6068 aluminium sheet 6061 t6 are two aluminum alloy terms that can appear together in engineering and purchasing searches, but they should not be treated as the same material. Both belong to the 6000 series of heat-treatable aluminum alloys, while 6061-T6 is much more widely standardized and used for structural aluminum sheet and plate.

For buyers looking for aluminum sheet, the key questions are usually alloy strength, temper, thickness, mechanical properties, availability, and price. This guide explains 6068 aluminum, compares 6068 aluminum vs 6061, reviews 6061-T6 aluminum sheet specifications, and explains what to check when choosing a 6061-T6 aluminum sheet supplier.

1. What Is 6068 Aluminum?

6068 aluminum is a wrought 6xxx series aluminum alloy. Like other 6000 series alloys, it is based mainly on aluminum with magnesium and silicon as important alloying elements. It can be heat treated to obtain higher strength tempers such as T6.

Available technical literature describes 6068 as an Al-Mg-Si wrought alloy and reports applications in transportation, engineering, and structural components. 6068-T6 materials can also be found in sheet and other wrought product forms. However, availability depends strongly on the market, product form, and applicable material standard.

This is important when purchasing 6068 aluminium sheet. A supplier should confirm the exact alloy designation, applicable standard, temper, thickness range, mechanical properties, and inspection documents instead of simply quoting the material as “6068 aluminum.”

6068 aluminum strength

6068 aluminum strength depends on the temper and product form. T6 heat treatment increases strength compared with softer conditions. For this reason, the alloy number alone is not enough when comparing aluminum materials.

For an engineering purchase, always compare the complete designation, such as 6068-T6, rather than comparing 6068 with 6061-T6 only by alloy number.

2. Is 6068 Aluminum Good?

6068 aluminum can be a useful engineering alloy when its required product form, temper, and standard are available. It belongs to the heat-treatable 6xxx family, which is known for a combination of strength, corrosion resistance, formability, and weldability.

The main consideration is not simply whether 6068 aluminum is “good.” The better question is whether 6068 meets the mechanical and dimensional requirements of your project. If the project specification calls for a widely available structural sheet with established ASTM documentation, 6061-T6 may be easier to source.

The Aluminum Association describes the 6xxx series as heat-treatable aluminum alloys with a combination of formability, weldability, corrosion resistance, and moderately high strength. 6061 is the most widely used alloy in this series. :contentReference[oaicite:1]{index=1}

3. What Type of Aluminum Is 6061-T6?

6061-T6 is a heat-treatable 6000 series aluminum alloy. Its main alloying elements are magnesium and silicon, with smaller controlled additions of copper, chromium, manganese, zinc, and other elements.

The “6061” identifies the alloy, while “T6” identifies the temper. T6 indicates a heat-treated condition designed to obtain high mechanical strength. Therefore, 6061-T6 is not a different alloy from 6061. It is 6061 aluminum in a specific heat-treated condition.

Typical data for 6061-T6 include a tensile strength around 310 MPa and yield strength around 276 MPa, although actual specification values depend on product form and thickness. NIST data list these typical values for 6061-T6/T651. :contentReference[oaicite:2]{index=2}

Why T6 matters for aluminum sheet

Two sheets made from the same 6061 alloy can have different mechanical properties when supplied in different tempers. For structural applications, buyers should therefore specify both the alloy and temper in the purchase order.

For example, an RFQ should state “6061-T6 aluminum sheet” rather than simply “6061 aluminum sheet.” This makes the required material condition clear to the supplier.

4. 6068 Aluminum vs 6061

6068 aluminum and 6061 are both 6xxx series alloys, but they are not interchangeable specifications. Their chemical compositions, product standards, mechanical properties, and commercial availability can differ.

6061 has a major advantage for international purchasing: it is a widely recognized and commonly supplied alloy for sheet, plate, bar, tube, and other products. ASTM B209 covers aluminum and aluminum-alloy sheet and plate, including heat-treatable sheet products. :contentReference[oaicite:3]{index=3}

If a drawing or technical specification specifically requires 6068, it should not be replaced with 6061-T6 without engineering approval. Conversely, if a project specifies 6061-T6, a supplier should not substitute 6068 simply because both alloys belong to the 6000 series.

5. What Is 6068 Aluminum vs 7075?

6068 and 7075 belong to different aluminum alloy families. 6068 is a 6xxx series alloy based on the aluminum-magnesium-silicon system, while 7075 is a 7xxx series alloy associated primarily with zinc alloying.

7075 is widely recognized for very high strength and is used in demanding aerospace and high-load applications. The tradeoff is that alloy selection must also consider corrosion behavior, weldability, forming, machining, and cost.

For many general structural aluminum sheet applications, 6061-T6 provides a more common balance of strength, corrosion resistance, joining characteristics, availability, and cost. The correct choice should still be based on the project's design requirements rather than strength alone.

6. What Are 6061-T6 Aluminum Sheet Specifications?

6061-T6 aluminum sheet specifications normally include alloy, temper, thickness, width, length, surface finish, applicable standard, and dimensional tolerance. ASTM B209/B209M is one important reference for aluminum and aluminum-alloy sheet and plate. :contentReference[oaicite:4]{index=4}

For engineering procurement, the specification should also state the required mechanical properties and dimensional tolerances when these are critical. ASTM B209/B209M covers flat sheet, coiled sheet, and plate products in specified alloys and tempers. :contentReference[oaicite:5]{index=5}

7. What Is the Thickness Range of 6061-T6 Sheet?

6061-T6 sheet and plate are available in different thickness ranges depending on the applicable standard, mill equipment, width, and product form. There is no single thickness range that applies to every supplier.

ASTM data show 6061-T6/T651 property requirements across multiple thickness bands, including material below 6.3 mm, 6.3–12.5 mm, 12.5–25 mm, and thicker sections. This illustrates why the specified thickness should always be included when requesting mechanical-property data. :contentReference[oaicite:6]{index=6}

For a quotation, it is better to send an exact requirement such as “6061-T6, 6 mm × 1500 mm × 3000 mm” than to ask for a general price for 6061 aluminum sheet. The exact dimensions can materially affect production and freight costs.

8. What Is the Price per kg of 6061-T6 Aluminum?

The cost of aluminum sheet changes with the aluminum market, alloy, temper, thickness, width, quantity, processing requirements, packaging, and delivery terms. For this reason, there is no single fixed price per kg for 6061-T6 aluminum sheet.

For export purchasing, buyers should compare quotations on the same basis. A factory price, FOB price, CIF price, and delivered price can be very different even when the material specification is identical.

Main factors affecting the cost of aluminum sheet

• Aluminum market price: primary aluminum and alloying costs influence the base material price.
• Alloy and temper: 6061-T6 requires heat treatment and controlled processing.
• Thickness: different gauges require different rolling and heat-treatment processes.
• Dimensions: special widths and cut-to-length orders can affect processing cost.
• Quantity: larger orders can reduce processing and packaging costs per kilogram.
• Delivery terms: freight, insurance and destination costs affect the final landed price.

If you need a current quotation, provide the alloy, temper, thickness, width, length, quantity, and destination. This gives the supplier enough information to calculate a practical price.

9. 6061-T6 Aluminum Sheet Applications

6061-T6 aluminum sheet and plate are widely used where engineers need a combination of strength, corrosion resistance, machinability, and relatively low weight. The Aluminum Association identifies 6061 as the most widely used alloy in the 6xxx series. :contentReference[oaicite:7]{index=7}

The alloy is also suitable for machining and fabrication. However, the exact application should determine whether T6, T651, T4, or another temper is appropriate.

10. 6061-T6 Aluminum Sheet Suppliers and Buying Checklist

Choosing a 6061-T6 aluminum sheet supplier is not only about finding the lowest price. A reliable supplier should be able to confirm the alloy, temper, dimensions, standard, mechanical properties, surface quality, packaging, and delivery terms.

• Confirm 6061 alloy and T6 temper.
• Confirm thickness and dimensional tolerance.
• Confirm width and length or cut-to-size requirements.
• Confirm the applicable ASTM, EN, or customer standard.
• Request a mill test certificate when required.
• Check surface condition and packaging requirements.
• Compare FOB, CIF, or other delivery terms on the same specification.

For buyers comparing 6068 aluminium sheet 6061 t6 options, the most important step is to confirm whether the required alloy is genuinely 6068 or 6061-T6. The two should not be substituted simply because both belong to the 6000 series.

11. Why Source 6061-T6 Aluminum Sheet From a Manufacturer?

Direct manufacturer sourcing can make it easier to confirm material specifications and arrange custom sizes. For aluminum sheet orders, buyers can send the required alloy, temper, thickness, width, length, quantity, and destination for quotation.

For projects that require 6068 aluminium sheet, the supplier should first confirm whether the requested alloy and product form are available under the required standard. For projects requiring 6061-T6, the purchasing specification can be stated clearly and matched with the relevant sheet or plate standard.

Send your required alloy, temper, thickness, width, length, quantity, and delivery terms to receive a detailed aluminum sheet quotation.

12. Conclusion

6068 aluminum and 6061-T6 are both heat-treatable 6000 series aluminum materials, but they have different specifications and should not be treated as interchangeable. 6068 can be considered for specialized engineering applications when the required standard and product form are available. 6061-T6 has broader international recognition and is widely used for aluminum sheet and plate.

When buying 6061-T6 aluminum sheet, always specify the complete alloy and temper together with thickness, width, length, standard, quantity, and delivery requirements. This makes supplier quotations easier to compare and reduces the risk of receiving the wrong material.