Zeron Fastners
Nickel Alloys Inconel 625 Elbows
The Inconel 625 Elbow is a vital forging component used in high-integrity piping systems to smoothly change the direction of fluid flow, typically at 90-degree or 45-degree angles. These fittings are manufactured from the elite nickel-chromium-molybdenum superalloy, UNS N06625 (Alloy 625). The high content of Molybdenum and Niobium provides Inconel 625 with exceptional strength and stability, particularly at high temperatures (retaining strength up to 982 C or 1800 F), while the Nickel and Chromium content delivers outstanding corrosion resistance. This makes these elbows ideal for service in highly aggressive environments, including direct contact with seawater, acidic media, and applications prone to pitting, crevice corrosion, and stress corrosion cracking (SCC). Inconel 625 elbows are used extensively in aerospace ducting, chemical processing reactors, and offshore oil and gas pipelines. Zeron Fastners manufactures and supplies these premium pipe fittings in compliance with stringent standards such as ASME B16.9 (for dimensions) and the material specification ASTM B366 (for factory-made fittings).
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Inconel 625 Chemical Composition
| Element | Composition (Weight) |
|---|---|
| Nickel (Ni) | Min 58.0 |
| Chromium (Cr) | 20.0 – 23.0 |
| Molybdenum (Mo) | 8.0 – 10.0 |
| Niobium + Tantalum (Nb + Ta) | 3.15 – 4.15 |
| Iron (Fe) | Max 5.0 |
| Carbon (C) | Max 0.10 |
| Cobalt (Co) | Max 1.0 |
| Aluminum (Al) | Max 0.40 |
| Titanium (Ti) | Max 0.40 |
Note: Composition according to specifications like ASTM B446 ASME B366.
Inconel 625 Mechanical Properties
| Property | Minimum Value (Annealed Condition) |
|---|---|
| Ultimate Tensile Strength | 690 MPa |
| 0.2% Proof Stress (Yield Strength) | 275 MPa |
| Elongation (%) | Min 30 |
| Density | 8.44 g/cm3 |
| Maximum Service Temperature (Oxidation) | 982 C |
Values are typical for annealed material and may vary based on specific manufacturing method (e.g., seamless, welded).