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Premium Inconel 690 (UNS N06690) bar, tube, plate supplier. High-temperature nickel alloy for aerospace, chemical processing. ASTM/ASME compliant. Get quote.
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
| Channel | Details |
|---|---|
| Website | www.nickel-alloy.com |
| specialalloy001@gmail.com | |
| hangbo@nickel-alloy.com | |
| WhatsApp / Phone | +86 13611656360 |
| Skype | +86 13611656360 |
| Address | Shanghai, China |
Applications of Inconel 690
Inconel 690 (UNS N06690) is widely used in nuclear power plant steam generator tubes, pressurized water reactors, chemical processing equipment, high-temperature electrolytic cells. The alloy maintains excellent mechanical properties at temperatures up to 800F (427C) in nuclear applications, making it suitable for demanding high-temperature service environments.
Standards & Specifications: ASTM B166, ASME SB166, ASTM B163











