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We are specialists in engineering materials support to improve the aerospace MRO supply chain.

Smiths MRO is a sub-divsion of a larger business - Smiths Advanced Metals.

Smiths MRO focuses on raw material support for the global aircraft maintenance, repair and overhaul market. Our business is supported by a broad and diverse stock range with a dedicated team that provides outstanding service levels required for our industry.

Our stock range is selected to support aerospace repair applications.

17-4PH Sheet (AMS 5604)

Precipitation Hardening Stainless Steel

We stock 17-4PH stainless sheet to AMS 5604.

17-4PH stainless steel is a precipitation hardening steel, which is available in sheet form to specification AMS 5604.

17-4PH is known for its good corrosion resistance, excellent strength and high hardness. The wear-resistant characteristics of the alloy are outstanding. In sheet form, uses include aircraft skins and various aircraft parts.

About 17-4PH Sheets

17-4PH is the most popular precipitation hardening stainless steel. Our sheets represent a highly versatile alloy due to the variety of heat treatments available, which affect the resulting mechanical properties. High hardness and strength are achievable after a simple heat treating process. Machinability and fabricability are also good, particularly in lower tempers. Further strengthing is possible with subsequent heat treatment. Improved formability is possible if heat-treating is applied before cold working. 17-4PH also possesses good welding capabilities.

Commercial Applications

17-4PH finds extensive use in the MRO and aerospace sector in aircraft skins, valve components, turbine blades and engine components. The ability to manipulate the material's mechanical properties with different heat treatments makes the product highly versatile and affords numerous commercial engineering and fabrication opportunities.

Stock & Specifications

Smiths MRO stock sheets certified to specification AMS 5604 in condition A, which can then be heat treated to various other conditions, including H900, H925, H1025, H1050, H1075, H1100 and H1150.

Our sheet range are from 0.032" up to 0.125" thickness, though other sizes are available with short lead times. We also guillotine your sheets in-house to your size requirements and can vinyl coat your material to protect the surface during transit.

Product Features:

    AMS 5604
    H900, H925, H1025, H1050, H1075, H1100 and H1150

    Aircraft skins
    Turbine blades
    Engine components
    Valve components

    Broad range of tempers
    High strength
    Outstanding wear resistance

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