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AMS6557 - Steel, Bars, Wire, and Forgings, 9 V – 5.25 Cr – 1.3 Mo (1.80 – 1.95C), Powder Metallurgy Product, Hot Isostatically Pressed

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Document Number: AMS6557
Project Initiation: 12-21-2010
Project Number:
Revision Number:
Sponsor Name: Olivier Laurent
Title
Steel, Bars, Wire, and Forgings, 9 V – 5.25 Cr – 1.3 Mo (1.80 – 1.95C), Powder Metallurgy Product, Hot Isostatically Pressed
Scope
This specification covers a premium aircraft-quality, high-alloy tool steel in the form of bars, wire, forgings, and forging stock. These products have been used typically for critical parts, such as bearings operating under heavy loads and high speeds at moderate temperatures and subject to very rigid inspection standards, but usage is not limited to such applications.
Rationale
AMS6557 is a new specification to cover UNS T11409, a high alloy tool steel, in the form of gas-atomized and HIP-consolidated solid bar products, forgings and forging stock.
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