Incoloy® 800 Alloy Pipe (Ni-Fe-Cr Alloy) | Superior High-Temperature Oxidation & Carburization Resistance

✓ High-Temperature Stability: Maintains 450 MPa tensile strength at 700°C (1,292°F) with a protective Cr₂O₃ oxide layer, reducing scaling by 60% vs. 310S stainless steel.

✓ Carburization Resistance: Limits carbon penetration to **<0.1mm depth** after 1,000h in CH₄-rich environments at 650°C (1,202°F).

✓ Acid & Chloride Immunity: Resists sulfuric acid (up to 50% at 65°C), nitric acid, and chloride stress corrosion cracking (Cl-SCC).

✓ Precision Fabrication: Seamless/cold-drawn pipes with **±0.1mm wall thickness tolerance** and Ra ≤1.6μm surface finish for welding and bending.

Incoloy® 800 Alloy Pipe (Ni-Fe-Cr Alloy)

Engineered for petrochemical, power generation, and industrial furnace applications requiring exceptional resistance to oxidation, carburization, and thermal cycling, Incoloy® 800 alloy pipe combines a nickel-iron-chromium matrix (Ni-30–35%, Fe-39.5%, Cr-19–23%, Al-0.4%, Ti-0.4%) to deliver unmatched performance in high-temperature oxidizing and carburizing environments up to 815°C (1,500°F). Certified to ASTM B407, ASME SB-407, and NACE MR0175, this alloy outperforms 310S stainless steel and Inconel 600 in cyclic thermal applications, offering 2x the lifespan in ethylene cracking furnaces and steam methane reformers.

Sizes: OD 6mm–300mm (seamless) / OD 10mm–500mm (welded)
Wall Thickness: 1mm–40mm
Length: 1m–12m (standard) / custom-cut
Surface Finishes: Pickled, Grinded (Ra ≤0.8μm), Polished (Ra ≤0.4μm)
Mechanical Properties (Room Temp): Yield Strength ≥170 MPa | Tensile Strength ≥450 MPa | Elongation ≥30% | Hardness ≤150 HBW

Parameter Category	Value/Description
Material Standard	ASTM B407 (Seamless Pipe/Tube), ASTM B514 (Welded Pipe), AMS 5873 (Aerospace), EN 10095 (Europe)
Chemical Composition (%)	Ni 30.0–35.0, Cr 19.0–23.0, Fe (Balance), C ≤0.10, Mn ≤1.5, Si ≤1.0, Al 0.15–0.60, Ti 0.15–0.60, Cu ≤0.75, S ≤0.015
Tensile Strength (MPa)	≥500 (Annealed)
Yield Strength (MPa)	≥200 (Annealed)
Elongation (%)	≥30 (in 50mm gauge length)
High-Temperature Strength	– 600°C: Tensile Strength ≥300 MPa – 600°C: 100h Creep Rupture Strength ≥50 MPa
Hardness	Brinell (HBW): ≤200; Rockwell (HRB): ≤90
Density (g/cm³)	8.03
Melting Range (°C)	1350–1400
Thermal Conductivity (W/m·K)	11.7 (at 20°C)
Thermal Expansion (10⁻⁶/°C)	14.4 (20–600°C)
Electrical Resistivity (Ω·m)	1.05 × 10⁻⁶ (at 20°C)
Elastic Modulus (GPa)	190
Oxidation Resistance	Excellent resistance to oxidation and carburization up to 1100°C in air. Stable in sulfur-containing environments.
Corrosion Resistance	Resists chloride stress corrosion cracking (SCC), nitric acid, and alkaline solutions. Vulnerable to hydrochloric acid.
Heat Treatment	Solution Annealing: 980–1040°C (rapid cooling in water or air). No aging required.
Surface Finishes	Pickled & Passivated, Polished (Ra ≤0.8μm), Cold-Drawn, or Bright Annealed (BA).
Pipe Dimensions	– Outer Diameter (OD): 6mm–300mm – Wall Thickness: 1mm–30mm – Length: 3000mm–12000mm (customizable).
Key Applications	High-temperature heat exchangers, nuclear reactor coolant pipes, chemical processing pipelines, furnace radiant tubes, and oil/gas exhaust systems.

Incoloy® 800 Alloy Pipe (Ni-Fe-Cr Alloy) Applications

Industry	Critical Use Cases	Incoloy® 800 Pipe Advantage
Petrochemical	Ethylene cracking furnace tubes, pyrolysis coils	0.05mm/year carburization rate at 750°C (1,382°F).
Power Generation	Steam superheater tubes, boiler headers	Resists steam oxidation at 600°C (1,112°F) + 25 MPa pressure.
Nuclear	Reactor coolant pipes, heat exchanger tubing	Immune to intergranular attack and chloride SCC.
Heat Treatment	Annealing furnace retorts, radiant tubes	Withstands 10,000+ thermal cycles (20°C–800°C).

Incoloy® 800 Alloy Pipe (Ni-Fe-Cr Alloy) Product Packaging

Incoloy® 800 Alloy Pipe (Ni-Fe-Cr Alloy) (UNS N08810/N08825, ASTM B423/ASME SB-423 compliant) are engineered for extreme environments in chemical processing, oil & gas, and nuclear industries, offering exceptional resistance to sulfuric acid, chloride stress corrosion, and high-temperature oxidation (up to 1,100°C). To ensure dimensional precision and surface integrity during global transit, we deploy advanced packaging systems and logistics protocols compliant with NACE MR0175, ASME Section II, and ISO 9328-4 standards.

Why Choose Us

Where Precision Meets Partnership，25 years of focus on metal material science，Not only a supplier, but also your engineering consultant，Fast and zero compromise，Sustainable trust cycle。

Incoloy® 800 Alloy Pipe (Ni-Fe-Cr Alloy) Shipping

Sea transport

40HQ container (loading capacity 28 tons) / bulk carrier (LCL minimum 1 ton)

Air transport

reach major airports around the world within 7 days (DDP/DAP terms)

Land transport

door-to-door within China (qualification for dangerous goods transportation)

Our Services

We guarantee global door-to-door delivery within 7–15 business days via partnerships with DHL, Maersk, and UPS.

FAQ

Q1: How does Incoloy 800 differ from Incoloy 800H in pipe applications?

A: Incoloy 800H adds higher carbon content (0.05–0.10%) for enhanced creep resistance above 600°C, while standard 800 excels in cyclic thermal fatigue resistance.

Q2: What welding filler metals prevent intergranular corrosion?

A: Use ERNiCr-3 (TIG) or ENiCrFe-3 (SMAW) with interpass temperature <150°C (302°F) and post-weld anneal at 1,050°C (1,922°F) for 30 minutes.

Q3: Are pipes certified for nuclear reactor coolant systems?

Full compliance includes: