Hastelloy X Alloy Plate/Sheet
Hastelloy X (UNS N06002 / 2.4665) is an austenitic nickel-base superalloy plate/sheet manufactured in compliance with ASTM B435 and AMS 5536 standards. It exhibits exceptional oxidation resistance, carburization resistance, and high-temperature creep-rupture strength in extreme thermal environments up to 1200°C (2200°F).
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Description
Gnee Steel (Tianjin) Co., Ltd. is one of the most professional manufacturers and suppliers of Hastelloy X Alloy Plate/Sheet in China. With abundant experience, we warmly welcome you to wholesale customized Hastelloy X Alloy Plate/Sheet from our factory. For price consultation, contact us.
Hastelloy X (UNS N06002 / W.Nr. 2.4665) is a solid-solution strengthened nickel-chromium-iron-molybdenum superalloy sheet. Its key advantage is a continuous service temperature of up to 1200°C (2192°F), with oxidation and sulfidation resistance in both oxidizing (SO₂, CO₂) and reducing (H₂S, NH₃) atmospheres that surpasses that of Inconel 600 and 310SS.
It retains over 50% of its room-temperature tensile strength at 1400°F (760°C) and offers a 10,000-hour creep-rupture strength of 39 ksi (270 MPa), making it a preferred material for aircraft engine combustion chambers, transition ducts, and industrial furnace linings. As a solid-solution strengthened alloy, it poses no risk of sensitization and requires no post-weld heat treatment; it exhibits the best weldability among all Ni-Cr-Fe-Mo superalloys, with recommended filler metals being ERNiCrFe-1 (AWS A5.11) or ERNiMo-13 (Inconel 625).
GNEE offers products in thicknesses ranging from 0.025 mm to 100 mm (foil, sheet, and plate) and widths from 100 mm to 2500 mm, with cut-to-length capabilities up to 8000 mm. Surface finishes include No. 1, 2B, 2D, BA, 2E, polished, and brushed. Standards met include ASTM B435/B575/B622, ASME SB435, AMS 5536, EN 10088-2, and DIN 2.4665. Each batch comes with an EN 10204 3.1 material certificate, and NADCAP/EN 9100 certification is available for aerospace-grade orders. The minimum order quantity (MOQ) is 50 kg for sheets and 100 kg for plates; lead times are 2–4 weeks for standard stock items and 6–12 weeks for custom orders and heavy plates. Packaging complies with maritime export standards, and value-added services such as CNC machining, laser cutting, waterjet cutting, bending, and welding according to drawings are available.
Hastelloy X (UNS N06002) Alloy Plate/Sheet Specification
| Parameter | Details |
| Material Standard | ASTM B435 / ASME SB435 (Plate & Sheet) / ASTM B575 (Foil & Thin Sheet) / ASTM B626 (Welding Rod) |
| Grade | Hastelloy X (UNS N06002 / W.Nr. 2.4665) |
| EN / DIN Equivalent | 2.4665 / NiCr21-18-9 (W. Nr. 2.4665) |
| AMS Specification | AMS 5536 (Sheet, Coil & Plate, Solution Annealed) |
| ISO Equivalent | ISO 18274 |
| Product Form | Plate / Sheet / Strip / Coil / Foil |
| Plate Thickness (≥ 6.35 mm) | 6.35 – 100 mm (0.250" – 3.937") |
| Sheet Thickness (< 6.35 mm) | 0.25 – 6.35 mm (0.010" – 0.250") |
| Foil Thickness (< 0.15 mm) | 0.025 – 0.15 mm (0.001" – 0.006") |
| Width | 100 – 2500 mm (4" – 98.4") |
| Length (Cut-to-Size) | 1000 / 2000 / 2440 / 3000 / 6000 / 8000 mm or Custom |
| Surface Finish | NO.1 (Hot Rolled + Pickled), 2B, 2D, BA (Bright Annealed), 2E (Mechanically Descaled), Polished, Brushed |
| Temper / Condition | Solution Annealed (SHT) - 1120–1150 °C (2050–2100 °F), water/air quench |
| Grain Size | ASTM No. 5 – 7 (typical, plate); No. 6 – 8 (sheet) |
| Piping / Pressure Code | ASME B31.1, B31.3, B31.9; ASME VIII Div.1 (vessel) |
| Packaging | Wooden crate / steel band / VCI paper / export-seaworthy |
Chemical Composition (wt%)
| Element | Min | Max |
| Nickel (Ni) | 41.3 | 53.7 |
| 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) | - | 1.00 |
| Silicon (Si) | - | 1.00 |
| Phosphorus (P) | - | 0.04 |
| Sulfur (S) | - | 0.03 |
| Aluminum (Al) | - | 0.50 |
| Titanium (Ti) | - | 0.15 |
| Boron (B) | - | 0.008 |
| Copper (Cu) | - | 0.50 |
| Niobium (Nb) | - | 0.50 |
Hastelloy X Alloy Mechanical Properties (Solution Annealed Condition)
Room Temperature (70 °F / 21 °C)
| Property | Plate | Sheet |
| Tensile Strength (Rm) | ≥ 755 MPa (109.5 ksi) | ≥ 755 MPa (109.5 ksi) |
| Yield Strength (Rp0.2) | ≥ 385 MPa (55.8 ksi) | ≥ 340 MPa (49.3 ksi) |
| Elongation (in 2" / 50 mm) | ≥ 45% | ≥ 45% |
| Reduction of Area | ≥ 50% | ≥ 50% |
| Hardness (Rockwell B) | 87 – 100 HRB | 86 – 95 HRB |
| Hardness (Brinell) | 180 – 210 HB | 175 – 200 HB |
Elevated Temperature (Sheet, Solution Annealed)
| Temperature (°F) | Tensile (ksi) | 0.2% Yield (ksi) | Elongation (%) |
| 70 (21 °C) | 110.6 | 54.9 | 44 |
| 1000 (538 °C) | 89.0 | 35.6 | 49 |
| 1200 (649 °C) | 83.0 | 35.4 | 54 |
| 1400 (760 °C) | 67.0 | 34.4 | 53 |
| 1600 (871 °C) | 45.0 | 28.2 | 58 |
Creep / Stress Rupture (Plate, 1/2" thick, SHT)
| Temperature (°F) | 1000 hr Rupture (ksi) | 10,000 hr Rupture (ksi) |
| 1200 (649 °C) | 73.4 | - |
| 1400 (760 °C) | 56.5 | 39.0 |
| 1600 (871 °C) | 47.9 | - |
Heat Treatment
| Step | Specification |
| Solution Annealing | 1120 – 1150 °C (2050 – 2100 °F), water or air quench |
| Stress Relief (if needed) | 870 – 980 °C (1600 – 1800 °F), 1 hr/in wall, air cool |
| Aging / Precipitation | Not applicable - solid-solution strengthened alloy (no age-hardening response) |
| Note | No secondary hardening; strength is matrix-based. Avoid prolonged exposure above 1200 °C in reducing atmospheres (risk of sulfidation) |
Plate/Sheet Weight
| Thickness (mm) | Thickness (in) | Weight (kg/m²) | Weight (lbs/ft²) |
| 0.25 | 0.010 | 2.06 | 0.42 |
| 0.50 | 0.020 | 4.11 | 0.84 |
| 1.00 | 0.039 | 8.22 | 1.68 |
| 1.50 | 0.059 | 12.33 | 2.52 |
| 2.00 | 0.079 | 16.44 | 3.36 |
| 3.00 | 0.118 | 24.66 | 5.04 |
| 4.00 | 0.157 | 32.88 | 6.72 |
| 5.00 | 0.197 | 41.10 | 8.40 |
| 6.35 | 0.250 | 52.20 | 10.68 |
| 8.00 | 0.315 | 65.76 | 13.44 |
| 10.00 | 0.394 | 82.20 | 16.80 |
| 12.70 | 0.500 | 104.40 | 21.36 |
| 15.88 | 0.625 | 130.50 | 26.70 |
| 19.05 | 0.750 | 156.60 | 32.04 |
| 25.40 | 1.000 | 208.80 | 42.72 |
| 38.10 | 1.500 | 313.20 | 64.08 |
| 50.80 | 2.000 | 417.60 | 85.44 |
| 63.50 | 2.500 | 522.00 | 106.80 |
| 76.20 | 3.000 | 626.40 | 128.16 |
| 100.00 | 3.937 | 822.00 | 168.00 |
Formula: Weight (kg/m²) = Thickness (mm) × 8.22
What is the price of Hastelloy X plate/sheet?
2026 market reference range: Plate/Sheet: approximately $22–$75/kg ($10,000–$34,000/tonne), with a mainstream range of $30–$55/kg.
To assist us in providing an accurate quote,
could you please provide the following information:
The required dimensions and thickness of the plates?
The estimated total quantity or total weight?
Are any specific industry certifications required (e.g., aerospace standards, ASTM specifications)?
FAQ
Is Hastelloy X the same as Inconel?
No. Hastelloy X is produced by Haynes International; Inconel is an ATI trademark. Both are nickel-based but differ in composition and design focus.
How does Hastelloy X compare to Hastelloy C-276?
Hastelloy X is optimized for high-temperature oxidation resistance and structural strength above 800°C, while C-276 targets corrosion resistance in aggressive chemical environments at lower temperatures.
What are the main applications?
Gas turbine components, combustion-zone parts (flame holders, tailpipes), industrial furnace fixtures, petrochemical reactors/heat exchangers, and nuclear gas-cooled reactor parts.
How is Hastelloy X Plate/Sheet machined?
Conventional methods apply, but it work-hardens rapidly. Use low cutting speeds, high feed rates, rigid fixturing, and ample coolant (water-based or sulfochlorinated oil). Carbide or ceramic tools are recommended over HSS.
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