Inconel 718 Round Rods
Inconel 718 Round Rods are high-performance nickel-chromium-based superalloys manufactured, stocked, and exported by Rose Metal Industries. Known for their exceptional strength, toughness, and corrosion resistance at elevated temperatures, these rods are widely used across aerospace, power generation, oil & gas, and marine industries. Rose Metal Industries ensures the supply of high-quality Inconel 718 rods to clients in Tamilnadu, Andhra Pradesh, Karnataka, Telangana, Puducherry (Pondicherry), and Andaman & Nicobar Islands, as well as international markets..
The rods are produced in accordance with stringent industry standards, including ASTM B637, AMS 5662 / 5663 / 5664, and EN/ASME specifications. They are available in various diameters and lengths, and can be customized in terms of surface finish, such as bright, polished, or centerless ground, to meet precise industrial requirements. Each rod undergoes comprehensive testing, including dimensional checks, tensile and hardness tests, and PMI/chemical analysis, ensuring compliance with global standards..
Chemical composition of Inconel 718 includes approximately 50–55% Nickel, 17–21% Chromium, 2.8–3.3% Molybdenum, 4.75–5.5% Niobium & Tantalum, along with small amounts of Titanium, Aluminum, and Carbon. This unique composition gives the alloy its superior high-temperature strength, creep resistance, and corrosion resistance. The balance of iron in the alloy contributes to its toughness, making it suitable for heavy-duty applications in extreme environments..
Mechanical properties of Inconel 718 round rods include a tensile strength of ≥1275 MPa, yield strength ≥1035 MPa, elongation ≥12%, and hardness up to 363 HB. These properties make the rods ideal for critical components in turbine shafts, engine parts, subsea valves, pressure vessels, and nuclear plant equipment, where reliability under high stress and high temperature is crucial..
Specifications & Standards
| Property | Typical / Standard |
|---|---|
| Grades | Inconel 718 (UNS N07718, Alloy 718) |
| Standards | ASTM B637, AMS 5662 / 5663 / 5664, ASME / EN Standards |
| Forms | Round Rods, Billets, Forged Bars |
| Surface Finish | Bright, Black, Polished, Centreless Ground |
| Testing | Dimensional, Tensile, Hardness, PMI, MTC 3.1 / 3.2 |
Chemical Composition (typical ranges)
| Element | Content (%) |
|---|---|
| Nickel (Ni) | 50.0 – 55.0 |
| Chromium (Cr) | 17.0 – 21.0 |
| Iron (Fe) | Balance |
| Niobium + Tantalum (Nb+Ta) | 4.75 – 5.50 |
| Molybdenum (Mo) | 2.80 – 3.30 |
| Titanium (Ti) | 0.65 – 1.15 |
| Aluminum (Al) | 0.20 – 0.80 |
| Carbon (C) | ≤ 0.08 |
Mechanical Properties (typical)
| Property | Typical Value | Notes |
|---|---|---|
| Tensile Strength (UTS) | ≥ 1275 MPa | Depends on heat treatment |
| Yield Strength | ≥ 1035 MPa | Solution annealed / aged |
| Elongation | ≥ 12% | High strength, moderate ductility |
| Hardness | ≤ 363 HB | Varies with heat treatment |
| Melting Point | 1260 – 1336°C | Nickel-based superalloy |
Equivalent Grades & Designations
| Common Name | UNS | EN / Werkstoff | BS / AFNOR |
|---|---|---|---|
| Inconel 718 | N07718 | 2.4668 / Alloy 718 | NA 51 / NC19FeNb |
Dimension Chart — Round Rods (Common sizes)
Standard diameters supplied in mm & inch.
| Diameter (mm) | Diameter (inch) | Lengths (mm) | Tolerance |
|---|---|---|---|
| 6 – 16 | 1/4" – 5/8" | 1000 – 3000 | ASTM / EN |
| 18 – 30 | 3/4" – 1" | 1000 – 3000 | ±0.1 – 0.5 mm |
| 32 – 45 | 1.25" – 1.75" | 1000 – 3000 | ±0.2 – 0.6 mm |
| 50 – 75 | 2" – 3" | 2000 – 3000 | Custom |
| 80 – 200 | 3"+ | Mill / cut | Custom |
Typical Applications
- Aerospace components: turbines, jet engines
- Power generation: nuclear & thermal plants
- Oil & gas: subsea valves, high-pressure piping
- Marine equipment & seawater handling systems
- Automotive high-performance components
- General machining & fabrication requiring high strength at elevated temperatures
Rose Metal Industries offers equivalent grades and designations to suit global requirements. UNS N07718 is the standard designation, with equivalent EN/Werkstoff and BS/AFNOR designations available on request. This ensures compatibility with international engineering and fabrication standards, supporting clients in both domestic regions like Tamilnadu, Karnataka, Telangana, and global industrial projects..
Applications of Inconel 718 round rods are extensive. They are widely used in aerospace (jet engines, turbine components), power generation (thermal and nuclear plants), oil & gas (offshore and subsea components), marine engineering, and high-performance automotive parts. The alloy’s ability to retain mechanical properties at elevated temperatures and resist corrosion in seawater or chemical environments makes it a preferred choice for demanding industrial applications.
Frequently Asked Questions (FAQ)
Q1: What is the difference between Inconel 718 and Inconel 625?
A: Inconel 718 offers higher strength at elevated temperatures due to its precipitation hardening properties, whereas Inconel 625 has superior corrosion resistance. Choose 718 for aerospace, nuclear, and high-stress applications and 625 for marine or chemical environments.
Q2: Do you provide mill test certificates (MTC) for Inconel 718 round rods?
A: Yes — Rose Metal Industries supplies MTCs and can facilitate third-party inspection, PMI, or chemical analysis upon request for customers in Tamilnadu, Andhra Pradesh, Karnataka, Telangana, Puducherry, and Andaman & Nicobar Islands.
Q3: What standards do your Inconel 718 round rods comply with?
A: Our rods comply with ASTM B637, AMS 5662 / 5663 / 5664, ASME, and EN standards depending on product form and customer requirements. We ensure global-grade compliance for industrial, aerospace, and oil & gas applications.
Q4: Can you supply custom diameters, lengths, and surface finishes for Inconel 718?
A: Yes — We provide cut-to-length rods, bright/turned finishes, polished, and custom tolerances. Contact our sales team for lead times and minimum order quantities in Tamilnadu, Andhra Pradesh, Karnataka, Telangana, Puducherry, and Andaman & Nicobar Islands.
Q5: What are the typical applications of Inconel 718 round rods?
A: Inconel 718 is widely used in aerospace (turbine shafts, engine components), power generation (nuclear & thermal plants), oil & gas (subsea valves, high-pressure piping), and marine equipment. Our global customers rely on Rose Metal Industries for high-quality, corrosion-resistant rods suitable for extreme conditions.