The 6000 series aluminum alloys are aluminum-based alloys primarily alloyed with magnesium (Mg) and silicon (Si), with typical compositions of 0.6-1.2% Mg and 0.4-1.8% Si. These alloys form Mg₂Si strengthening phases, offering a balanced combination of good formability, weldability, and medium strength, earning them the reputation as "the most widely used aluminum alloys in engineering applications."
Core Characteristics
6000 series aluminum alloys exhibit the following outstanding features:
Balanced Strength and Plasticity: Tensile strength reaches 200-350 MPa with elongation maintained at 8-20%
Excellent Formability: Particularly suitable for extrusion processing, capable of producing complex cross-section profiles
Good Corrosion Resistance: Natural oxide film provides basic protection, with significant anodizing effects
Superior Weldability: Compatible with various welding processes including TIG and MIG
Heat Treatment Strengthening: Strength can be significantly improved through aging treatments like T5 and T6
Comparison of Typical Grades
|
Grade |
Main Composition(%) |
Temper |
Tensile Strength(MPa) |
Typical Applications |
|
6061 |
0.8-1.2Mg |
T6 |
310 |
Aerospace structural components |
|
6063 |
0.45-0.9Mg |
T5 |
215 |
Architectural window/door profiles |
|
6082 |
0.6-1.2Mg |
T6 |
340 |
Automotive structural parts |
|
6005 |
0.4-0.6Mg |
T5 |
260 |
Rail transit vehicle bodies |
Major Application Fields
Construction Engineering (~45% share): Curtain walls, doors/windows, decorative profiles
Transportation (30%): Automotive crash beams, high-speed train bodies, ship superstructures
Electronics (15%): Heat sinks, enclosure structures
Other Industries (10%): Machinery frames, solar mounting systems
