Incoloy® 800 Alloy Round Bar (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 Machinability: Hot/cold-finished bars with **±0.05mm diameter tolerance** and Ra ≤1.6μm surface finish for CNC machining.

Incoloy® 800 Alloy Round Bar (Ni-Fe-Cr Alloy)

Engineered for petrochemical, power generation, and industrial furnace applications demanding exceptional resistance to oxidation, carburization, and thermal fatigue, Incoloy® 800 alloy round bar combines a nickel-iron-chromium matrix (Ni-30–35%, Fe-39.5%, Cr-19–23%, Al-0.4%, Ti-0.4%) to deliver unmatched stability in high-temperature oxidizing and carburizing environments up to 815°C (1,500°F). Certified to ASTM B408, ASME SB-408, 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.

Diameter: 5mm–300mm (hot-rolled) / 3mm–150mm (cold-drawn)
Length: 1m–6m (standard) / custom-cut
Surface Finishes: Turned, Ground (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 B408 (Round Bar/Rod), 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	Hot-rolled, Turned, Ground, Polished (Ra ≤0.8μm), or Peeled.
Round Bar Dimensions	– Diameter: 5mm–300mm – Length: 1000mm–6000mm (customizable).
Key Applications	High-temperature valve shafts, furnace components, nuclear reactor control rods, chemical processing fasteners, and heat exchanger supports.

Incoloy® 800 Alloy Round Bar (Ni-Fe-Cr Alloy) Applications

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

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

Incoloy® 800 Alloy Round Bar (Ni-Fe-Cr Alloy) (UNS N08810/N08825, ASTM B408/ASME SB-408 compliant) are engineered for extreme environments in chemical processing, oil & gas, and nuclear industries, offering superior resistance to sulfuric acid, chlorides, 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 Round Bar (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?

A: Incoloy 800H adds a higher carbon content (0.05–0.10%) for enhanced creep resistance above 600°C (1,112°F), while standard 800 excels in cyclic thermal fatigue resistance.

Q2: What machining parameters prevent work hardening?

A: Use carbide tools with cutting speeds ≤30 m/min and coolant flow ≥5 L/min to maintain surface integrity.

Q3: Are bars certified for nuclear reactor components?

Full compliance includes: