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ASTM B729 Alloy20 (UNS N08020) Seamless Tube, Corrosion-Resistant for Acidic Environments
ASTM B729 Alloy20 (UNS N08020) Seamless Tube, Corrosion-Resistant for Acidic Environments
ASTM B729 Alloy20 (UNS N08020) Seamless Tube, Corrosion-Resistant for Acidic Environments
ASTM B729 Alloy20 (UNS N08020) Seamless Tube, Corrosion-Resistant for Acidic Environments
ASTM B729 Alloy20 (UNS N08020) Seamless Tube, Corrosion-Resistant for Acidic Environments
ASTM B729 Alloy20 (UNS N08020) Seamless Tube, Corrosion-Resistant for Acidic Environments
ASTM B729 Alloy20 (UNS N08020) Seamless Tube, Corrosion-Resistant for Acidic Environments
ASTM B729 Alloy20 (UNS N08020) Seamless Tube, Corrosion-Resistant for Acidic Environments
Specifications
Brand Name :
YUHONG
Model Number :
ASTM B729 N08020
Certification :
ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008
Place of Origin :
CHINA
MOQ :
1000 KGS
Price :
Negotiable
Payment Terms :
T/T,L/C
Supply Ability :
50 Tons/Month
Delivery Time :
Depends On Quantity
Packaging Details :
wooden Cases
Standard :
ASTM B729 / ASME SB729, ASTM B829
Grade :
Alloy20 (UNS N08020, EN 2.4660), Nickel-Iron-Chromium Alloy
Type :
Seamless Tube (SMLS), Hot-Finished / Cold-Worked
Process :
Hot Extrusion/Piercing, Cold Drawing/Rolling, Stabilized Annealing
Outside Diameter :
6mm – 325mm (1/4” – 12”)
Wall Thickness :
0.5mm – 30mm, SCH 5S – SCH XXS
Length :
6000mm – 12000mm, Custom Length Optional
Dimensional Tolerance :
Complies with ASTM B729, ±0.03mm (WT), ±0.5mm (OD)
Description

ASTM B729 Alloy20 (UNS N08020) Seamless Tube, Corrosion-Resistant for Acidic Environments

Brief Introduction

ASTM B729 Alloy20 seamless tube (SMLS TUBE) is a high-performance nickel-iron-chromium-molybdenum-copper alloy tube, strictly compliant with ASTM B729 / ASME SB729 standard, mainly made of Alloy20 (UNS N08020, EN 2.4660). It is a super austenitic alloy specially designed for corrosive service, featuring excellent resistance to sulfuric acid, phosphoric acid and chloride ion stress corrosion cracking, superior to ordinary stainless steel. With good mechanical properties, weldability and processing performance, it is a key component for conveying corrosive media in harsh industrial environments, widely used in chemical, petrochemical, pharmaceutical and other fields to ensure stable and efficient operation of pipeline systems.

Chemical Composition Analysis (wt%)

Alloy Grade C Cr Ni Mo Cu Mn Si P S Ti
ASTM B729 Alloy20 (UNS N08020) ≤0.07 19.0-21.0 32.0-38.0 2.0-3.0 3.0-4.0 ≤2.0 ≤1.0 ≤0.045 ≤0.035 0.6-1.2

Typical Mechanical Properties

Mechanical Property Standard Requirement (ASTM B729) Typical Value
Yield Strength (Rp0.2), MPa ≥240 245-320
Tensile Strength (Rm), MPa ≥550 560-700
Elongation (A), % ≥30 32-40
Hardness (HB), Brinell ≤200 140-190
Impact Toughness (KV), J (-20℃) ≥80 85-110

Product Application Scope


Industry Field Typical Applications
Chemical Processing Sulfuric/phosphoric acid conveying pipelines, reactors, heat exchangers, acid washing equipment, chemical reagent transfer systems
Petrochemical Oil refining corrosive media pipelines, offshore oil platforms, flue gas desulfurization (FGD) systems, crude oil processing auxiliary pipelines
Pharmaceutical High-purity medium conveying pipelines, sterile equipment, chemical reagent conveying tubes, pharmaceutical purification systems
Marine Engineering Seawater treatment pipelines, marine vessel corrosive-resistant tubes, coastal industrial equipment, offshore drilling platform pipelines
Environmental Protection Wastewater treatment pipelines, hazardous waste treatment equipment, acid-base waste conveying systems, flue gas purification pipelines
Other Chemical laboratories, electrolytic water hydrogen production equipment, high-purity water treatment systems, pickling industry pipelines
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ASTM B729 Alloy20 (UNS N08020) Seamless Tube, Corrosion-Resistant for Acidic Environments

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Product Detail
Brand Name :
YUHONG
Model Number :
ASTM B729 N08020
Certification :
ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008
Place of Origin :
CHINA
MOQ :
1000 KGS
Price :
Negotiable
Contact Supplier
ASTM B729 Alloy20 (UNS N08020) Seamless Tube, Corrosion-Resistant for Acidic Environments
ASTM B729 Alloy20 (UNS N08020) Seamless Tube, Corrosion-Resistant for Acidic Environments
ASTM B729 Alloy20 (UNS N08020) Seamless Tube, Corrosion-Resistant for Acidic Environments
ASTM B729 Alloy20 (UNS N08020) Seamless Tube, Corrosion-Resistant for Acidic Environments

Yuhong Group Co.,Ltd

Verified Supplier
14 Years
zhejiang, ningbo
Since 2007
Business Type :
Manufacturer, Distributor/Wholesaler, Importer, Exporter, Trading Company, Seller, Other
Main Products :
Stainless Steel Seamless Pipe, Stainless Steel Seamless Tube, Duplex Stainless Steel Pipe
Total Annual :
50M-70M
Employee Number :
50~850
Certification Level :
Verified Supplier
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