Inconel 625
Inconel 625
Inconel 625 is a nickel-based superalloy designed for strength and corrosion resistance. Its composition makes it one of the most reliable alloys for high-stress environments. Nickel, at a minimum of 58%, forms the base and provides toughness and corrosion resistance. It has chromium, ranging from 20–23% which adds strong oxidation resistance even at high heat. The added molybdenum of 8–10% improves resistance to pitting and crevice corrosion, especially in chloride-bearing media. Niobium, with 3.15–4.15% content, stabilizes the alloy and enhances strength through precipitation hardening. Small amounts of iron, carbon, manganese, silicon, and cobalt balance toughness and workability. Even trace limits of sulfur and phosphorus are controlled to keep the alloy clean and weldable. This balanced Inconel 625 composition gives the alloy strength, ductility and stability across a wide temperature range.
Parag Metals supplies Inconel 625 with precise control over heat treatment. Hot- or cold-formed parts are typically annealed at temperatures ranging from 1700°F to 1900°F, depending on their thickness. For more demanding applications, solution treatment is done at 2000°–2200°F to maximize corrosion resistance and mechanical stability. These treatments also increase the HRC levels of Inconel 625 and guarantee it maintains good performance during manufacture. The alloy responds well to both hot and cold forming and its weldability makes it a preferred choice for critical engineering projects.
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Inconel 625 Sheet, Inconel 625 Plate, Inconel 625 Coils, Inconel 625 Rods, Inconel 625 Wires Suppliers in Mumbai, India.
The inconel 625 density of 0.305 lb/cu in or 8.44 g/cc, which gives it excellent strength-to-weight balance. Its melting range lies between 2350–2460°F (1290–1350°C), ensuring reliable performance under extreme heat. The Inconel 625 temperature range is wide, allowing use in both cryogenic and elevated-temperature service. This thermal stability, combined with resistance to creep and stress rupture, ensures that the alloy can handle severe environments without losing integrity.
Inconel 625 -LCF is used to manufacture various forms, including sheets, plates, coils, and rods, apart from wires, each offering specific uses. The alloy’s toughness, weldability, and corrosion resistance make it valuable in a variety of industries, including marine, chemical, nuclear, and aerospace. Common applications include heat exchangers, turbine seals, condenser tubes, engine components, and offshore platforms. Inconel 625 is also valued in pollution control equipment and marine hardware due to its ability to resist seawater corrosion. The n06625 alloy increases fatigue resistance for cyclic usage while being durable in both oxidizing and reducing environments. With these, Inconel 625 material properties remain one of the most trusted materials for demanding industrial applications.
Inconel 625 Specification
The Inconel 625 specification outlines the key norms and requirements that define its quality, and performance. The table shows product shapes, regulatory standards, and production technical parameters.
| Rods, Bars, Wires and Forgings | ASTM B 446 / ASME SB 446, ASTM B 564 / ASME SB 564, AMS 5666, AMS 5837 (wire), EN 2.4856 (Werkstoff no.), ISO 15156-3, NACE MR0175-3 |
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Inconel Alloy 625 Chemical Composition
The Inconel Alloy 625 chemical composition shows the balance of nickel, chromium, and iron that ensures excellent corrosion and heat resistance. The table provides the exact elemental ranges used for alloy consistency.
| Element | Minimum (%) | Maximum (%) |
|---|---|---|
| Carbon | 0.00 | 0.10 |
| Nickel | Balance | N/A |
| Chromium | 20.0 | 23.0 |
| Iron | 0.00 | 5.00 |
| Silicon | 0.00 | 0.50 |
| Manganese | 0.00 | 0.50 |
| Sulfur | 0.00 | 0.015 |
| Phosphorus | 0.00 | 0.015 |
| Molybdenum | 8.00 | 10.0 |
| Titanium | 0.00 | 0.40 |
| Cobalt | 0.00 | 1.00 |
| Columbium + Tantalum | 3.15 | 4.15 |
| Aluminum | 0.00 | 0.40 |
Inconel 625 Mechanical Properties
The Inconel 625 mechanical properties explain the alloy’s strength, toughness, and ability to withstand stress in harsh environments. The table includes tensile strength, yield strength, elongation, and hardness values.
| Condition | Yield Stress (MPa) | Elongation (%) | Hardness (HV) |
|---|---|---|---|
| Wrought/Cast (low-temp aging) | 290 – 900 | 31 – 65 | 180 – 320 |
| Additive Manufactured As-built | N/A | N/A | 191 – 304 |
| AM Heat-treated (SR + HIP + SOL) | 285 – 371 | ~56 | 186 – 220 |
Inconel 625 Physical Properties
Inconel 625’s physical properties describe its behavior under various situations, including heat and pressure. The table shows the density, melting point, electrical resistivity, and thermal conductivity.
| Property | Value |
|---|---|
| Density | 8.44 g/cm³ |
| Melting Range | 1290–1350°C |
| Electrical Conductivity | 1.2 MS/m (at 20°C) |
| Thermal Conductivity | 9.8 W/m·K (at 20°C) |
| Coefficient of Thermal Expansion | 13.0 μm/m·°C |
| Elastic Modulus (Young’s) | 207 GPa |
| Magnetic Property | Non-magnetic |
Application of Inconel 625
