British Standard BS-L...
The British Standards Institution (BSI) administers British Standards as the UK's National Standards body. British Standards L (BS-L) relate to different grades of aluminium alloys and light alloy materials such as magnesium and apply to different product forms (shapes) such as sheets/plates, bars and tubes.
Sourced from different manufacturers they are offered as their OEM parts or as parts of our own labelled (AVIATIONEU NEW ERA) product lines. They can be supplied in different Metric pre-cut ot cut-to-order (CTO) dimensions and heat treatments (tempers) and they are sold in pieces or bulk (tons). A brief overview of offered BS-L metal products commonly used in Aerospace with reference to the commercial (trade) name of the respective aluminum alloy, and their correlation to their US Standards' counterparts is included below (see table). Depending on application requirements, certain US Standard metals can be used as alternatives to their BS-L counterparts.
2014/2014A(*)
Applicable forms: plates, sheets and strips, bars, tubes as per respective BS-L Standards.
The 2014 aluminum alloy is high-strength aerospace alluminum alloy alloyed with copper (3.90-5.00%). Often includes cladding with 1050A aluminium and heat treated to T3 or T4 conditions, as in the case of sheets, to meet respective BS L163, and BS L164 Standard specifications. Clad sheets are typically used in aerospace and defense components, structural and high technology applications. Use of copper enables them to retain their high strength after their heat treatment while cladding, as part of the mill production process, enhances their corrosion resistance capabilities.
2024/2024A(*)
Applicable forms: sheets.
The 2024 aluminum alloy (with copper as the primary alloying element) is also known as aerospace grade aluminum. It is commonly used in aircraft structural applications due to its high strength and fatigue resistance and those requiring high stress & strain resistance in aviation and industrial applications. This alloy is stronger but less versatile than 6061, which is more corrosion resistant, easier to weld, and more suited to machining, but less strong than the 7075. 2024A 1050A Alclad sheets relate to BS-L Standards BS L109 and BS L110.
7075
Applicable forms: plates, sheets and strips, bars.
7075 aluminium alloy is an aluminium alloy with zinc as the primary alloying element. It is one of the most commonly used aluminium alloys for highly stressed structural applications such as aircraft structural parts. Respective BS-L Standards for different forms of 7075 aluminum include BS 2 L95 for T651 plates, BS 2 L88 for T6 clad sheets and strips, BS L160, BS L161, and BS L70 for bars.
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(*) The letter "A" in the alloy classification system indicates a modified version of the respective standard alloy with generally no distinction in material properties or performance betwwen the two.