Alloy X Nickel Sheet, Coil, Bar & Plate - AMS 5536, 5754, UNS N06002
Hastelloy® X (UNS N06002) is a high‑temperature, corrosion‑resistant, nickel‑based alloy strengthened through solid‑solution hardening. It is widely recognized for its outstanding oxidation resistance up to 2200°F (1204°C) and its ability to maintain exceptional strength at elevated temperatures, making it one of the most reliable materials for extreme thermal environments. The alloy also provides excellent carburization and nitriding resistance, along with strong mechanical stability in oxidizing, reducing, and neutral furnace atmospheres. Its chemistry, containing chromium, molybdenum, iron, and tungsten, gives it a superior combination of fabricability, weldability, and machinability, even after prolonged exposure to heat.
United Performance Metals stocks Alloy X in a full range of product forms, including coil and sheet (0.020″–0.125″), plate (0.250″–3.000″), bar (0.250″–6.500″), and precision reroll strip (0.0008″–0.015″). Its robust performance in jet engines, gas turbines, chemical processing systems, petrochemical environments, and industrial furnace applications makes it a top choice for demanding high‑temperature components. Alloy X is also known for its resistance to stress‑corrosion cracking in petrochemical applications, further expanding its versatility across harsh industrial environments.
- Inventory & Specs
- Chemical Composition
- Physical Properties
- Mechanical Properties
- Datasheet
- Additional Info
- FAQs
Inventory Size Ranges for Alloy X
| Type | Thickness | AMS Standards | ASTM | UNS | Get a Quote |
|---|---|---|---|---|---|
| Coil | 0.020" - 0.125" | AMS 5536 | ASTM B 435 | UNS N06002 | Get a Quote |
| Sheet | 0.020" - 0.125" | AMS 5536 | ASTM B 435 | UNS N06002 | Get a Quote |
| Plate | 0.250" - 3.000" | AMS 5536 | ASTM B 435 | UNS N06002 | Get a Quote |
| Bar | 0.250" - 0.500" | AMS 5754 | ASTM B 572 | Get a Quote | |
| Precision Reroll Strip | 0.0008" - 0.015" | Get a Quote |
Advanced Inventory Size Ranges for Alloy X
| Type | Size Range | Specifications | Get a Quote |
|---|---|---|---|
| Powder | 15um - 106um | AMS 7008 | Get a Quote |
Characteristics of Alloy X
Alloy X offers an exceptional combination of high‑temperature strength, oxidation resistance, and corrosion stability, performing reliably in oxidizing, reducing, and neutral atmospheres up to 2200°F (1204°C). It maintains high strength to 1500°F (816°C) and develops a tenacious, non‑spalling oxide film that protects the alloy during prolonged exposure to extreme heat. Alloy X is non‑magnetic, resists carburization and nitriding, and has proven durability in jet engine, furnace, petrochemical, and chemical‑processing systems. These characteristics make it one of the most versatile and dependable high‑temperature nickel‑based alloys available.
Working with Alloy X
Alloy X offers excellent formability, weldability, and machinability compared to other high‑temperature nickel alloys, making it easy to fabricate into complex components. It can be cold‑rolled to various tempers and is not hardenable by heat treatment, relying instead on solid‑solution strengthening and work hardening for mechanical properties. The alloy welds readily using TIG, MIG, and resistance‑welding methods, and, like many nickel alloys, requires machining practices that use rigid setups, sharp tooling, and controlled cutting forces due to its high strength at machining temperatures. Alloy X maintains good ductility even after exposure to 1600°F, supporting reliable performance in severe thermal‑cycling environments.
Other industry standards we comply with:
- ASME SB 435
- EN 2.4665
- B50A249C
- B50A436
- B50A463
- PWA-LCS
- GE Aircraft Engine (GT193)
- GE Aviation S-SPEC-35 AeDMS S-400
- RR SABRe Edition 2
- DFARS Compliant
Common Trade Names
- Inconel HX® Special Metals
- Hastelloy X® Haynes International
- ATI HX ™ Allegheny Technologies
- Alloy-X
Industry Applications for Alloy X
- Jet Engine Components
- Afterburners
- Tailpipes
- Gas Turbine Operations
- Petro-Chemical
- Structural Components
- Industrial Furnace
- Flash Drier Components
Chemical Composition
| Element | Min | Max | |
|---|---|---|---|
| C | Carbon | 0.05 | 0.15 |
| Mn | Manganese | - | 1.00 |
| P | Phosphorus | - | 0.040 |
| S | Sulfur | - | 0.030 |
| Si | Silicon | - | 1.00 |
| Cr | Chromium | 20.50 | 23.00 |
| Ni | Nickel | - | Balance |
| Mo | Molybdenum | 8.00 | 10.00 |
| Ti | Titanium | - | 0.15 |
| Al | Aluminum | - | 0.50 |
| Co | Cobalt | 0.50 | 2.50 |
| B | Boron | - | 0.01 |
| Cu | Copper | - | 0.50 |
| W | Tungsten | 0.20 | 1.00 |
| Fe | Iron | 17.00 | 20.00 |
Physical Properties
| Property | Value |
|---|---|
| Density | 0.297 lb/in3 (8.22 g/cm3 ) |
| Specific Gravity | 8.22 |
| Melting Range | 2300 - 2470°F (1260 - 1355°C) |
| Magnetic Permeability | < 1.002 |
| Temperature Range | Coefficients | ||
|---|---|---|---|
| °C | °F | W/m·K | Btu/(hr/ft²/in/°F) |
| 21 | 70 | 9.1 | 5.23 |
| 93 | 200 | 11.0 | 6.33 |
| 260 | 500 | 14.1 | 8.17 |
| 593 | 1100 | 20.8 | 12.0 |
| 704 | 1300 | 22.9 | 13.2 |
| 816 | 1500 | 25.0 | 14.5 |
| 927 | 1700 | 27.2 | 15.7 |
| Temperature | microhm-cm | |
|---|---|---|
| °C | °F | |
| 21 | 70 | 115.8 |
| 200 | 392 | 120 |
| 400 | 752 | 123 |
| 500 | 1112 | 127 |
| 800 | 1472 | 128 |
| 1000 | 1832 | 129 |
Mechanical Properties
| Temperature Range | 0.2% Yield Strength | Ultimate Tensile Strength | Elongation Percent | |||
|---|---|---|---|---|---|---|
| °C | °F | psi | MPa | psi | MPa | |
| -321 | -196 | - | - | 150,200 | 1035 | 46 |
| -108 | -78 | - | - | 118,800 | 819 | 51 |
| 72 | 22 | 47,000 | 324 | 104,500 | 720 | 46 |
| 400 | 204 | 48,700 | 336 | 103,400 | 713 | 41 |
| 600 | 316 | 42,600 | 294 | 100,200 | 691 | 40 |
| 800 | 427 | 43,700 | 301 | 99,700 | 687 | 44 |
| 1000 | 538 | 41,500 | 286 | 94,000 | 648 | 45 |
| 1200 | 649 | 39,500 | 272 | 83,000 | 472 | 37 |
| 1400 | 760 | 37,800 | 261 | 63,100 | 435 | 37 |
| 1600 | 871 | 25,700 | 177 | 36,500 | 252 | 51 |
| 1800 | 982 | 16,000 | 110 | 22,500 | 155 | 45 |
| 2000 | 1093 | 8,000 | 55 | 13,000 | 90 | 40 |
| 2200 | 1204 | 3,700 | 26 | 5,400 | 37 | 31 |
Datasheet
Additional Info
A Brief History of Alloy X
Hastelloy® X (Alloy X, UNS N06002) emerged as industry demand grew for alloys that could deliver exceptional oxidation resistance and high strength under prolonged exposure to extreme temperatures in jet engines, industrial furnaces, and chemical process equipment. Developed as a nickel‑chromium‑iron‑molybdenum solid‑solution strengthened alloy, Alloy X was tailored to resist oxidizing, reducing, and neutral atmospheres at temperatures where conventional stainless and lower‑alloy nickel grades suffer scale spalling, carburization, or rapid strength loss. Its balanced chemistry and microstructural stability made it a mainstay for high‑temperature service by the late 20th century and beyond.
How Alloy X Was Developed
Metallurgists sought an alloy combining high chromium (for robust oxidation resistance), molybdenum (for solid‑solution strengthening), and controlled levels of iron and tungsten to ensure both elevated‑temperature strength and fabricability. The resulting composition delivers good formability, weldability, and machinability while maintaining mechanical integrity through 1500°F (816°C) and resisting oxidation up to 2200°F (1204°C). Critically, Alloy X forms a tenacious, non‑spalling oxide film, preserving protection during long thermal exposures; it is also highly resistant to carburization and nitriding, conditions that often cause premature failure in other heat‑resistant alloys.
Early Applications of Alloy X
As gas‑turbine and furnace technologies pushed temperature limits, Alloy X quickly proved its value in the hot‑combustor zones of aircraft engines and industrial furnaces. Early—and continuing—applications include:
- Jet engine tailpipes, afterburner components, cabin heaters
- Gas turbines and hot‑gas path components
- Industrial furnace rolls, trays, and structural parts operating in mixed atmospheres
- Chemical and petrochemical process equipment exposed to aggressive high‑temperature environments
Operators favored Alloy X because it maintained strength and ductility while resisting oxidation, carburization, and stress‑corrosion cracking in petrochemical service.
How Alloy X Is Used Today
Today, Alloy X remains a core material across aerospace, power generation, petrochemical, and heat‑treating markets. Its performance envelope—high strength to ~1500°F and oxidation resistance to ~2200°F—supports aerospace, turbine systems, industrial furnaces, heat treating, petrochemical, and chemical processing.
Your Trusted Supplier for Alloy X
United Performance Metals supplies Alloy X in a broad range of forms—coil and sheet (0.020″–0.125″), plate (0.250″–3.000″), bar (0.250″–6.500″), and precision reroll strip (0.0008″–0.015″)—processed to common specifications such as AMS 5536 / 5754, ASTM B435 / B572, and ASME SB435. With FIRSTCUT+® precision processing and extensive experience supporting jet engine, turbine, petrochemical, and furnace customers, UPM delivers Alloy X cut to your exact specifications with reliable quality and supply chain support.
Contact our team today to discuss availability, specifications, and processing options—and learn how Hastelloy® X can enhance the performance and reliability of your next high‑temperature application.