The AMS 5666 standard is a standard for supplying alloys similar to Inconel 625 for aerospace applications. It covers a variety of product forms, including forgings, extrusions, and rings, although we are most concerned with the warehousing and distribution of solid bars.

 What is AMS 5666?

AMS stands for 'Aerospace Material Specification', and AMS 5666 is one of thousands of documents that cover the manufacture of materials and products used in aerospace applications. AMS standards are published and maintained by the SAE organization. Formerly known as the Society of Automotive Engineers, this US-based association focuses on global transportation industries such as aerospace, automotive, and commercial vehicles.

 The differences between the composition defined by AMS5666 and other product standards such as API 6A, ASTM B446 and NACE MR0175/ISO 15156-3 are relatively small. Therefore, it is possible to produce a single product that meets all of these diverse specifications, whether for the aerospace, oil and gas or chemical processing industries. Apmetal meets this AMS5666 specification and can therefore be supplied for aerospace purposes, although many of our customers focus on other applications.

Inconel 625 is a nickel-based alloy, also known in the Unified Numbering System (UNS) as N06625, Alloy 625 or DIN 2.4856. Inconel 625 was introduced in 1964 after being developed by Special Metals Corporation and was soon used in power plant components due to its high temperature oxidation resistance.

 Inconel 625 achieves a fairly high strength through the addition of molybdenum and niobium to the nickel-chromium base, but not as high as Inconel 718. However, due to the high chromium and molybdenum content, it has a high corrosion resistance in the harshest environments.

Alloy 625 is certainly one of the most expensive alloys we offer, with a high nickel content (>58%). However, it still performs well at temperatures above 800°C. Note: Special Metals recommends operating temperatures from cryogenic to 980°C for their Inconel 625 product, although mechanical properties begin to degrade significantly from 650-700°C.

 The high nickel content of Inconel 625 ensures that it forms a protective oxide layer when exposed to high temperatures, thus preventing further oxidation. With this high temperature resistance, Inconel 625 is a good candidate for aerospace applications. Engine parts towards the exhaust side are often machined from Alloy 625, such as nozzles, seals, heat shields, valves and pins.

 Please contact Apmetal Co., Ltd. immediately for product consultation and quotation support

Apmetal Co., Ltd.

Hotline: 0899507588 / 0941358139

Tel: 02573866879

Mail: Contact@apmetal.net

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