ASTM EN DIN GB JIS Standard Hastelloy X Round Bar with High-Temperature Strength and Corrosion Resistance
Hastelloy X (UNS N06002) is a nickel-chromium-iron-molybdenum alloy recognized as one of the most versatile solid-solution strengthened superalloys available globally. This alloy maintains exceptional oxidation resistance at temperatures up to 1200°C and offers outstanding high-temperature strength and stress-rupture properties above 790°C. It is particularly valued for its excellent resistance to carburizing and nitriding atmospheres, making it a preferred material for extreme environment applications across aerospace, industrial heating, and power generation industries.
The chemical composition of Hastelloy X is carefully balanced to deliver its signature high-temperature performance, creating a robust austenitic matrix that maintains structural integrity under thermal stress.
| Element | Minimum (%) | Maximum (%) |
|---|---|---|
| Nickel (Ni) | Balance | Balance |
| Chromium (Cr) | 20.5 | 23.0 |
| Iron (Fe) | 17.0 | 20.0 |
| Molybdenum (Mo) | 8.0 | 10.0 |
| Cobalt (Co) | 0.5 | 2.5 |
| Tungsten (W) | 0.2 | 1.0 |
| Carbon (C) | 0.05 | 0.15 |
| Manganese (Mn) | - | 1.0 |
| Silicon (Si) | - | 1.0 |
| Phosphorus (P) | - | 0.025 |
| Sulfur (S) | - | 0.015 |
| Boron (B) | - | 0.01 |
| Aluminum (Al) | - | 0.50 |
| Titanium (Ti) | - | 0.15 |
| Copper (Cu) | - | 0.50 |
| Property | Value | Condition |
|---|---|---|
| Density | 8.28 g/cm³ | At room temperature |
| Melting Point | 1295-1381°C | Solidus-Liquidus |
| Thermal Conductivity | 13.38 W/m*°C | At room temperature |
| Hardness | ≤241 HBS | Solution annealed |
| Elastic Modulus | 142-199 GPa | At room temperature |
| Temperature | Tensile Strength (MPa) | Yield Strength (0.2% Offset, MPa) | Elongation (%) |
|---|---|---|---|
| Room Temperature | ≥665 | ≥240 | ≥35 |
| 800°C | ~380 | ~195 | ~40 |
| 900°C | ~240 | ~145 | ~45 |
| Standard Type | Standard Code | Description |
|---|---|---|
| ASTM Standards | ASTM B572 | Specification for Rod and Bar (UNS N06002) |
| ASTM Standards | ASTM B435 | Specification for Plate, Sheet, and Strip |
| ASTM Standards | ASTM B622 | Specification for Seamless Pipe and Tube |
| EN/DIN Standards | DIN 2.4665 | German Material Designation |
| EN/DIN Standards | DIN 17742 | Specification for Nickel Alloy Rod |
| Chinese Standards | GB/T 15008 | Corrosion-Resistant Alloy Bar |
| Chinese Standards | GB/T 15007 | Designation as NS3102/GH4090 |
| Japanese Standards | JIS H4551 | Nickel-Chromium Alloy Bars |
| Aerospace Standards | AMS 5754 | Forging Specification |
| Aerospace Standards | AMS 5536 | Plate, Sheet, and Strip |
- Melting Practice: High-quality Hastelloy X is produced using Vacuum Induction Melting (VIM) followed by Electroslag Remelting (ESR) or Vacuum Arc Remelting (VAR)
- Hot Working: Ingots are forged or hot-rolled at 1150°C to 1000°C into round bars with controlled deformation processes
- Heat Treatment: Solution annealing at 1150°C to 1180°C followed by rapid cooling for optimal microstructure
- Surface Finishing: Turning and polishing for bright bars to achieve superior surface finish with precise dimensional tolerances
- Exceptional high-temperature strength up to 1200°C with impressive creep resistance
- Outstanding oxidation resistance in both oxidizing and reducing environments
- Excellent corrosion resistance to hot sulfur-bearing gases, carburizing atmospheres, and combustion products
- Good fabrication characteristics with excellent weldability using common techniques
- Aerospace Industry: Jet engine combustion chambers, flame holders, afterburner components
- Industrial Gas Turbines: Combustion liners, transition ducts, nozzle rings
- Heat Treatment Equipment: Radiation tubes, retorts, muffles, furnace rolls
- Power Generation: Nuclear reactor components, superheater supports, boiler components
- Chemical Processing: Pyrolysis tubes, reformer components, high-temperature reactors
When sourcing Hastelloy X round bars, work with qualified suppliers who provide full material traceability, including chemical certification and heat treatment records, to ensure compliance with required specifications and end-use application requirements.
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