Inconel 718 Supplier | Bar, Tube & Plate | Shanghai Hangbo Alloy Group
Date: 2026年6月27日 Categories: News Views: 13
Excerpt:
Shanghai Hangbo Alloy Group supplies Inconel 718 (UNS N07718) round bars, seamless tubes and plates. AMS 5662 / ASTM B637 certified. ISO 9001:2015. Quote in 10 min.
Shanghai Hangbo Alloy Group Co., Ltd. is an ISO 9001:2015 certified manufacturer and global supplier of Inconel 718 (UNS N07718), providing precision-quality round bars, seamless tubes, and plates for aerospace, oil & gas, and power generation industries worldwide.
Quick Answer: What Is Inconel 718?
Inconel 718 is a precipitation-hardenable nickel-chromium-iron alloy (UNS N07718) that delivers exceptional tensile, fatigue, creep, and rupture strength at temperatures up to 704°C (1300°F). Its unique chemistry — strengthened by niobium-rich γ″ (gamma double prime) phase — allows excellent weldability without post-weld cracking, making it the most widely used superalloy in gas turbine and aerospace applications.
Key standards: AMS 5662 / AMS 5664 (bar), AMS 5596 (sheet/plate), ASTM B637 (bar), ASTM B670 (plate)
Why Engineers Choose Inconel 718
| Advantage | Detail |
|---|---|
| High Strength | Tensile strength ≥ 1240 MPa after age hardening |
| Weldability | Superior weld-crack resistance; no PWHT required |
| Temperature Range | Maintains strength from −253°C up to 704°C |
| Fatigue Resistance | Excellent cyclic fatigue life for rotating components |
| Oxidation Resistance | Protective oxide scale to 1000°C |
Shanghai Hangbo Alloy Group: Product Forms & Manufacturing Process
Inconel 718 Round Bars
Manufacturing route: EAF → VIM → VAR (triple melt) → hot forging → solution anneal + age hardening → peeling / grinding / polishing.
- Diameter range: 10 mm – 600 mm
- Surface finish: Black, peeled (h11 tolerance), ground (h9), polished
- Standards: ASTM B637, AMS 5662, AMS 5664
- QC: 100% UT per AMS 2631; MTC per EN 10204 3.1
Inconel 718 Seamless Tubes & Pipes
Manufacturing route: VIM/VAR billet → hot extrusion → cold rolling (pilger) → cold drawing → stress-relief annealing → NDT.
- OD range: 6 mm – 273 mm | Wall thickness: 0.5 mm – 25 mm
- Standards: ASTM B983, AMS 5589, AMS 5590
- Testing: 100% hydrostatic + eddy current + UT
Inconel 718 Plates, Sheets & Strips
Manufacturing route: VIM/VAR ingot → hot rolling → solution anneal → pickling → levelling.
- Thickness: 1.0 mm – 150 mm | Width: up to 2,000 mm
- Standards: ASTM B670, AMS 5596, AMS 5597
- QC: Grain size check (ASTM E112), UT per ASTM A578
Chemical Composition (AMS 5596 / ASTM B670)
| Ni | Cr | Fe | Mo | Nb+Ta | Ti | Al | C |
|---|---|---|---|---|---|---|---|
| 50.0 – 55.0 | 17.0 – 21.0 | Bal. | 2.8 – 3.3 | 4.75 – 5.50 | 0.65 – 1.15 | 0.20 – 0.80 | ≤ 0.08 |
Mechanical & Physical Properties
| Property | Annealed | Age-Hardened (AMS 5662) |
|---|---|---|
| Tensile Strength | ≥ 965 MPa | ≥ 1240 MPa |
| Yield Strength (0.2%) | ≥ 550 MPa | ≥ 1030 MPa |
| Elongation | ≥ 25% | ≥ 12% |
| Hardness | ≤ 36 HRC | 36 – 45 HRC |
| Density | 8.19 g/cm³ | 8.19 g/cm³ |
| Melting Range | 1260 – 1336°C | — |
Typical Applications by Industry
- Aerospace: Turbine discs, compressor blades, engine casings, fuel nozzles
- Oil & Gas: Wellhead equipment, valve bodies, high-pressure fasteners, completion tools
- Power Generation: Gas turbine components, heat shields, combustion liners
- Automotive: High-performance exhaust components, turbocharger wheels
Quality Assurance at Shanghai Hangbo Alloy Group
- Triple-melt process (EAF + VIM + VAR): guarantees homogeneous chemistry and ultra-low inclusion content
- In-process heat treatment monitoring: time-temperature recording for every furnace cycle
- Final NDT: 100% ultrasonic + magnetic particle or liquid penetrant inspection
- Full documentation: MTC (EN 10204 3.1), grain size reports, hardness certificates; SGS/BV/TÜV available
Frequently Asked Questions (FAQ)
What is the difference between AMS 5662 and AMS 5664?
AMS 5662 covers Inconel 718 bar in the solution-annealed and precipitation-hardened condition; AMS 5664 covers bar in the annealed (solution-annealed only) condition. The key difference is the final heat treatment state and the resulting mechanical property requirements.
Is Inconel 718 suitable for cryogenic applications?
Yes, Inconel 718 retains good ductility and toughness at cryogenic temperatures (down to −253°C), making it suitable for liquid hydrogen and LNG handling systems.
Can Shanghai Hangbo supply Inconel 718 to API or NACE standards?
Yes. We supply Inconel 718 compliant with NACE MR0175/ISO 15156 for sour service applications and can provide API 6A material traceability documentation.
What is the lead time for custom Inconel 718 bars?
Standard stocked sizes can be shipped within 3–7 business days. Custom-forged sizes typically require 4–8 weeks, depending on diameter and quantity. Contact us for a precise lead time.
Contact Shanghai Hangbo Alloy Group
Get a quote within 10 minutes.
🌐 Website: www.nickel-alloy.com
📧 Email: specialalloy001@gmail.com
📱 WhatsApp / Phone: +86 13611656360
📍 Headquarters: Shanghai, China | Agents in 32 countries worldwide
Related grades: Inconel 625 | Inconel 600 | Inconel 601 | Inconel X-750 | Inconel 617 | Inconel 690 | Inconel 725
Shanghai Hangbo Alloy Group Co., Ltd. — Founded 2012 | ISO 9001:2015 | Specializing in Nickel Alloys, Superalloys & Special Metals
