1. Product Attributes
| Grade |
Inconel X-750 / Alloy X-750 |
| UNS |
N07750 |
| W.Nr. / EN |
2.4669 / NiCr15Fe7TiAl |
| Type |
Precipitation-Hardenable Nickel-Chromium Alloy Sheet & Plate |
| Density |
8.28 g/cm³ |
| Thickness |
0.3 mm - 12 mm (0.012" - 0.472") |
| Width |
1000 mm / 1219 mm / 1500 mm (Custom Available) |
| Length |
2000 mm / 2438 mm / 3000 mm (Custom Cut) |
| Supply Condition |
Solution Annealed (SA) / Solution Treated & Aged (STA) |
| Surface Finish |
2B / BA / No.1 / Polished / Pickled |
| Standards |
ASTM B670, AMS 5542, AMS 5598, AMS 5599, EN 10095 |
2. Material Overview
High-Strength Inconel X-750 Sheet for Extreme High-Temperature Applications
Dingsco supplies premium quality Inconel Alloy X-750 (UNS N07750, W.Nr. 2.4669) sheets and plates — a precipitation-hardenable nickel-chromium alloy engineered for exceptional strength, creep resistance, and oxidation stability at elevated temperatures up to 1300°F (704°C). Manufactured to ASTM B670 / AMS 5542 standards, our X-750 sheets deliver consistent metallurgical structure and reliable mechanical performance across aerospace, gas turbine, nuclear, and petrochemical applications.
3. Chemical Composition (wt%)
| Element |
Ni |
Cr |
Fe |
Nb+Ta |
Ti |
Al |
C |
Mn |
Si |
Cu |
S |
| Min |
70.0 |
14.0 |
5.0 |
0.70 |
2.25 |
0.40 |
— |
— |
— |
— |
— |
| Max |
Bal. |
17.0 |
9.0 |
1.20 |
2.75 |
1.00 |
0.08 |
1.00 |
0.50 |
0.50 |
0.01 |
4. Physical Properties
| Property |
Value |
| Density |
8.28 g/cm³ |
| Melting Point |
1395 - 1425°C |
| Thermal Conductivity @ 20°C |
11.6 W/(m·K) |
| Coefficient of Thermal Expansion (20-100°C) |
13.1 * 10⁻⁶ /°C |
| Electrical Resistivity @ 20°C |
122 μΩ·cm |
| Elastic Modulus |
214 GPa |
5. Mechanical Properties (Age-Hardened Condition)
| Property |
Value |
| Tensile Strength (UTS) |
≥ 1170 MPa (170,000 psi) |
| Yield Strength (0.2% Offset) |
≥ 860 MPa (125,000 psi) |
| Elongation (in 2") |
≥ 25% |
| Hardness |
310 - 375 HB |
6. Corrosion Resistance Comparison (CPT / CCT)
| Alloy |
UNS |
PREN |
CPT (°C) |
CCT (°C) |
| Alloy X-750 |
N07750 |
≥ 22 |
~25 |
~15 |
| Alloy 718 |
N07718 |
≥ 20 |
~20 |
~10 |
| Alloy 625 |
N06625 |
≥ 45 |
~65 |
~45 |
| Alloy C-276 |
N10276 |
≥ 63 |
≥85 |
≥70 |
Note: CPT measured per ASTM G48 Method C in 6% FeCl₃ solution. CCT measured per ASTM G48 Method D. PREN = %Cr + 3.3(%Mo) + 16(%N).
7. Key Features & Benefits
| Feature |
Benefit |
| ★ Outstanding High-Temperature Strength |
Maintains high tensile and yield strength up to 700°C (1292°F) after age hardening, ideal for aerospace engine and gas turbine sheet metal components. |
| ★ Excellent Creep & Rupture Resistance |
Suitable for long-term service under load at elevated temperatures, ensuring dimensional stability in critical sheet components. |
| ★ Superior Oxidation Resistance |
Withstands continuous service in oxidizing environments up to 980°C (1800°F), suitable for exhaust systems, combustion liners, and heat shields. |
| ★ Good Corrosion Resistance |
Resists a wide range of acidic and caustic media, plus stress corrosion cracking in chloride-containing environments. |
| ★ Precipitation Hardening Capability |
Achieves superior strength through γ'' phase precipitation (Al/Ti), enabling tailored mechanical properties for specific applications. |
| ★ Excellent Formability (Solution-Annealed) |
Readily fabricated by cold working, stamping, and deep drawing in the solution-annealed condition before precipitation hardening. |
8. Product Image Showcas
9. Supply Forms & Available Specifications
| Parameter |
Range / Options |
| Thickness |
0.3 mm - 12 mm (0.012" - 0.472") |
| Width |
1000 mm / 1219 mm / 1500 mm (custom available) |
| Length |
2000 mm / 2438 mm / 3000 mm (custom cut) |
| Standards |
ASTM B670, AMS 5542, AMS 5598, AMS 5599, EN 2.4669 |
| Supply Condition |
Solution Annealed (SA) / Solution Treated & Aged (STA) |
| Surface Finish |
2B / BA / No.1 / Polished / Pickled |
| Heat Treatment |
Solution: 1150°C ± 15°C, Air/Fast Cool | Aging: 845°C * 24h AC + 705°C * 20h AC |
| Certification |
Mill Test Report (MTR) EN 10204 3.1 / 3.2, Third-Party Inspection Available |
10. Typical Applications
| Industry |
Applications |
| 🔹 Aerospace & Gas Turbines |
Turbine blades, springs, fasteners, heat shields, structural components |
| 🔹 Nuclear Power |
Reactor springs, bolting, hold-down components |
| 🔹 Petrochemical Processing |
High-temperature valves, pump components, reactor internals |
| 🔹 Industrial Furnaces |
Fixtures, trays, radiation tubes, heat-treatment baskets |
| 🔹 Tooling & Die |
Hot extrusion dies, molding components for elevated-temperature service |
11. DINGSCO Company Profile & Why Source from Us
DINGSCO - PROFESSIONAL NICKEL ALLOY MANUFACTURER
✅ Genuine Material Guarantee:
Full traceability from melt to finished product. 100% PMI testing, ultrasonic inspection, and mechanical testing on every shipment.
✅ Strict Quality Control:
As an ISO 9001:2015, PED 2014/68/EC, and API 6A certified manufacturer, we enforce strict quality control at every production stage.
SCIENCE AND TECHNOLOGY INNOVATION STRATEGY:
We pay close attention to customer needs, implement product innovation, and further leverage the company's full range of product types and material grades to provide customers with one-stop service. Continuous improvement through implementation of material, process, and equipment optimization is our core commitment.
COOPERATION:
We are pleased to help others and glad to acquire the hand of others. We actively participate in team meetings and support decision-making. We share our experience with each other and excel at cooperating with different types of colleagues across global projects.
12. Core Nickel Alloy Grade Comparison
| Dimension |
Inconel X-750 |
Inconel 718 |
Inconel 625 |
Inconel 600 |
| UNS |
N07750 |
N07718 |
N06625 |
N06600 |
| W.Nr. |
2.4669 |
2.4668 |
2.4856 |
2.4816 |
| Alloy System |
Ni-Cr-Fe-Al-Ti |
Ni-Cr-Fe-Nb-Mo |
Ni-Cr-Mo-Nb |
Ni-Cr-Fe |
| Strengthening |
γ''/γ' (Al+Ti) Precipitation |
γ'' (Nb) Precipitation |
Solid Solution (Mo+Nb) |
Solid Solution Only |
| Ni Content |
~70% |
~53% |
~61% |
~72% |
| UTS (Age-Hardened) |
≥ 1170 MPa |
≥ 1240 MPa |
~827 MPa (Annealed) |
~550-690 MPa |
| YS (Age-Hardened) |
≥ 860 MPa |
≥ 1034 MPa |
~414 MPa (Annealed) |
~205-345 MPa |
| Max Service Temp |
~700°C (load) / 980°C (oxid.) |
~650°C (load) / 1000°C (oxid.) |
~980°C |
~1095°C |
| Creep Resistance |
Excellent (up to 700°C) |
Excellent (up to 650°C) |
Good |
Fair |
| Corrosion Resistance |
Good (Oxidation + General) |
Good |
Excellent (Pitting/Crevice/Acid) |
Good (Oxidation) |
| Weldability |
Fair (Post-Weld Aging Req.) |
Good |
Excellent |
Excellent |
| Formability |
Good (Solution-Annealed) |
Good (Solution-Annealed) |
Excellent |
Excellent |
| Heat Treatment |
Complex (Solution + Dual Aging) |
Complex (Solution + Aging) |
Simple (Annealing Only) |
Simple (Annealing Only) |
| Cost Level |
Medium-High |
High |
High |
Medium |
| Typical Applications |
Turbine blades, springs, nuclear bolts |
Engine discs, rocket parts |
Chemical piping, offshore, pickling |
Heat treatment fixtures, nuclear heaters |
13.Material Selection
14. Customized Products
Dingsco specializes in providing customized nickel alloy sheet and plate solutions to your exact specifications. Our engineering team works closely with customers from design to delivery, offering:
| Custom Service |
Capability |
| Non-Standard Thickness |
Custom gauge sheet and plate produced to your exact thickness requirements |
| Cut-to-Size Service |
Precision shear cutting, waterjet, and laser cutting to your specific part geometry |
| Special Surface Finishes |
Custom polished (No.4/No.8 mirror), brushed, or pickled surfaces |
| Value-Added Processing |
Forming, bending, stamping, welding, and heat treatment per your specifications |
| Full Documentation |
EN 10204 3.1 / 3.2 MTC, PMI testing, UT inspection, grain size, NACE compliance |
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