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Aluminum 6061-T651

Material type: Metal, Corrosion resistance, Non-magnetic

Aluminum 6061-T651 is commonly used in aerospace, automotive and construction industry, as it is valued for its high strength, excellent machinability, and good weldability. The "T651" designation indicates that the material has been heat-treated to a specific level of hardness.

Process compatibility

CNC Milling CNC Turning

Material Color

Silver white

Material advantages

It has excellent processing performance, welding properties and electroplating capabilities, and also possesses certain corrosion resistance and toughness. After processing, it is usually not prone to deformation. It is applied in aerospace, shipbuilding, and mechanical equipment manufacturing.

Material shortcomings

Not suitable for ultra-high load and high rigidity extreme working conditions. The plasticity is average. Not suitable for large-angle bending or deep stretching forming.

Recommended description

6061-T651 is pre-stretched to eliminate residual stresses from quenching, making it highly resistant to deformation during precision CNC machining of thick plates. It offers excellent dimensional stability, good corrosion resistance, and superior anodizing performance, making it ideal for high-precision structural components under medium loads.

Properties

Name
Ultimate tensile strength	290 - 330 MPa
Yield strength	250 -270 MPa
Young's modulus (modulus of elasticity)	69 - 70 GPa
Elongation at break	8 - 11 %
Corrosion resistance	High
Magnetism	Non-magnetic
Weldability	High
Maximum service temperature	170 °C
Thermal expansion coefficent	23.6 - 24 × 10⁻⁶ /℃
Thermal conductivity	167-170 W/(m⋅°C)
Electrical resistivity	NA
Post-Processing	Annealing & Cold working
Anodizing compatibility	Suitable