- ASTM B409 Incoloy 800H Round Bar Precision-Machined Alloy Rod for
Petrochemical & Power Sectors
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. |
ASTM B409 Incoloy 800H Round Bar Precision-Machined Alloy Rod for
Petrochemical & Power Sectors
In the petrochemical and power generation sectors, equipment
reliability under extreme conditions directly impacts operational
safety and productivity. High temperatures, corrosive media, and
sustained mechanical stress pose severe challenges to structural
materials, making the selection of high-performance alloys
critical. The ASTM B409-compliant Incoloy 800H round bar, a
precision-machined nickel-iron-chromium alloy rod, emerges as a
premier solution, delivering unmatched stability and durability in
harsh industrial environments.
Core Material Characteristics: The Foundation of Performance
Incoloy 800H (UNS N08810, W. Nr. 1.4958) features a face-centered
cubic lattice structure optimized through precise chemical
composition control and specialized heat treatment. Its unique
formulation balances nickel, chromium, and iron with trace elements
to achieve superior performance metrics that outperform
conventional stainless steels and even other nickel-based alloys.
The chemical composition, strictly regulated by ASTM B409, is
fundamental to its properties. Nickel (30-35%) enhances resistance
to stress corrosion cracking in aqueous environments, while
chromium (19-23%) provides exceptional oxidation and pitting
corrosion protection. The controlled carbon content (0.05-0.10%)
and balanced titanium-to-carbon ratio improve structural stability
and prevent sensitization, critical for long-term service in
high-heat conditions. Trace additions of aluminum and titanium
(each 0.15-0.60%, with a combined minimum of 0.85%) further enhance
high-temperature strength and creep resistance.
Key Physical & Mechanical Properties (ASTM B409 Compliance)
| Property Category | Specific Parameter | Value |
|---|
| Physical Properties | Density | 8.0 g/cm³ (0.287 lb/in³) |
| Melting Range | 1350-1400°C (2475-2525°F) |
| Room Temperature Mechanics | Tensile Strength (Rm) | ≥450 N/mm² (65 ksi) |
| Yield Strength (Rp0.2) | ≥180 N/mm² (26 ksi) |
| Elongation (A5%) | ≥35% |
| Brinell Hardness (HB) | ≤210 |
| High-Temperature Mechanics (1400°F/760°C) | Tensile Strength | ≥450 MPa (65 ksi) |
| Yield Strength | ≥170 MPa (25 ksi) |
| 10,000-Hour Creep Rupture Strength | 7.3 ksi |
Data compiled from ASTM B409 specifications and material
performance testing
Precision Machining: Engineering for Critical Applications
Beyond inherent material excellence, our Incoloy 800H round bars
undergo advanced precision machining to meet the tight tolerances
required in petrochemical and power equipment. We adhere to ASTM
B409’s dimensional standards while implementing additional process
controls:
- Dimensional Accuracy: Diameter tolerances as tight as ±0.005mm and
straightness within 0.02mm/m, ensuring seamless integration into
high-precision assemblies like heat exchanger tubesheets and
reactor internals.
- Surface Finish: Precision grinding achieves Ra 0.8μm or better,
reducing corrosion initiation points and facilitating secure
welding and sealing.
- Heat Treatment Optimization: Post-machining solution annealing at
1100°C+ followed by controlled cooling eliminates machining
stresses and refines the grain structure (ASTM 5 or coarser),
maximizing creep resistance.
- Quality Validation: 100% dimensional inspection, ultrasonic testing
for internal defects, and chemical composition verification via
spectrometry ensure compliance with ASTM B409 and customer
specifications.
Application Advantages in Petrochemical & Power Sectors
The unique combination of material properties and precision
machining makes these alloy rods indispensable in two of the most
demanding industrial sectors:
Petrochemical Industry
In oil refining, ethylene production, and chemical processing,
equipment faces aggressive media (acids, chlorides, hydrogen) and
temperatures up to 900°C. Incoloy 800H round bars excel in:
- Ethylene Cracking Furnaces: Used for radiant coil supports and 急冷锅炉
tubes, resisting carburization and thermal cycling stresses.
- Hydrogenation Reactors: Withstands high-pressure hydrogen
environments without embrittlement, outperforming Inconel 600 in
stress corrosion resistance.
- Acid Processing Equipment: Provides superior corrosion resistance
to nitric and organic acids compared to standard austenitic
stainless steels.
Power Generation
Fossil fuel, nuclear, and concentrated solar power plants rely on
materials that maintain integrity under prolonged high-temperature
operation:
- Nuclear Power: Used in steam generators and primary coolant system
components, compliant with ASME SB-409 for nuclear-grade materials.
- Fossil Fuel Plants: Serves as superheater tube supports and turbine
bypass system components, withstanding 1100°C peak temperatures and
cyclic loading.
- Renewable Energy: Deployed in solar thermal systems’ heat transfer
loops, offering stable performance in 700-900°C thermal storage
environments.
Compliance & Quality Assurance
Our ASTM B409 Incoloy 800H round bars meet global industry
standards, including ASME SB-409, EN 10216-5, and DIN 17459,
ensuring compatibility with international project requirements.
Each batch is accompanied by a comprehensive mill test report (MTR)
documenting:
- Chemical composition verification against ASTM B409 limits
- Mechanical properties at room and elevated temperatures
- Heat treatment records and grain size analysis
- Non-destructive testing results (ultrasonic, magnetic particle)
Why Choose Our Precision-Machined Incoloy 800H Round Bars?
- ASTM B409 Compliance: Guaranteed adherence to stringent material
and performance standards, eliminating supply chain risks.
- Long-Term Cost Efficiency: Extended service life (typically 2-3x
longer than 316 stainless steel in high-heat environments) reduces
maintenance and replacement costs.
- Application Expertise: Technical support tailored to petrochemical
and power sector needs, including welding guidance (recommending ER
NiCr-3 or ERNiCrCoMo-1 fillers) and heat treatment consultation.
- Customization: Available in diameters from 10mm to 200mm, with
cut-to-length options and specialized surface treatments per
customer requirements.
For critical components in extreme industrial environments, the
ASTM B409 Incoloy 800H precision-machined round bar delivers
unmatched reliability. Backed by rigorous quality control and
application-specific engineering, it is the material of choice for
petrochemical and power companies committed to operational
excellence.
