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Payment Type: T/T,L/C
Transportation: Ocean,Air,Land,Express
Model No.: ASTM B729/ASME SB729
Brand: YUHONG
Standard: Gb, Astm
Section Shape: Round
Application: Structure Pipe
Production Process: Cold Drawn
Whether Alloy: Is Alloy
Category: Seamless Steel Pipe
ASTM B729/ASME SB729 UNS N08020 Nickel Alloy Steel Pipe
What is Alloy 20?
Alloy 20 or carpenter 20 is an alloy that is classified under super austenitic stainless steel. Well-liked for general corrosive service, this stainless steel grade is highly rated by most Alloy 20 Tube suppliers. Primarily this alloy was developed as a means to counter corrosion problems associated with sulfuric acid. Unlike regular stainless steel and steel grades, the UNS N08020 Tube displays superior resistance to sulfuric acid, particularly when placed in aggressive environments, which could cause failure of the more conventional austenitic alloys.
Apart from sulfuric acid, Alloy 20 Seamless Tubing exhibits good resistance to general corrosion when exposed to applications that contain chlorides or acids like sulfuric acid, nitric acid & phosphoric acid. During the production of the alloy, some amount of niobium is added to it. Niobium has a stabilizing effect on the Carpenter 20 Tubing against sensitization as well as from the resultant decay by intergranular corrosion. The weldability properties are also superior of the Alloy 20 Welded Tubes. They could be furnished in any one of the following conditions - solution annealed condition or stabilized annealed condition or in an annealed condition. Testing the ASME SB 729 UNS N08020 Nickel Alloy Steel Pipe for elongation, yield and tensile strength is an important requirement. Moreover, each specimen or component belonging to the ASTM B729 UNS N08020 are subjected to tests like the hydrostatic test or a nondestructive electric test. The ease in fabrication, with excellent resistance to corrosion in combination with its magnified mechanical properties, makes the Alloy 20 Tubing a valued addition for applications like heat exchangers, Chemical and petroleum processing equipment or for several process-based industries.
ASTM B729: Standard Specification for Seamless Nickel-Iron-Chromium-Molybdenum-Copper Nickel Alloy Steel Pipe and Tube
This specification covers UNS N08020, UNS N08026 and UNS N08024 nickel-alloy seamless, cold-worked or hot-finished pipe and tube intended for general corrosive service. The product of UNS N08020 alloy, UNS N08026 alloy, and UNS N08024 alloy shall be furnished in the stabilized-annealed condition, solution-annealed condition, and annealed condition, respectively. The tensile strength, yield strength, and elongation requirements are specified. Hydrostatic and nondestructive electric tests shall be conducted on the each pipe or tube.
· Excellent resistance to chloride stress corrosion cracking
· Excellent mechanical properties and fabricability
· Minimal carbide precipitation during welding
· Excellent in resisting corrosion to hot sulfuric acid
B729 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 |
| STANDARD | UNS | WERKSTOFF NR. | AFNOR | EN | JIS | BS | GOST |
| Alloy 20 | N08020 | 2.4660 | Z2NCUD31-20AZ | NiCr20CuMo | - | - | - |
| Selling Units | : | Kilogram |
|---|---|---|
| Package Type | : | Ply-wooden Case /Iron Case/ Bundle with plastic Cap |
| Picture Example | : |
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Packaging: Ply-wooden Case /Iron Case/ Bundle with plastic Cap
Productivity: 100 tons per month
Transportation: Ocean,Air,Land,Express
Place of Origin: China
Supply Ability: According To Client's Request
Certificate: ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008
HS Code: 7507120000
Payment Type: T/T,L/C
Incoterm: FOB,CFR,CIF,EXW
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