6061 T6 T651 Aluminum Bar

6061 Alloy aluminum bar is a heat-treatable, strengthenable aluminum alloy whose main components are magnesium (Mg) and silicon (Si). It possesses moderate strength, good weldability, and corrosion resistance.

Production follows standard procedures, and common forms include T651 pre-stretched material. It possesses moderate strength, excellent corrosion resistance, and strong processing adaptability.

6061-T6 and 6061-T651 are two common states of 6061 aluminum alloy. T6 indicates that it has undergone solution treatment and artificial aging, while T651 indicates that it has undergone tensile straightening on the basis of T6 to eliminate internal stress and improve dimensional stability.

In terms of manufacturing process, 6061 aluminum bar is typically produced by extrusion molding, where aluminum alloy billets are extruded into bars of the required shape and size under high temperature and pressure.

These bars are then subjected to solution treatment and artificial aging to achieve the desired mechanical properties.

6061-T6 and 6061-T651 hard anodized aluminum bar has a hardness of HV500, are corrosion-resistant and wear-resistant, and are suitable for aerospace and automotive manufacturing.

This material boasts a tensile strength of 310 MPa, a yield strength of 276 MPa, a hardness of 95 HB, and a thermal conductivity of 167 W/(m·K).

With the increasing demand for lightweight materials, AL6061-T6 round bars are developing towards higher precision and customization.

For example, the demand for short bars with diameters of 10-50mm and lengths of ≤3000mm is surging in the new energy vehicle sector to adapt to integrated die-casting processes.

Equivalent Names: A96061, EN AW-6061, AlMgSiCu, HE20, AA6061, 3.3211

Tempers: T6, T651, T6511

Thickness: 0.08″ – 9.8″ (2 – 250mm)

Width: 0.2″ – 11.8″ (5 – 300mm)

Length: 3m / 6m / 12m, customizable for cutting

Edge Processing: Right angle, rounded corner, R rounded corner

Production Process: Extruded, Aluminum plate sawing

ASTM Standards: ASTM B211, ASTM B221

AMS Standards: AMS 4115, AMS 4116, AMS 4117, AMS 4128, AMS-QQ-A-225/8, AMS 4150, AMS 4160, AMS 4161, AMS-QQ-A-200/8

Certifications: ISO 9001, AS9100, NADCAP (HT & NDT)

Inspection Methods: Ultrasonic Testing (ASTM B594), Metallography, Mechanical Property Testing

6061- T6 / T651 aluminum bars are widely in application of aerospace fixtures, electrical fixtures, and communications.

It is also widely used in automated mechanical parts, precision machining, mold manufacturing, electronics and precision instruments, SMT, and PC board soldering carriers, etc.

6061 Aluminum Bar Vs 6063 Aluminum Bar

6061 and 6063 aluminum rods are two commonly used aluminum alloy materials, differing significantly in chemical composition, mechanical properties, processing technology, and application areas.

6061 aluminum bars have higher strength and are suitable for load-bearing structures; while 6063 aluminum rods have superior extrusion performance and are widely used in building profiles.

6063 aluminum alloy is a typical extrusion alloy, renowned for its excellent extrusion and surface treatment properties.

Its main composition is similar to 6061, but with lower magnesium and silicon content, resulting in slightly lower strength than 6061, but better extrusion performance, making it suitable for producing profiles with complex cross-sections.

Mechanical Properties Comparison between 6061 and 6061 alloy bar

Strength:

6061 aluminum bar in the T6 state have a tensile strength exceeding 290 MPa and high yield strength, making them suitable for high loads.

6063 aluminum rods in the T6 state have a tensile strength of approximately 180-230 MPa, lower strength but higher elongation (14%-16%), resulting in stronger impact resistance.

Corrosion Resistance:

Due to fewer impurities and the absence of copper, 6063 aluminum rods exhibit superior corrosion resistance compared to 6061, especially after anodizing, resulting in a more uniform and aesthetically pleasing surface.

6061 aluminum bars have good machinability, but require heat treatment to restore strength after welding; 6063 aluminum bars have a wider welding process window and less impact on strength.