Wuxi Nickel Alloy New Material Technology Co., Ltd
Wuxi Nickel Alloy New Material Technology Co., Ltd
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High-Temperature Resistant HASTELLOY S Rod for Aerospace Applications
HASTELLOY S rod (UNS N06635) is a high-performance nickel-chromium-molybdenum alloy renowned for its exceptional strength, thermal stability, and resistance to oxidation and corrosion in high-temperature environments. Developed primarily for aerospace applications, it is widely utilized in gas turbine engines, power generation, and chemical processing industries.
HASTELLOY S rod offers outstanding thermal stability and low thermal expansion, making it ideal for components subjected to severe thermal cycling. It maintains excellent oxidation resistance up to 2000°F (1093°C) and retains strength and ductility after prolonged exposure to temperatures ranging from 800°F to 1600°F (427°C to 871°C). This alloy is particularly suitable for applications requiring materials that can withstand severe cyclical heating conditions while maintaining structural integrity.
| Element | Composition (%) |
|---|---|
| Nickel (Ni) | Balance |
| Chromium (Cr) | 16 |
| Molybdenum (Mo) | 15 |
| Iron (Fe) | ≤3 |
| Cobalt (Co) | ≤2 |
| Tungsten (W) | ≤1 |
| Silicon (Si) | ≤0.4 |
| Manganese (Mn) | ≤0.5 |
| Carbon (C) | ≤0.02 |
| Aluminum (Al) | ≤0.25 |
| Boron (B) | ≤0.015 |
| Lanthanum (La) | ≤0.02 |
| Property | Value |
|---|---|
| Density | 8.75 g/cm³ |
| Melting Point | 1335–1380°C |
| Tensile Strength | 844 MPa |
| Yield Strength | 444 MPa |
| Elongation | 49% |
| Thermal Conductivity | 14.0 W/m·°C @ 200°C |
| Thermal Expansion | 12.8 × 10⁻⁶/°C (20–316°C) |
| Property | Value |
|---|---|
| Density | 8.75 g/cm³ |
| Melting Point | 1335–1380°C |
| Electrical Resistivity | 1.28a µohm-m |
| Thermal Conductivity | 14.0 W/m·°C @ 200°C |
| Specific Heat | 398 J/kg·°C @ 0°C |
| Thermal Diffusivity | 3.9 × 10⁻⁶ m²/s @ 100°C |
ASTM B622 – Seamless Nickel-Chromium-Molybdenum Alloy Pipes and Tubes
ASTM B619 – Welded Nickel-Chromium-Molybdenum Alloy Pipes and Tubes
ASTM B366 – Nickel Alloy Fittings
NACE MR0175/ISO 15156 – Materials for Use in H₂S-Containing Environments in Oil and Gas Production
Aerospace: Components in gas turbine engines, including seals and structural parts.
Chemical Processing: Equipment exposed to high temperatures and corrosive environments.
Power Generation: Parts in gas turbines and other high-temperature systems.
Marine: Components in seawater desalination plants and other marine applications.
Q1: What is the maximum operating temperature for HASTELLOY S rod?
A1: HASTELLOY S rod maintains excellent oxidation resistance up to 2000°F (1093°C), making it suitable for high-temperature applications.
Q2: Can HASTELLOY S rod be welded?
A2: Yes, HASTELLOY S rod can be welded using standard welding techniques, including gas tungsten arc welding (GTAW) and gas metal arc welding (GMAW).
Q3: What are the main industries that use HASTELLOY S rod?
A3: HASTELLOY S rod is widely used in aerospace, chemical processing, power generation, and marine industries due to its excellent high-temperature strength and corrosion resistance.