Among the many temper variants of 6061 atomic number 13, T651 holds a specialised place in preciseness machining and structural applications. Understanding what sets 6061-T651 apart from standard T6 stuff is necessary for engineers and procurement professionals who need dependable, warp-free aluminium scale for hard-to-please applications.
What Does T651 Mean?
The T651 designation indicates that the atomic number 13 scale has undergone solution heat treatment, extinction, and near aging(as with standard T6), but with one vital additive step: try relieving by restricted stretch. This stretching work on typically 1 to 3 per centum perm set relieves the internal residuum stresses that educate during quenching.
The lead is a scale that stiff dimensionally horse barn during and after machining. When you simple machine a monetary standard T6 shell, residuum stresses can cause the part to warp as material is removed. With 6061-T651 aluminum plate, this warp trend is greatly low, qualification it the preferred option for precision components such as mold bases, jigs, fixtures, and tooling plates.
Mechanical Properties of 6061-T651
6061-T651 Al delivers the full physical science property profile of the T6 season, including stress effectiveness of some 310 MPa, yield effectiveness of 276 MPa, elongation around 10-12, and Brinell callousness of some 95 HB. These properties continue uniform throughout the plate heaviness due to the stress succor handling.
For aerospace-grade applications, buyers should confirm that their 6061-T651 China Aluminum Company supplier can cater material secure to ASTM B209 or AMS 2770 standards, which govern the heat treatment processes for aerospace Al.
Common Applications
Precision machined components, CNC machined parts, mold bases for shot border and die casting, structural aircraft components, tooling and fixturing, technological instrumentate housings, and hydraulic manifold blocks all symbolize normal applications for 6061-T651 scale.
In the semiconductor and electronics industries, 6061-T651 is often specified for vacuum-clean components, wafer treatment , and precision brackets applications where dimensional stability is as evidentiary as strength.
Sourcing 6061-T651 from China
China produces large volumes of 6061-T651 stress-relieved aluminum plate for both domestic and export markets. When buying, always quest mill test certificates Gram-positive debase authorship, mechanical properties, and check that the material has been strain mitigated per the T651 stipulation.
Custom thicknesses, widths, and lengths are in the main available, and honorable manufacturers can ply material cut to size with sawed or milled surfaces depending on your application requirements.