If you work with extreme high temperatures—like in aerospace engines or industrial furnaces—you need a material that stays strong and resists corrosion.UNS N06200 Hastelloy X is a nickel-based superalloy built for this. Equilibra excepcional resistência ao calor com durabilidade, tornando-o a melhor escolha para tarefas exigentes. Este guia detalha suas principais propriedades, usos no mundo real, and how it compares to other materials—so you can pick the right solution for your project.
1. Material Properties of UNS N06200 Hastelloy X
Hastelloy X’s performance comes from its carefully blended composition and robust characteristics. Let’s explore each property clearly.
1.1 Composição Química
Every element works together to boost heat resistance and strength. Below is its typical composition (by weight):
| Elemento | Faixa de conteúdo (%) | Key Role |
|---|---|---|
| Níquel (Em) | 47–50 | Base metal—provides high-temperature stability and ductility |
| Cromo (Cr) | 18–22 | Enhances oxidation resistance (critical for furnace and engine parts) |
| Molybdenum (Mo) | 8–10 | Boosts strength and corrosion resistance in high-heat environments |
| Ferro (Fé) | 17–20 | Adds structural strength and reduces material cost |
| Cobalt (Co) | 0.5–2.5 | Improves creep resistance (stops deformation under long-term heat) |
| Tungsten (C) | 0.2–1.0 | Enhances high-temperature hardness and wear resistance |
| Carbono (C) | 0.05–0.15 | Strengthens the alloy without sacrificing ductility |
| Manganês (Mn) | Max 1.0 | Aids in manufacturing (por exemplo, welding and casting) |
| Silício (E) | Max 1.0 | Reduces oxidation at extreme temperatures |
| Enxofre (S) | Max 0.015 | Kept low to prevent brittleness in high-heat conditions |
| Alumínio (Al) | Max 0.5 | Enhances oxidation resistance (works with chromium) |
| Titânio (De) | Max 0.15 | Stabilizes the alloy and prevents intergranular corrosion |
1.2 Propriedades Físicas
These traits make Hastelloy X ideal for high-temperature design:
- Densidade: 8.3 g/cm³ (heavier than aluminum, lighter than some other superalloys)
- Ponto de fusão: 1290–1350°C (2350–2460°F) – handles extreme heat in engines and furnaces
- Condutividade Térmica: 13.5 C/(m·K) a 20ºC (68°F); 23.0 C/(m·K) at 800°C – efficient heat transfer
- Thermal Expansion Coefficient: 13.5 μm/(m·K) (20–100ºC); 17.8 μm/(m·K) (20–800ºC) – manageable expansion in heat cycles
- Electrical Resistivity: 130 Ω·mm²/m at 20°C – suitable for electrical components in high-heat areas
- Propriedades Magnéticas: Non-magnetic – great for aerospace and electronic equipment where magnetism is a problem
1.3 Propriedades Mecânicas
Hastelloy X stays strong even at high temperatures. All values below are for the annealed (tratado termicamente) version:
| Propriedade | Valor (Room Temperature) | Value at 800°C |
|---|---|---|
| Resistência à tracção | Min 700 MPa (102 ksi) | 420 MPa (61 ksi) |
| Força de rendimento | Min 350 MPa (51 ksi) | 280 MPa (41 ksi) |
| Alongamento | Min 30% (em 50 milímetros) | 35% (em 50 milímetros) |
| Dureza | Max 220 HB (Brinell) | N / D |
| Resistência à fadiga | 280 MPa (10⁷ cycles) | 180 MPa (10⁷ cycles) |
| Resistência à fluência | Maintains strength up to 1090°C (2000°F) | – |
1.4 Outras propriedades
- Resistência à corrosão: Excellent in oxidizing environments (por exemplo, ar, vapor) and mild acids – outperforms stainless steel at high temps.
- Oxidation Resistance: Resists scaling in air up to 1090°C (2000°F) for long periods – ideal for furnace liners.
- Stress Corrosion Cracking (SCC) Resistance: Resists SCC in chloride-rich solutions (a common issue for 316 aço inoxidável).
- Pitting Resistance: Good resistance to pitting in salty or acidic brines (suitable for marine and chemical applications).
- Hot/Cold Working Properties: Easy to hot forge (at 1150–1250°C) – cold working is possible but may require annealing to restore ductility.
2. Applications of UNS N06200 Hastelloy X
Hastelloy X’s high-temperature performance makes it perfect for tough industries. Aqui estão seus usos mais comuns, com exemplos do mundo real:
2.1 Componentes Aeroespaciais
- Use Case: Um EUA. aerospace company uses Hastelloy X for jet engine exhaust systems. The parts handle 950°C temperatures—they’ve lasted 8 anos, comparado com 4 years for Inconel 625 peças.
- Other Uses: Combustion chambers, lâminas de turbina, and afterburner components.
2.2 Heat Treatment Equipment
- Use Case: A metal processing plant in Germany uses Hastelloy X for furnace heating elements. The elements operate at 1000°C daily—they’ve run for 5 anos, contra. 2 years for stainless steel elements.
- Other Uses: Furnace liners, annealing baskets, and heat exchanger tubes.
2.3 Oil and Gas Industry
- Use Case: An offshore oil rig in the North Sea uses Hastelloy X for wellhead valves. The alloy resists high-pressure natural gas and 600°C temperatures, reduzindo custos de manutenção por 35%.
2.4 Chemical Processing Equipment
- Use Case: A chemical plant in China uses Hastelloy X for high-temperature reactor vessels. The vessels handle 750°C processes—they’ve lasted 6 anos, comparado com 3 years for carbon steel vessels.
2.5 Nuclear Industry
- Use Case: A nuclear power plant in France uses Hastelloy X for coolant system parts. The alloy resists corrosion from radioactive coolants, ensuring long-term safety.
3. Manufacturing Techniques for UNS N06200 Hastelloy X
To get the best performance from Hastelloy X, manufacturers use these specialized methods:
- Fundição: Investment casting (using a wax mold) is ideal for complex shapes (por exemplo, engine combustion chambers). The alloy’s low sulfur content prevents defects during casting.
- Forjamento: Hot forging (at 1150–1250°C) shapes the alloy into strong parts like turbine blades. Forging improves grain structure, boosting high-temperature strength.
- Soldagem: Gas Tungsten Arc Welding (GTAW) is recommended. Use matching filler metals (por exemplo, ERNiCrMo-10) to maintain corrosion resistance. Pre-weld cleaning (to remove oils) is critical for strong welds.
- Usinagem: Use ferramentas de metal duro (they stay sharp longer). Add coolant (por exemplo, mineral oil) to prevent overheating—Hastelloy X can work-harden if cut too quickly.
- Tratamento térmico:
- Recozimento: Heat to 1050–1100°C, cool rapidly (air or water) – softens the alloy for forming and restores ductility.
- Stress Relieving: Heat to 760–815°C, cool slowly – reduces internal stresses after welding or cold working.
- Tratamento de superfície: Passivação (using nitric acid) enhances pitting resistance. No painting is needed— the alloy’s natural surface resists rust in most environments.
4. Estudo de caso: Hastelloy X in an Aerospace Combustion Chamber
An aerospace manufacturer in the UK needed to upgrade combustion chambers for a new jet engine. The old chambers (made of Inconel 625) failed after 3000 flight hours due to heat fatigue at 980°C.
They switched to Hastelloy X chambers. Here’s the result:
- Lifespan: The chambers have lasted 6000 flight hours with no signs of wear.
- Economia de custos: Replacement costs dropped by 50% (fewer frequent part changes).
- Desempenho: The alloy’s heat resistance improved engine efficiency by 8%, reduzindo o consumo de combustível.
This case proves why Hastelloy X is the top choice for high-temperature aerospace parts.
5. Comparative with Other Materials
How does UNS N06200 Hastelloy X stack up against other common materials? The table below compares key properties:
| Material | Max Service Temp (°C) | Resistência à tracção (MPa) | Resistência à corrosão (High Temps) | Custo (Relative) |
|---|---|---|---|---|
| Hastelloy X | 1090 | 700 | Excelente | Alto |
| Aço inoxidável 316 | 870 | 515 | Bom | Baixo |
| Titanium Alloy Ti-6Al-4V | 400 | 860 | Muito bom | Muito alto |
| Inconel 625 | 980 | 930 | Excelente | Alto |
| Hastelloy C22 | 650 | 690 | Excelente (ácidos) | Alto |
| Monel 400 | 480 | 550 | Bom (seawater) | Médio |
| Aço carbono | 425 | 400 | Pobre | Muito baixo |
Key Takeaways:
- Hastelloy X outperforms stainless steel and Monel 400 in high-temperature resistance.
- It’s more affordable than titanium alloys and offers better heat resistance than Hastelloy C22.
- Inconel 625 has higher tensile strength, but Hastelloy X works at higher temperatures (up to 1090°C).
Yigu Technology’s Perspective
Na tecnologia Yigu, we recommend UNS N06200 Hastelloy X for clients in aerospace, tratamento térmico, and oil industries. Its exceptional high-temperature strength and corrosion resistance make it a reliable, long-lasting solution. Our team provides custom machining and heat treatment for Hastelloy X components, ensuring they meet strict industry standards. For projects needing durability in extreme heat, Hastelloy X delivers unmatched value.
Perguntas frequentes
1. Can UNS N06200 Hastelloy X handle temperatures above 1000°C?
Sim! It’s designed for this—it maintains strength up to 1090°C (2000°F) in air. This makes it ideal for jet engine parts, furnace liners, and other high-heat applications.
2. Is Hastelloy X suitable for marine environments?
Absolutamente. Its goodpitting resistance and corrosion protection in salty water make it ideal for marine parts like offshore wellhead valves—outperforming stainless steel in long-term use.
3. What’s the typical lifespan of Hastelloy X parts in aerospace applications?
In aerospace components (por exemplo, jet engine exhausts), Hastelloy X parts last 6–10 years or 6000+ flight hours—2x longer than Inconel 625 peças. Proper maintenance (por exemplo, recozimento) can extend this lifespan even further.