Incoloy 800 / 800H / 800HT Round Bar Hot Rolled Black Surface
Custom Cutting Any Length
Products Specification
Standard | AISI, ASTM, BS, DIN, GB, JIS |
Grade | Monel series: 400 K500
Inconel series: 600 601 625 718 725
Incoloy series: 800 800H 825 925
Hastelloy series: B,B2,B3,C,C-276,C-4,C-22
Pure: Ni200, Ni201 |
Specifications | Round bar | Diameter:4~300mm |
Flat bar | Thickness | 1.0~100mm |
Width | 1~1500mm |
Square bar | Size: 4*4-100*100mm |
Length | 2m, 5.8m, 6m, or as required. |
Surface | Black, peeled, polishing, bright, sand blast, hair line, etc. |
Price Term | Ex-work, FOB, CFR, CIF, etc. |
Delivery Time | Standard size is in stock,prompt delivery or as order's quantity. |
Incoloy 800 / 800H / 800HT Round Bar Hot Rolled Black Surface
Custom Cutting Any Length
Incoloy 800, 800H, and 800HT round bars represent a family of
high-performance nickel-iron-chromium alloys engineered for
extreme-temperature applications. Our hot-rolled black surface
round bars combine robust mechanical properties with customizable
sizing, making them the preferred choice for industries requiring
reliability in harsh environments. Whether for chemical processing,
power generation, or petrochemical equipment, these alloys deliver
unmatched stability and corrosion resistance.
Core Alloy Overview: 800 vs. 800H vs. 800HT
While all three alloys share a nickel-chromium-iron base, precise
variations in chemical composition distinguish their performance
capabilities, particularly in high-temperature scenarios. The
controlled addition of carbon, aluminum, and titanium tailors their
strength and creep resistance for specific operating conditions.
Chemical Composition Comparison (%)
| Element | Incoloy 800 (UNS N08800) | Incoloy 800H (UNS N08810) | Incoloy 800HT (UNS N08811) |
|---|
| Nickel (Ni) | 30.0 – 35.0 | 30.0 – 35.0 | 30.0 – 35.0 |
| Chromium (Cr) | 19.0 – 23.0 | 19.0 – 23.0 | 19.0 – 23.0 |
| Iron (Fe) | Min. 39.5 | Min. 39.5 | Min. 39.5 |
| Carbon (C) | Max. 0.10 | 0.05 – 0.10 | 0.05 – 0.10 |
| Aluminum (Al) | 0.15 – 0.60 | 0.15 – 0.60 | 0.15 – 0.60 |
| Titanium (Ti) | 0.15 – 0.60 | 0.15 – 0.60 | 0.25 – 0.60 |
| Copper (Cu) | Max. 0.75 | Max. 0.75 | Max. 0.75 |
Key Mechanical Properties
The hot-rolling process enhances the alloys’ structural integrity,
while their chemical makeup ensures performance across temperature
ranges. Below are typical mechanical properties for annealed round
bars:
| Property | Incoloy 800 | Incoloy 800H | Incoloy 800HT |
|---|
| Tensile Strength (MPa) | 500 – 650 | 520 – 690 | 600 – 800 |
| Yield Strength (MPa) | 200 – 350 | 210 – 400 | 220 – 380 |
| Elongation (%) | Min. 30 | Min. 30 | Min. 30 |
| Hardness (HRC) | ≤ 28 | ≤ 30 | ≤ 30 |
| 1000h Creep Strength at 700°C (MPa) | N/A | 120 | 150 |
Product Specifications: Hot Rolled Black Surface
Our Incoloy 800/800H/800HT round bars feature a hot-rolled black
surface—an industrial finish formed during the rolling process that
retains the alloy’s natural oxide layer, providing initial
corrosion protection. This finish is ideal for applications where a
rough surface is acceptable or will be further processed (e.g.,
machining, welding).
| Specification Item | Details |
|---|
| Manufacturing Process | Hot rolling (1100°C – 1200°C) |
| Surface Finish | Hot-rolled black (mill scale, no additional polishing) |
| Diameter Range | 5mm – 500mm |
| Length Options | Standard: up to 12 meters; Custom: any length (precision cutting) |
| Tolerances | Diameter: ±0.5mm (for ≤50mm); ±1% (for >50mm); Length: ±2mm |
| Certifications | ASTM/ASME SB 408, NACE MR0175, EN 10204 3.1B |
| Heat Treatment | Annealed at min. 1149°C for grain refinement (ASTM 5 or coarser) |
Performance Advantages
These alloys excel in environments where standard stainless steels
fail, offering four key benefits:
High-Temperature Resilience: Incoloy 800 performs reliably up to
815°C, while 800H/HT extend this capability to 1000°C, retaining
strength and resisting oxidation and carburization . 800HT’s higher
titanium content further boosts creep resistance for long-term
high-heat service .
Corrosion Resistance: The chromium-nickel matrix provides
protection against oxidizing/reducing environments, including
nitric acid, steam, and industrial gases—critical for chemical and
nuclear applications .
Fabrication Versatility: Despite limited cold-working capacity, the
alloys offer good weldability with matching filler metals, and
their hot-rolled form accepts machining, forging, and heat
treatment .
Customization Flexibility: Precision cutting to any length
eliminates material waste, supporting projects from small-scale
prototypes to large industrial installations.
Industry Applications
Each alloy variant targets specific industrial needs based on
temperature and stress requirements:
Incoloy 800: Ideal for moderate-temperature corrosion resistance in
heat exchangers, nuclear steam generator tubing, and furnace
muffles . Its balanced composition suits chemical processing
equipment handling mixed oxidizing/reducing media.
Incoloy 800H: Preferred for high-temperature components like
petrochemical process heaters, ethylene furnace quench boilers, and
gasification systems . Controlled carbon content enhances strength
without sacrificing ductility.
Incoloy 800HT: Excels in extreme heat applications such as turbine
components, thermal processing equipment, and 700°C+ industrial
furnaces. Its superior creep strength ensures longevity in 10,000+
hour service cycles .
Why Choose Our Round Bars?
- Quality Assurance: All bars meet ASTM/ASME standards and undergo
material testing (chemical analysis, tensile strength, hardness)
with traceable certificates.
- Customization: On-demand length cutting reduces installation time
and material costs.
- Application Expertise: Our team helps select the right alloy
variant based on operating temperature, corrosion environment, and
mechanical loads.
- Reliable Supply: Consistent inventory of diameters 5mm–500mm
ensures quick turnaround for urgent projects.
Whether for energy infrastructure, chemical processing, or advanced
manufacturing, our Incoloy 800/800H/800HT hot-rolled round bars
deliver the performance and flexibility to meet your most demanding
requirements.
