Inconel 718 Flat Bars
Inconel 718 Flat Bars are premium nickel-chromium-based superalloy flat bars manufactured, stocked, and exported by Rose Metal Industries. Renowned for their exceptional corrosion resistance, high-temperature strength, and mechanical durability, these flat bars are widely used in industries where performance under extreme conditions is crucial. Our Inconel 718 Flat Bars cater to diverse applications in aerospace, chemical, marine, and power generation industries across Tamil Nadu, Andhra Pradesh, Karnataka, Telangana, Puducherry, and Andaman & Nicobar Islands..
Specifications and Standards: Rose Metal Industries supplies Inconel 718 Flat Bars in accordance with international standards such as ASTM B443, AMS 5662/5663, and ASME SB443. These flat bars are available in hot-rolled, cold-rolled, and precision-turned forms with mill finish or polished surface. Each product undergoes stringent testing, including dimensional inspection, tensile testing, hardness testing, PMI, and MTC certification, ensuring consistency and reliability..
Chemical Composition: Inconel 718 Flat Bars are composed primarily of Nickel (50–55%), Chromium (17–21%), Iron (balance), Niobium + Tantalum (4.75–5.5%), Molybdenum (2.8–3.3%), Titanium (0.65–1.15%), and Aluminum (0.2–0.8%). This chemical composition imparts excellent resistance to oxidation, pitting, and high-temperature creep, making it suitable for critical industrial environments and high-performance engineering applications worldwide..
Mechanical Properties: Inconel 718 Flat Bars exhibit superior mechanical properties, with tensile strength ranging from 1240 to 1400 MPa, yield strength around 1030 MPa, elongation of 12–20%, and hardness of 35–45 HRC, depending on heat treatment. These characteristics make the flat bars ideal for structural, mechanical, and high-stress applications in industrial plants and marine or aerospace structures.
| Property | Typical / Standard |
|---|---|
| Grades | Inconel 718 (UNS N07718, ASTM B637, AMS 5662/5663) |
| Standards | ASTM B637, AMS 5662, ASTM B670, ASME SB637 |
| Forms | Hot-rolled flat bars, cold-rolled bars, precision ground bars |
| Surface Finish | Mill, polished, bright, or custom finishes |
| Testing | Dimensional, tensile, hardness, PMI, MTC |
Chemical Composition (typical ranges, wt %)
| Element | Inconel 718 |
|---|---|
| Nickel (Ni) | 50–55 |
| Chromium (Cr) | 17–21 |
| Iron (Fe) | Balance |
| Niobium (Nb + Ta) | 4.75–5.5 |
| Molybdenum (Mo) | 2.8–3.3 |
| Cobalt (Co) | ≤1 |
| Aluminum (Al) | 0.2–0.8 |
| Titanium (Ti) | 0.65–1.15 |
| Carbon (C) | 0.08 max |
| Manganese (Mn) | 0.35 max |
| Silicon (Si) | 0.35 max |
Mechanical Properties (typical)
| Property | Typical Value | Notes |
|---|---|---|
| Tensile Strength (UTS) | 1,240 – 1,515 MPa | Depends on heat treatment |
| Yield Strength | 1,035 MPa min | Solution treated & aged |
| Elongation | 12–20% | Varies with thickness |
| Hardness | 300–400 HB | Depending on temper |
Equivalent Grades & Designations
| Common Name | ASTM / AISI | UNS | EN |
|---|---|---|---|
| Inconel 718 | B637 / B670 | N07718 | – |
Dimension Chart — Flat Bar (Common sizes)
Standard widths and thicknesses supplied in mm & inch.
| Width (mm) | Thickness (mm) | Lengths (mm) | Tolerance |
|---|---|---|---|
| 10–200 | 3–50 | 1000–6000 | Custom |
Typical Applications
- Aerospace turbine and jet engine components
- High-temperature chemical processing equipment
- Marine engineering & saltwater-resistant structures
- Oil & gas industry structural components
- Heat exchangers, furnace parts, and valves
- General high-strength fabrication applications
Dimensions and Availability: Our Inconel 718 Flat Bars are available in standard thicknesses ranging from 6 mm to 50 mm, widths from 25 mm to 200 mm, and lengths from 1000 mm to 6000 mm. Custom sizes, cut-to-length, and precision machining services are available for clients across Tamil Nadu, Andhra Pradesh, Karnataka, Telangana, Puducherry, and Andaman & Nicobar Islands, ensuring exact fit for specialized projects..
Applications: Inconel 718 Flat Bars are extensively used in heat exchangers, chemical and petrochemical processing equipment, turbine components, structural frameworks, marine and aerospace applications, and high-temperature furnace components. The combination of high corrosion resistance, thermal stability, and strength makes these flat bars a reliable choice for critical operations in demanding environments globally..
Frequently Asked Questions (FAQ)
Q1: What is Inconel 718 Flat Bar used for?
A: Inconel 718 Flat Bars are used in high-temperature and high-stress applications such as aerospace components, turbine parts, chemical processing equipment, marine engineering, and structural frameworks, offering excellent corrosion and oxidation resistance.
Q2: Do you provide mill test certificates (MTC)?
A: Yes — Rose Metal Industries issues MTCs and can facilitate third-party inspection and PMI/chemical analysis on request for Inconel 718 Flat Bars.
Q3: What standards do your Inconel 718 Flat Bars comply with?
A: Our Inconel 718 Flat Bars comply with international standards including ASTM B443, AMS 5662/5663, and ASME SB443. We can also supply customer-specified standards based on project requirements.
Q4: Can you supply custom sizes and finishes?
A: Yes — we offer cut-to-length, custom widths, thicknesses, surface finishes (mill, polished, or precision-turned), and custom tolerances to meet project specifications across Tamil Nadu, Andhra Pradesh, Karnataka, Telangana, Puducherry, and Andaman & Nicobar Islands.
Q5: How should I choose between Inconel 718 and other superalloys?
A: Inconel 718 is preferred for extreme high-temperature strength, corrosion resistance, and fatigue life. For specific applications like marine, chemical, or aerospace, our sales team can advise on the optimal alloy and temper based on performance requirements.