Inconel 718 round bar is one of the most widely specified nickel-based superalloy bar products for high-stress and high-temperature applications.For procurement professionals, selecting the right diameter, heat treatment condition, certification level, and supplier capability is essential to control cost, ensure compliance, and avoid downstream machining or performance risks.
What is Inconel 718 round bar?
Inconel 718 (UNS N07718 / W.Nr. 2.4668) round bar is a precipitation-hardened nickel-chromium-iron alloy bar available in hot-rolled, forged, or cold-worked conditions. It offers excellent fatigue and creep resistance and maintains stable mechanical properties at temperatures up to approximately 700 °C. It is suitable for aerospace shafts and fasteners, gas turbine and power generation equipment components, and high-pressure structural components.
Inconel 718 round bars supplied by GNEE are commonly supplied in diameters from Ø6 mm to Ø450 mm, with mechanical properties that consistently exceed 1,000 MPa yield strength in the aged condition.
Inconel 718 Round Bar Specifications
| Item | Standard Range |
|---|---|
| Diameter | Ø6 mm – Ø450 mm |
| Length | 3 m, 6 m, or cut-to-length |
| Surface Condition | Black, peeled, polished, ground |
| Delivery Condition | Solution treated / Solution + aged |
| Standards | ASTM B637, AMS 5662 / 5663, EN 10204 |
Inconel 718 Round Bar Mechanical Properties (Aged Condition)
| Property | Typical Value |
|---|---|
| Yield Strength (0.2%) | 1,000–1,200 MPa |
| Tensile Strength | 1,250–1,450 MPa |
| Elongation | 12–20% |
| Hardness | 36–45 HRC |
| Density | 8.19 g/cm³ |
Inconel 718 Round Bar Chemical Composition (Typical, %)
| Ni | Cr | Fe | Nb+Ta | Mo | Ti | Al |
|---|---|---|---|---|---|---|
| 50–55 | 17–21 | Balance | 4.75–5.50 | 2.8–3.3 | 0.65–1.15 | 0.2–0.8 |
What is the hardness of Inconel 718 bar?
The hardness of Inconel 718 varies considerably depending on the heat treatment and standards used, typically ranging from 20-25 HRC (solution annealed) to 32-40+ HRC (age hardened/precipitation hardened). For example, the ASTM B637 standard specifies a minimum hardness of 331 HBW (Brinell hardness), while aerospace standard AMS 5662 may have a lower hardness (20-25 HRC), and AMS 5663 a higher hardness (32-40 HRC).
inconel 718 round bar price per kg
The price of Inconel 718 round bars varies considerably, but typically ranges from $30 to over $100 per kilogram. The exact price depends largely on market conditions, quantity purchased, supplier, bar diameter/length, and surface finish. Bulk orders (over 500 kg) usually qualify for lower prices (e.g., $30-40/kg), while smaller quantities or special specifications command higher prices. Recent quotes show that round bars conforming to AMS 5662 standards are priced at approximately $47/kg, so it is recommended that you obtain the latest quotes.
inconel 718 bar suppliers-GNEE
GNEE is a reliable supplier of Inconel 718 round bars, offering UNS N07718 / W.Nr. 2.4668 round bars with diameters typically ranging from Ø6 mm to Ø450 mm, available in solution-treated or solution-treated and aged conditions.
All Inconel 718 round bars are manufactured according to ASTM B637, AMS 5662 / AMS 5663 standards and come with EN 10204 3.1 certificates.
GNEE offers various product forms, such as hot-rolled bars, forged bars, peeled bars, polished bars, and cut-to-length bars, to meet different processing and performance requirements.
For transportation and packaging, the round bars are protected with anti-rust oil, plastic wrapping, and packaged in seaworthy wooden crates or steel strapping.
