alloys, including Nickel 201, Nickel 202, Hastelloy C-276, Hastelloy C-22, Hastelloy B, Hastelloy C-4, Inconel Alloy 600, Inconel 625, Inconel 718, Inconel X-750, Incoloy Alloy 800, Incoloy 800H/HT, Incoloy 825, Monel Alloy 400, Monel K500, and high-temperature alloys. Gnee Steel's products are widely used in aerospace, chemical, electric power, automotive, and nuclear energy applications. We also offer customized alloy solutions tailored to customer needs. For alloy pricing inquiries or customized alloy solutions, please contact us for a quote at ss@gneesteel.com.
