Aluminium Alloy BS L159 2014A-T6 Sheet

Technical Data Sheet

Aluminium alloy BS L159 is the aerospace specification for 2014A-T4 bare sheet and strip. L159 is the same alloy and temper as L157, and will always meet the chemistry and mechanical requirements for both, but is produced to tighter rolling tolerances. L159 / 2014A is alloyed with copper (3.90-5.00%) giving it high strength levels of 400 N/mm² UTS minimum. As such L159 finds usage in many aerospace and defence high strength applications where is poor corrosion resistance is not a factor. Aircraft Materials stocks L159 in a wide range of sheet thicknesses ready for same day shipment. Many stock items can be dual-certified to both L157 and L159.

Chemical Composition Limits
Weight% Si Fe Cu Mn Cr Mg Ni Zn Ti+Zr Ti
Alloy L159 0.50 - 0.90 0.50 max 3.9 - 5.0 0.4 - 1.2 0.10 max 0.2 - 0.8 0.10 max 0.25 max 0.20 max 0.15 max

Typical Mechanical Properties


Grade Condition Thickness (mm) 0.2% Proof Stress Min (N/mm2) Tensile Strength Min (N/mm2) Elongation on 50mm(%)
Alloy L159 T6 0.4 - 0.8 370 430 6
Alloy L159 T6 0.8 - 1.6 380 440 7
Alloy L159 T6 1.6 - 6.0 390 440 7

Aluminium Alloy BS L159 is available in Sheet and Strip T6 (Close tolerance Rolled Sheet and Strip). For all stock availability of Aluminium BS L159 contact Sales.

Similar Specification
BS L157

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Every effort is made to ensure that technical specifications are accurate. However, technical specifications included herein should be used as a guideline only. All specifications are subject to change without notice.