Hastelloy X Nickel Alloy Round Bar / UNS N06002 Bars Custom Cutting
in Length Alloy X Billet
Product Overview
Hastelloy X, also known as UNS N06002 or Alloy X, is a
nickel-chromium-iron-molybdenum alloy specifically designed for
extreme temperature and corrosive environments. This solid solution
strengthened nickel-base superalloy delivers exceptional oxidation
resistance and high-temperature strength, making it an ideal choice
for aerospace, industrial furnace, and chemical processing
applications. Our Hastelloy X round bars are manufactured to strict
quality standards and available for custom cutting to meet your
specific project requirements.
Our Hastelloy X round bars maintain excellent strength in oxidizing
atmospheres up to 1200°C (2200°F) and in reducing atmospheres up to
980°C (1800°F), with outstanding resistance to sulfidation,
carburization, and other high-temperature degradation processes.
The alloy exhibits good fabrication characteristics, including
weldability and formability, allowing for versatile manufacturing
possibilities across various industries.
Chemical Composition (Weight %)
The chemical composition of Hastelloy X is carefully balanced to
provide optimal performance in high-temperature environments:
| Element | Minimum (%) | Maximum (%) |
|---|
| Ni | Balance | Balance |
| Cr | 20.5 | 23.0 |
| Fe | 17.0 | 20.0 |
| Mo | 8.0 | 10.0 |
| Co | 0.5 | 2.5 |
| W | 0.2 | 1.0 |
| C | 0.05 | 0.15 |
| Mn | - | 1.0 |
| Si | - | 1.0 |
| P | - | 0.040 |
| S | - | 0.030 |
Table 1: Chemical composition of Hastelloy X round bars
Physical Properties
Hastelloy X possesses physical characteristics that make it
particularly suitable for high-temperature applications:
| Property | Value |
|---|
| Density | 8.28 g/cm³ |
| Melting Range | 1295-1381°C |
| Specific Heat | 372.6 J/kg·°C at 17°C |
| Thermal Conductivity | 13.38 W/m·°C at 100°C |
| Thermal Expansion | 12.1 × 10⁻⁶/°C (20-100°C) |
| Electrical Resistivity | 1.18 μΩ·m at 100°C |
Table 2: Physical properties of Hastelloy X
Mechanical Properties
Hastelloy X maintains excellent mechanical properties at both room
and elevated temperatures:
Room Temperature Mechanical Properties (Solution Annealed
Condition)
| Property | Value |
|---|
| Tensile Strength | ≥665 MPa |
| Yield Strength (0.2% Offset) | ≥240 MPa |
| Elongation | ≥35% |
Table 3: Typical mechanical properties of Hastelloy X round bars at
room temperature
Elevated Temperature Properties
Hastelloy X retains significant strength at elevated temperatures,
with tensile strength of approximately 310 MPa at 815°C, making it
suitable for high-stress applications in extreme environments .
Technical Specifications
Our Hastelloy X round bars are available in various specifications
to meet diverse industrial requirements:
| Specification | Details |
|---|
| Standard Diameter Range | 6mm to 500mm |
| Custom Length Cutting | Available per request |
| Standard Length | 0.5m to 30m |
| Available Forms | Round bars, billets, forgings |
| Manufacturing Process | VIM + ESR (Vacuum Induction Melting + ElectroSlag Remelting) |
| Heat Treatment | Solution annealed at 1175°C ±15°C, air cooled or faster |
| Surface Finish | Black, ground, turned, or polished |
Table 4: Technical specifications of Hastelloy X round bars
Production Process
Manufacturing Excellence
Our Hastelloy X round bars are produced using advanced
metallurgical processes including Vacuum Induction Melting (VIM) or
Vacuum Induction Melting plus Electroslag Remelting (VIM + ESR) to
ensure precise chemical composition control, reduced gas content,
and elimination of harmful impurities . This results in enhanced
purity and uniform microstructure throughout the material.
Hot Working
The hot working process for Hastelloy X involves heating the
material to 1170°C ±10°C for forging, with final forging
temperature not lower than 950°C . This controlled thermomechanical
processing ensures optimal grain structure and mechanical
properties in the final product.
Quality Assurance
All Hastelloy X round bars undergo rigorous testing including
ultrasonic inspection, dimensional accuracy checks, surface quality
assessment, mechanical property testing, and chemical composition
verification to guarantee compliance with international standards .
Applications
Hastelloy X round bars are specified for critical components across
multiple industries:
Aerospace Industry: Combustion chamber components, flame holders,
transition ducts, turbine casings, and afterburner parts for jet
engines
Industrial Gas Turbines: Burner cans, transition pieces, flame
tubes, nozzle rings, and structural components
Industrial Furnaces: Radiation tubes, furnace rolls, retorts,
internal supports, hot air ducts, and burner nozzles
Chemical Processing: High-temperature reactor components, heat
exchanger tubing, pyrolysis tubes, reformer tubes, and fixture
materials
Nuclear Power: Components for high-temperature gas-cooled nuclear
reactors
Fabrication Characteristics
Machining and Forming
Hastelloy X exhibits good machinability in the solution annealed
condition using conventional methods, though it requires more power
than machining stainless steels. The alloy can be cold formed using
standard techniques, with intermediate annealing recommended for
severe deformation .
Welding
Hastelloy X offers excellent welding characteristics and can be
readily joined using Gas Tungsten Arc Welding (GTAW/TIG), Gas Metal
Arc Welding (GMAW/MIG), and Shielded Metal Arc Welding (SMAW)
methods. For TIG welding, matching filler metals such as
HHastelloyX or HGH3113 welding wire are recommended .
Heat Treatment
Optimal properties are achieved through solution treatment at
1175°C ±15°C followed by rapid cooling . For stress relief after
machining or welding, heat treatment at 870°C ±10°C for 30-60
minutes with air cooling is recommended.
Packaging and Delivery
We offer flexible packaging options to ensure product integrity
during transportation and storage:
Standard packaging: Water-proofed bags or standardized wooden cases
Custom packaging available according to customer specifications
Inner packaging: Inert gas environment with vacuum aluminum foil
bags
Various quantity options from sample sizes (1kg) to full production
quantities
Why Choose Our Hastelloy X Round Bars?
Consistent Quality: Strict adherence to international standards
including ASTM B572, ensuring reliable performance in critical
applications
Custom Solutions: Available in diameters from 6mm to 500mm with
custom cutting to your specified lengths
Technical Expertise: Comprehensive support for material selection,
fabrication guidance, and application optimization
Competitive Pricing: Direct manufacturing relationships enable
cost-effective pricing without compromising quality
Traceability: Complete material traceability with certified mill
test reports for every shipment
Hastelloy X round bars represent an optimal solution for engineers
and designers working with high-temperature applications requiring
exceptional oxidation resistance, creep strength, and
fabricability. Contact our technical team to discuss how our
Hastelloy X round bars can meet your specific application
requirements.
