Inconel X-750 and Inconel 625 are both high-performance nickel-chromium alloys developed for specific applications, but they have different compositions and properties that make them suitable for different environments and conditions.
Inconel X-750
Composition:
Inconel X-750 is a precipitation-hardenable nickel-chromium alloy.
It typically contains 70% nickel, 14-17% chromium, 2.25-2.75% titanium, 0.7-1.2% aluminum, and small amounts of other elements such as iron, niobium, and manganese.
Properties:
Strength: Inconel X-750 is known for its excellent strength at high temperatures up to 704°C (1300°F).
Heat Resistance: It retains its strength and oxidation resistance at elevated temperatures.
Applications: Commonly used in gas turbines, rocket engines, nuclear reactors, pressure vessels, and springs where high strength at elevated temperatures is required.
Inconel 625
Composition:
Inconel 625 is a solid-solution nickel-chromium alloy strengthened by the addition of molybdenum and niobium.
It typically contains 58% nickel, 20-23% chromium, 8-10% molybdenum, 3.15-4.15% niobium (columbium), and smaller amounts of iron, tantalum, silicon, and aluminum.
Properties:
Corrosion Resistance: Inconel 625 is highly resistant to corrosion and oxidation in a wide range of severe environments, including seawater and chemical processing.
Strength: It offers good strength and toughness at both cryogenic and high temperatures (up to 1093°C or 2000°F).
Applications: Used in marine applications, chemical processing equipment, aerospace and defense components, and pollution control systems.
Comparison
Strength and Temperature Resistance:
Inconel X-750 has superior strength at high temperatures compared to Inconel 625. It is specifically designed for applications where high strength is crucial at temperatures up to 704°C (1300°F).
Corrosion Resistance:
Inconel 625 has better corrosion resistance compared to Inconel X-750, particularly in harsh environments involving acids, seawater, and oxidation.
Applications:
Inconel X-750 is used in applications where high strength at elevated temperatures is critical, such as gas turbines, rocket engines, and nuclear reactors.
Inconel 625 finds applications where corrosion resistance is paramount, including marine environments, chemical processing, and aerospace components.
Conclusion
Choosing between Inconel X-750 and Inconel 625 depends largely on the specific requirements of the application. If high strength at elevated temperatures is the primary consideration, Inconel X-750 is preferred. For applications requiring superior corrosion resistance across various environments, Inconel 625 is the better choice. Both alloys represent advanced materials engineering solutions for demanding industrial and aerospace applications.
Our product range
| Product Form | Standard Specifications & Dimensions | Common Alloys (Examples) | Typical Standards |
|---|---|---|---|
| Bar & Rod | Round Bar: Diameter: 3mm ~ 300mm Hexagon Bar: Across Flats: 5mm ~ 100mm Square Bar: Width: 5mm ~ 150mm Length: Random, Cut-to-length, or Coils (small diameters) |
Alloy 200/201 Monel 400/K-500 Inconel 600/601/625/718 Incoloy 800/800H/825 Hastelloy C-276/C-22/B-2/B-3 |
ASTM B160, B164, B166 EN/DIN 2.4066, 2.4816, 2.4851 ASME SB-166, SB-167 |
| Wire | Diameter: 0.1mm ~ 12mm Form: Coils, spools, or straight lengths Finish: Bright, pickled, annealed |
Alloy 200/201 Inconel 600/625/X-750 Incoloy 825 |
ASTM B166, B167 EN/DIN 17752 |
| Sheet & Plate | Thickness (Sheet): 0.1mm ~ 5.0mm Thickness (Plate): 5.0mm ~ 100mm+ Width: Up to 2000mm (depending on alloy/thickness) Length: Up to 6000mm or as required |
Alloy 200/201 Monel 400 Inconel 600/625/718 Incoloy 800H/825 Hastelloy C-276 |
ASTM B162, B168, B409 EN/DIN 17742, 17744 |
| Strip & Foil | Thickness (Strip): 0.05mm ~ 2.0mm Thickness (Foil): 0.02mm ~ 0.05mm Width: Up to 600mm Condition: Cold rolled, annealed, tempered |
Alloy 200/201 Inconel 600/625 Incoloy 825 |
ASTM B162, B168 |
| Pipe & Tube | Seamless Pipe (ASTM B161/B167): - OD: 3/16" ~ 14" (6mm ~ 355mm) - Schedule: SCH 5S to XXS Welded Tube (ASTM B163/B516): - OD: 6mm ~ 300mm - Wall Thickness: 0.5mm ~ 10mm |
Alloy 200/201 Monel 400 Inconel 600/625 Incoloy 800H/825 Hastelloy C-276 |
ASTM B161, B163, B167, B516 ASME SB-163, SB-167 |
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Our factory and testing
Our core factory and collaborative production system are equipped with modern precision cutting, processing, and heat treatment equipment, focusing on transforming raw materials into semi-finished and finished products that meet stringent standards. To ensure that every batch of materials meets or exceeds specifications, we have established a comprehensive end-to-end quality inspection system. From material properties analysis (PMI) upon raw material warehousing to dimensional accuracy control during production, and finally to mechanical property testing (such as tensile strength and hardness) and non-destructive testing before final shipment, every step is rigorously controlled by our professional quality inspection team. We promise to provide an authoritative, online-verifiable original manufacturer's material certificate (MTC 3.1) for every order, and can arrange for third-party certification bodies (such as SGS, BV, and TUV) to conduct on-site inspections and issue certificates upon customer request.
