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

Smiths MRO is a sub-dvision 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.

We support numerous aerospace related MRO markets.

LN (International Aircraft)

Extrusions & Rolled Sections


Our extrusions and rolled sections range includes LN (international Aircraft) extrusions.

LN aerospace aluminium extrusions are commonly used angles (LN9496 & LN9087), T sections (LN9497), and Channels (LN9498) made to standard dimensions in millimetres.


The extrusions typically find use on European designed and manufactured aircraft. We can also offer LN roll-formed parts, including LN9411 rolled angles.


Common Grades

LN aerospace aluminium extrusions are commonly made in 2024 T3511, 7075 T6511 and 7075 T73511, although they can be referred to in the German equivalent Luftnummer alloys 3.1354 (2024) and 3.4364 (7075). Smiths offer a wide range of LN parts, including LN9496-XXX angles in various sizes, indicated by the three numbers after the dash.

You can view a list of the products we offer by clicking here.


Why choose Smiths MRO?

There are numerous advantages to sourcing your critical aerospace MRO raw materials from us. We offer an unrivalled service where we combine our sizeable stock range, processing services and powerful bespoke IT platform to deliver services that may not be available elsewhere.

We stock the products you need and also process your raw materials and extrusions accurately while offering ultra-fast turnaround on all products. Our experienced export team handle the shipping aspect to International locations.



Saving you time & money

We recognise that timing is everything in such a fast-paced market. An aircraft out of service represents a significant cost, and the ability to perform critical repairs places heavy reliance on the raw material supply chain.

We ensure that we have the appropriate stock inventory to support the aerospace MRO sector with a speed of service that is second to none.



Product Features:


    Click here to download a copy of our LN Extrusions info sheet

    2024 T3511
    7075 T6511 and 7075 T73511
    German equivalents: 3.1354 (2024) and 3.4364 (7075)

    In-house processing
    Rapid response
    Total traceability
    Bespoke supply

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