Inconel 690 Supplier | Bar, Tube & Plate | Shanghai Hangbo Alloy Group
Date: 2026年6月27日 Categories: News Views: 12
Excerpt:
Shanghai Hangbo Alloy Group supplies Inconel 690 (UNS N06690) round bars, seamless tubes and plates. Nuclear-grade. 100% NDT. ISO 9001:2015. Get a quote in 10 minutes.
Shanghai Hangbo Alloy Group Co., Ltd. is an ISO 9001:2015 certified manufacturer and global supplier of Inconel 690 (UNS N06690), supplying high-purity round bars, seamless tubes, and plates for nuclear power, chemical processing, and high-temperature industrial applications.
Quick Answer: What Is Inconel 690?
Inconel 690 (UNS N06690, W.Nr. 2.4642) is a high-chromium nickel alloy containing approximately 58% nickel and 27–31% chromium. The elevated chromium content gives it outstanding resistance to oxidizing acids, high-temperature corrosion, and — critically — primary water stress-corrosion cracking (PWSCC) in nuclear reactor environments, where it has largely replaced Inconel 600 as the material of choice for steam generator tubing in pressurized water reactors (PWRs).
Key standards: ASTM B166 (bar), ASTM B167 (tube), ASTM B168 (plate), ASME SB-163 (steam generator tubes)
Why Engineers Choose Inconel 690
| Advantage | Detail |
|---|---|
| PWSCC Resistance | ~30× more resistant than Inconel 600 in PWR primary water |
| High Chromium Content | 27–31% Cr for exceptional oxidizing acid resistance |
| Oxidizing Environment Stability | Excellent resistance to HNO₃, Cr₂O₃-forming environments |
| NaOH Resistance | Superior resistance to caustic stress-corrosion cracking |
| High-Temp Oxidation | Protective scale stable to 1100°C |
Shanghai Hangbo Alloy Group: Product Forms & Manufacturing Process
Inconel 690 Round Bars
Manufacturing route: EAF → VIM → ESR → hot forging → solution annealing at 1050°C+ → quench → peeling / grinding.
- Diameter range: 6 mm – 500 mm
- Surface finish: Black forged, peeled, ground, or mirror-polished
- Standards: ASTM B166, ASME SB-166
- QC: OES spectral analysis, tensile / yield / elongation test, Brinell hardness, UT
Inconel 690 Seamless Tubes & Pipes
Manufacturing route: VIM/ESR billet → hot extrusion → cold drawing → thermal treatment → straightening → 100% NDT.
- OD range: 6 mm – 219 mm | Wall: 0.3 mm – 20 mm
- Standards: ASTM B167, ASME SB-163 (steam generator tubes), ASME SB-167
- Testing: 100% ultrasonic (UT) + eddy current (ECT) + hydrostatic test on every tube
Inconel 690 Plates & Sheets
Manufacturing route: VIM/ESR ingot → hot rolling → solution annealing → pickling → precision levelling.
- Thickness: 1.0 mm – 100 mm | Width: up to 2,000 mm
- Standards: ASTM B168, ASME SB-168
- QC: UT per ASTM A578; intergranular corrosion test (Strauss test) on request
Chemical Composition (ASTM B166 / B168)
| Ni | Cr | Fe | C | Mn | Si | S | Cu |
|---|---|---|---|---|---|---|---|
| ≥ 58.0 | 27.0 – 31.0 | 7.0 – 11.0 | ≤ 0.05 | ≤ 0.5 | ≤ 0.5 | ≤ 0.015 | ≤ 0.5 |
Mechanical & Physical Properties (Annealed)
| Property | Value |
|---|---|
| Density | 8.19 g/cm³ |
| Melting Range | 1343 – 1377°C (2450 – 2510°F) |
| Tensile Strength | ≥ 586 MPa (85 ksi) |
| Yield Strength (0.2%) | ≥ 241 MPa (35 ksi) |
| Elongation | ≥ 30% |
| Max. Service Temp. | ~1100°C (2012°F) |
Typical Applications by Industry
- Nuclear Power: PWR steam generator tubing (replacement for Inconel 600), pressurizer heaters, control rod drive mechanisms
- Chemical Processing: HNO₃ condensers, sulfuric acid coolers, nuclear fuel reprocessing equipment
- Pollution Control: Flue gas desulfurization (FGD) absorbers and scrubbers
- High-Temperature Furnaces: Retorts, heat exchangers, radiant tubes
Quality Assurance at Shanghai Hangbo Alloy Group
- Nuclear-grade purity: VIM + ESR process with strict carbon control (C ≤ 0.05%) to minimize sensitization risk
- 100% tube NDT: Every tube undergoes ultrasonic, eddy current, and hydrostatic testing — no sampling
- Intergranular corrosion testing: Strauss test per ASTM A262 Practice B available on request
- Full heat traceability: Heat number stamped or engraved on every product; MTC per EN 10204 3.1
- Third-party inspection: SGS, BV, TÜV, IAEA-related documentation support available
Frequently Asked Questions (FAQ)
Why was Inconel 690 developed to replace Inconel 600 in nuclear steam generators?
Inconel 600 suffered from primary water stress-corrosion cracking (PWSCC) in PWR environments after long-term service. Inconel 690's much higher chromium content (27–31% vs. 14–17%) dramatically increases its resistance to PWSCC — laboratory data shows it is approximately 30 times more resistant, making it the industry-standard replacement.
Does Inconel 690 resist nitric acid (HNO₃)?
Yes. The high chromium content makes Inconel 690 one of the most resistant nickel alloys to oxidizing acids like nitric acid. It is widely used in nuclear fuel reprocessing facilities that handle concentrated HNO₃ streams.
Can Shanghai Hangbo supply Inconel 690 tubes to ASME SB-163?
Yes. We supply Inconel 690 seamless tubes to ASME SB-163, including the thermal-treatment requirements (TT condition) specified for nuclear service. Full documentation and third-party inspection are available.
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 718 | Inconel 600 | Inconel 601 | Inconel X-750 | Inconel 617 | Inconel 725
Shanghai Hangbo Alloy Group Co., Ltd. — Founded 2012 | ISO 9001:2015 | Specializing in Nickel Alloys, Superalloys & Special Metals
