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Inconel 625
Complete Technical Data Sheet for Inconel 625 Chemical Composition Mechanical Properties Physical Properties International Standards & Grade Equivalents Key Applications of Inconel 625 Aerospace and Aviation Inconel 625 is widely used in the aerospace industry for components exposed to extreme temperatures and stress, such as turbine blades, exhaust systems, and jet engine parts. Its resistance […]
Description
Grade Inconel 625 Product Specifications
Nickel Alloy Plates
Our Inconel 625 plates offer excellent corrosion and oxidation resistance, maintaining mechanical strength at elevated temperatures for use in critical industrial and marine applications.
Nickel Alloy Bars/Rods
Inconel 625 bars and rods offer superior strength and durability, ideal for demanding manufacturing, machining, and structural engineering.
Nickel Alloy Tubes
Engineered for precision and longevity, our Inconel 625 tubes are suitable for chemical processing, heat exchangers, and power generation where reliability under high pressure is essential.
Nickel Alloy Wire
Inconel 625 wire features outstanding flexibility and resilience, ensuring stable performance in welding, spring fabrication, and high-temperature fasteners across technical industries.
Complete Technical Data Sheet for Inconel 625
| Element | Composition (%) |
|---|---|
| Nickel | 58.0-63.0 |
| Chromium | 20.0-23.0 |
| Molybdenum | 8.0-10.0 |
| Niobium | 3.15-4.15 |
| Iron | ≤ 5.0 |
| Titanium | ≤ 0.5 |
| Copper | ≤ 0.5 |
| Carbon | ≤ 0.1 |
| Manganese | ≤ 1.0 |
| Silicon | ≤ 0.5 |
| Sulfur | ≤ 0.015 |
| Property | Value |
|---|---|
| Tensile Strength | ≥ 90 ksi (620 MPa) |
| Yield Strength | ≥ 30 ksi (205 MPa) |
| Elongation | ≥ 30% |
| Hardness | ≤ 200 HB |
| Density | 8.44 g/cm3 |
| Melting Range | 2460-2470°F (1350-1355°C) |
| Modulus of Elasticity | 28.3 x 103 ksi (196 GPa) |
| Thermal Conductivity | 9.8 BTU/hr·ft²·°F |
| Coefficient of Thermal Expansion | 6.5 x 10⁻⁶/°F |
| Corrosion Resistance | Excellent in a wide range of corrosive environments |
| Oxidation Resistance | Good at high temperatures |
| Weldability | Good, typically requires no preheating |
| Property | Value |
|---|---|
| Alloy Type | Inconel 625 |
| Chemical Composition | Nickel, Chromium, Molybdenum, Niobium |
| Oxidation Resistance | Excellent |
| Corrosion Resistance | Good in seawater and corrosive environments |
| Service Temperature Range | Cryogenic to 1800°F (982°C) |
| Heat Treatment | Anneal |
| Applications | Jet engines, heat exchangers, exhaust systems |
| Mechanical Properties | High strength, solid solution strengthened |
| ASTM Designation | UNS N06625 |
| Grain Size | Fine grain for enhanced toughness |
| Standard | Equivalent Grade |
|---|---|
| ASTM B443 | Inconel 625 |
| UNS N06625 | Nickel Alloy 625 |
| ASTM B446 | Alloy 625 |
| ASTM B705 | Inconel® 625 |
| ASTM B444 | Inconel 625 Round |
| ASTM B829 | Nickel-Chromium Alloy |
| EN 2.4856 | Alloy 625 |
| ISO 15156 | Corrosion-Resistant Alloy |
| BS 3076 | Inconel 625 |
| ASME SB-443 | Nickel-Based Alloy |
Properties of Inconel 625
Exceptional Corrosion Resistance
Inconel 625 demonstrates outstanding resistance to a broad spectrum of corrosive environments, making it highly suitable for service in both oxidizing and reducing conditions. It performs exceptionally well against pitting, crevice corrosion, and intergranular attack, even in harsh chemical processing environments. This resilience is particularly advantageous in applications where exposure to chlorides, acidic solutions, or seawater would quickly compromise less advanced alloys. The material’s ability to maintain its integrity in these challenging settings is crucial for long-term operational reliability and reduced maintenance requirements.
High Strength Across Temperature Extremes
The alloy’s unique composition enables it to retain superior mechanical strength over a wide temperature range, from cryogenic conditions up to 982°C (1800°F). Inconel 625 does not require precipitation hardening treatments, as its strength derives primarily from solid-solution effects. This property ensures that critical structural components retain excellent tensile, fatigue, and creep-rupture characteristics under intense thermal cycling. Industries that require components to function safely and efficiently during extreme heat or cold will benefit from the consistent performance of Inconel 625.
Superior Weldability and Fabrication
Unlike many nickel-based superalloys, Inconel 625 is renowned for its exceptional weldability and formability. It can be joined using conventional welding methods without risk of post-weld cracking—an important factor in the fabrication of complex parts. Its ductility and stability during welding processes make it a top choice for assemblies that demand intricate designs and high-integrity joints. This fabrication versatility allows engineers to employ Inconel 625 in advanced manufacturing operations without the need for extensive special procedures or costly post-processing.
Versatility for Critical Applications
Inconel 625’s property profile enables its reliable use across a diverse range of critical industries, including aerospace, marine, chemical processing, and nuclear power. The alloy excels in the manufacture of components such as turbine blades, nuclear reactor assemblies, and chemical plant equipment, where simultaneous requirements for mechanical strength, corrosion resistance, and thermal stability are stringent. This versatility translates into real-world engineering confidence, as Inconel 625 consistently delivers high performance under operating conditions that would challenge most other materials.
Key Applications of Inconel 625
Aerospace and Aviation
Inconel 625 is widely used in the aerospace industry for components exposed to extreme temperatures and stress, such as turbine blades, exhaust systems, and jet engine parts. Its resistance to oxidation and thermal fatigue ensures reliability and longevity in demanding flight environments.
Marine and Offshore Engineering
In the marine sector, Inconel 625 is applied to critical components like propeller blades, wire ropes, and seawater-facing equipment. Its excellent resistance to chloride-induced corrosion and pitting makes it a preferred choice for offshore platforms, naval vessels, and undersea pipelines subjected to aggressive marine environments.
Chemical and Power Processing
The alloy is frequently employed in chemical processing plants and power generation facilities for heat exchangers, reactor vessels, and acid handling systems. Its high strength and superior corrosion resistance against a broad range of acids enable safe, efficient operation in environments where conventional alloys would quickly degrade.
What Our Clients Say
“Inconel 625 has consistently met our most rigorous requirements for corrosion resistance and high-temperature performance. The technical support provided was thorough, ensuring we selected the optimal grade and form for our application.”
Emily
Senior Materials Engineer
“We rely on Inconel 625 for its proven long-term durability in harsh environments. The team’s expertise and prompt service streamlined our procurement process, delivering quality solutions for our operational needs.”
David Lee
Procurement Manager
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Frequently Asked Questions
What is Inconel 625?
Inconel 625 is a nickel-chromium-molybdenum alloy engineered for exceptional resistance to corrosion and oxidation, as well as high strength at elevated temperatures.
What are the main industries using Inconel 625?
Key industries include aerospace, marine, chemical processing, power generation, and oil and gas due to the alloy’s robust performance in demanding environments.
What are the typical forms available for Inconel 625?
Inconel 625 is supplied in plate, sheet, bar, rod, tube, pipe, wire, fittings, and welding materials to accommodate a wide range of industrial applications.
How does Inconel 625 compare to other Inconel grades?
Inconel 625 offers superior corrosion resistance without the need for precipitation hardening treatments, while other grades may be optimized for different mechanical or high-temperature requirements.
Can Inconel 625 be welded?
Yes, Inconel 625 demonstrates excellent weldability using various methods, making it suitable for complex fabrications requiring strong, corrosion-resistant joints.
What is the typical operating temperature range for Inconel 625?
The alloy maintains its mechanical properties from cryogenic conditions up to approximately 1800°F (982°C), offering reliable performance across a wide service range.
What corrosion mechanisms is Inconel 625 resistant to?
Inconel 625 is highly resistant to pitting, crevice corrosion, intergranular attack, stress-corrosion cracking, oxidation, and a range of acids including nitric, phosphoric, and sulfuric acid.
How can I obtain a technical data sheet or quote for Inconel 625?
Technical data sheets and detailed quotations are available upon request. Please contact our expert team for comprehensive support tailored to your application needs.
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