Aluminum 6061-T6

Lightweight, rust-resistant, strong. Used in aerospace to construction, showcasing its versatility.

aluminum 6061 t6 cnc machined

Chemical Composition of Aluminum 6061-T6

The most important alloying elements are magnesium and silicon, which improve strength through precipitation hardening. Copper also contributes to precipitation hardening. Iron helps control grain structure. The other elements each play a smaller role in enhancing properties.

Chemical Composition Proportions Role of Each Element
Aluminum (Al) 95.8 to 98.6% Aluminum is the main element in the alloy and provides low density, high strength, and good corrosion resistance.
Magnesium (Mg) 0.8 to 1.2% Magnesium is added to increase the strength of the alloy through solid solution strengthening and precipitation hardening. It also improves workability.
Silicon (Si) 0.4 to 0.8% Silicon increases fluidity during casting and also provides some precipitation strengthening.
Iron (Fe) Max 0.7% Iron helps control grain structure but higher levels reduce ductility and corrosion resistance.
Copper (Cu) 0.15 to 0.4% Copper improves strength through precipitation hardening. It also increases corrosion resistance.
Chromium (Cr) 0.04 to 0.35% Chromium helps with precipitation strengthening and improves corrosion resistance.
Zinc (Zn) Max 0.25% Zinc enhances precipitation hardening but higher levels reduce corrosion resistance.
Titanium (Ti) Max 0.15% Titanium helps refine the grain structure. It also contributes to precipitation hardening.
Manganese (Mn) Max 0.15% Manganese controls grain structure and improves workability.
Other trace elements Each less than 0.05%

General Characteristics of Aluminum 6061-T6

Aluminum 6061-T6 offers optimal machinability, making it a top choice for precise CNC machining processes.

Expert CNC Machining: We Know Materials Inside Out.

Physical properties

Density 2.70 g/cm³
Corrosion resistance High
Melting Point Approximately 585°C (1,085°F)
Magnetism Non-magnetic
Coefficient of Thermal Expansion Around 23.6 μm/m-K
Thermal Conductivity Approximately 167 W/m-K
Electrical properties Approximately 43% IACS (International Annealed Copper Standard)

Mechanical properties

Ultimate Tensile Strength (UTS) Approximately 310 MPa (45,000 psi)
Yield Strength (0.2% Offset) Approximately 275 MPa (40,000 psi)
Elongation at break 12%
Modulus of Elasticity (Elastic Modulus) 69 GPa (10,000 ksi)
Fatigue Strength Approximately 96.5 MPa (14,000 psi)
Brinell Hardness About 95 HB
Vickers hardness About 107 HB

Available Surface Finishing

Anodizing Type II (Sulfuric Acid Anodizing): Provides a thin oxide layer, which can be dyed in various colors. Type III (Hard Anodizing): Produces a thicker, wear-resistant layer.
Powder Coating Electrostatically applied and cured under heat to form a hard protective or decorative layer.
Electroplating Deposition of metals like chrome or nickel onto the aluminum surface to provide a reflective finish or added corrosion resistance.
Chromate Conversion Coatings Provides good corrosion resistance and an excellent primer layer for paint or other coatings.

Types of CNC Machining Aluminum Process

The variety of aluminum machining services at AT-Machining can produce a wide range of products in different shapes and sizes.

These include CNC Milling, CNC Turning, Swiss Machining, EDM, and Grinding. Utilizing a combination of these processes is often necessary to meet the expectations for quality and accuracy set by AT-Machining and our customers.

Our team of experienced engineers can tailor the production process depending on the needs of each project, creating efficient solutions with a commitment to exceptional quality in each finishing process.

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