ASTM B729 ALLOY 20 / UNS NO8020 Hastelloy Seamless Pipe

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ASTM B729 ALLOY 20 / UNS NO8020 Hastelloy Seamless Pipe

Brand Name	YUHONG
Model Number	ASTM B729 ALLOY20 (NO8020 / 2.4660)
Certification	ABS , GL , DNV , NK , PED , AD2000 , GOST9941-81 , CCS , ISO 9001-2008
Place of Origin	China
Minimum Order Quantity	1PC
Price	Negotiable
Payment Terms	T/T, L/C AT SIGHT
Supply Ability	50 tons per month
Delivery Time	Depends on quantity
Packaging Details	Ply-wooden Case /Iron Case/ Bundle with plastic Cap
Standard	ASTM B729/ASME SB729
Material Grade	ALLOY20 (NO8020 / 2.4660)
Surface	Pickled and Annealed, Bright Annealed, Polished
Type of tube	Straight Tube
Alloy or not	Nickel Alloy
Special type	Thick Wall Pipe

Detailed Product Description

ASTM B729 ALLOY 20 / UNS NO8020 HASTELLOY SEAMLESS PIPE

ASTM B729 specifies the requirements for seamless pipes made from corrosion-resistant alloys, including Alloy 20 (UNS N08020). This material, classified as a nickel-iron-chromium (Ni-Fe-Cr) alloy, is specifically designed for superior corrosion resistance, especially in chemical processing environments.

Key Features of ASTM B729 Alloy 20 / UNS N08020 Pipes

Corrosion Resistance:
- Excellent resistance to sulfuric acid, nitric acid, and phosphoric acid.
- High resistance to pitting, crevice corrosion, and chloride ion stress-corrosion cracking.
- Ideal for environments containing strong oxidizers, organic acids, and reducing agents.
High-Performance Material:
- Enhanced mechanical strength due to its unique alloy composition.
- Suitable for both cryogenic and elevated-temperature applications.
Versatile Applications:
- Commonly used in chemical, pharmaceutical, food processing, and marine industries.
- Widely applied in heat exchangers, condensers, and storage tanks.

Alloy 20 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 %

B729 Alloy 20 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

Manufacturing Specifications for ASTM B729 Seamless Pipes

Standards & Dimensions:
- Manufactured under ASTM B729 standards with precise dimensional tolerances.
- Available in various sizes, wall thicknesses, and lengths as per project requirements.
Production Process:
- Pipes are produced by seamless hot-working methods and, if necessary, are cold-finished to achieve the desired mechanical properties and dimensions.
Testing & Certification:
- Includes hydrostatic testing, non-destructive testing (NDT), and chemical analysis to ensure compliance with ASTM standards.
- Certified with material test reports (MTR) containing chemical and mechanical properties.

Application of Alloy 20

Chemical Industry: Acid tanks, piping systems, and reactors.
Petrochemical Plants: Heat exchangers and process piping.
Marine Applications: Seawater piping and desalination equipment.
Pharmaceutical Equipment: For sterile and non-reactive environments.

Product Tags: Seamles UNS NO8020 Pipe ASTM B729 UNS NO8020 Pipe UNS NO8020 Pipe

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