ASTM B407 UNS N08800 Seamless Annealed Pipe for Ethylene Cracking

Oct 23, 2025

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ASTM B407 UNS N08800 Seamless Annealed Pipe is designed specifically for ethylene cracking furnaces. Made from a nickel-iron-chromium alloy (45.0-48.0% nickel, 30.0-35.0% iron, and 19.0-23.0% chromium), it is enhanced with aluminum (0.15-0.60%) and titanium (0.15-0.60%) for carbide stability. The solution annealing process optimizes the grain structure, resulting in a tensile strength of 500-700 MPa and a yield strength of ≥210 MPa, while maintaining excellent thermal cycling ductility.


All pipes are supplied with a mill test certificate (EN 10204 3.1) and optional third-party corrosion and metallurgical analysis reports, ensuring compliance with ASME and petrochemical industry standards for critical high-temperature process piping.

 

ASTM B407 Incoloy 800 solution-annealed seamless pipe

 

Specification Chart of Incoloy 800H Pipe

Standard Specification ASTM B514 /ASME SB 514, ASTM B407/ ASME SB 407
Manufacturing Type Seamless / ERW / Welded / Fabricated / CDW / CDS / DOM / CEW / 100% X Ray Welded
Thickness Range SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXH, SCH XXS, SCH XS
Standard SUS, JIS, AISI, ASTM, GB, DIN, EN
Value Added Services

Cutting

Beveling

Threading

Destructive and Non Destructive

Ultrasonic Testing

Draw & Expansion as per required Size & Length

END Plain End, Beveled End, Treaded Alloy 800H Pipe

 

Incoloy UNS N08800 Seamless Pipe Chemical Composition

Grade C Mn Si Fe S Cr Al-Ti Ni
Incoloy 800 Pipe min. 39.5 19.0 0.15 30.0
max. 0.1 1.5 1.0 0.015 23.0 0.60 35.0
Incoloy 800H Pipe min. 0.05 39.5 19.0 0.15 30.0
max. 0.1 1.5 1.0 0.015 23.0 0.60 35.0
Incoloy 800HT Pipe min. 0.06 39.5 19.0 0.85/0.25 30.0
max. 0.1 1.5 1.0 0.015 23.0 1.20/0.60 35.0

 

ASME SB407 UNS N08800 Incoloy Pipe Mechanical Properties

Grade Tensile Strength (MPa) min Yield Strength 0.2% Proof (MPa) min Elongation (% in 50mm) min Hardness
Rockwell B (HR B) max Brinell (HB) max
800-H-HT Psi – 75,000 , MPa – 520 Psi – 30,000 , MPa –205 30

 

Application of Incoloy 800H Welded Pipe

Ethylene furnace quench boilers

Hydrocarbon cracking

Valves, fittings and other components exposed to corrosive attack from 1100-1800° F

Industrial furnaces

Heat-treating equipment

Chemical and petrochemical processing

Super-heater and re-heaters in power plants

Pressure vessels

Heat exchangers

 

ASTM B407 Incoloy 800 Seamless Annealed Pipe Price List 

ASTM B407 Seamless Incoloy 800 Pipe, SCH40S 1/2, 21.3mm X 2.77mm LENGTH =1120 mm INR 3,400/ Kg
Pickled Annealed Cold Drawn Incoloy 800 Pipe INR 2,800/Kg

Contact us for free samples and quotes or email sales@gneestainless.com

 

Incoloy 800 Pipe Inspection & Test reports
Mill Test Certificates with all Incoloy 800 Pipe
EN 10204/3.1B, EN 10204 3.1 and EN 10204 3.2 Material Test Certificates (MTC)
Chemical Reports
Mechanical Reports
PMI Test Reports
Visual Inspection Reports
Third Party Inspection for Incoloy 800 Alloy Pipe
NABL Approved Lab Reports
Destructive Test Report
Non Destructive Test Reports
100% Radiography Test Report

 

GNEE provide Incoloy 800 Seamless and Welded Pipes for the Oil and Gas, Petrochemical and Power Industries. Incoloy pipes supplier in China. ASTM B407 Incoloy 800 Seamless pipe, Incoloy 800 Seamless tube, 1.4876 Incoloy Seamless pipe, 1.4876 Seamless tube, Incoloy seamless pipe and tube supplier, exporter.

Types of Incoloy 800 Pipe

info-799-426

Packaging and Marking:
Packaged in bales or laminated wooden crates, wrapped in plastic, and appropriately protected to ensure seaworthiness for transport, or as required.
Marking must comply with Specification A1016/A1016M. Marking must include information on whether the pipe is hot-finished or cold-finished, including but not limited to: standard, grade, size, heat number, and batch number.

Incoloy 800 Pipe

 

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