Yuh-Field

What’s the difference between aluminum 6063 T5, aluminum 6063 T6, and aluminum 6061 T6?

What’s the difference between aluminum 6063 T5, aluminum 6063 T6, and aluminum 6061 T6?

The 6000 series aluminum alloy is not as strong as the 2000 series and 7000 series, but it has good corrosion resistance, good weldability, and easy forming. 6000 series alloys are represented by 6061 and 6063. 6061 is used in various structures such as towers and cranes in Europe or the United States. It has very good corrosion resistance and almost no anti-rust treatment T5 or T6 means heat-treatment level, which is related to the hardness. 

For the same product, T6 is better than T5. For most products, T5 is enough, and T6 is better. For hollow products, it would have a risk of out-of-shape when you insist on T6. 

aluminum 6063 or 6061 means the name of aluminum alloy. For the same product, aluminum 6061 is stronger than 6063. For all products, it would have a risk of a worse surface when you insist on 6061. If you insist on using 6061, and also request for surface beauty, you may get a higher price.

Practically speaking, in the general industrial field, if the shape is hollow and not a regular circle or square, we recommend not to specify the material 6061. Although 6061 is only one number behind 6063, the difficulty of squeezing is very different. The cost is very high, and coupled with the T6 process, it is easy to cause deformation. 

ent is required in coastal areas. The endurance of 6061T6 is more than 25KG/mm2, almost Equal to the yield point of SS41 steel. In Japan, 6061 is more commonly used for rivets or bolt fittings. The 6063 alloy is easy to extrude and process, and it is easy to obtain a variety of cross-sectional profiles. The use is mainly in the window frame of the building, and it is usually used after the anode.

aluminum6063 T5

aluminum6063 T6

aluminum6061 T6

Difficulty of extrusion

easiest

Second easy 

the hardest 

Extrusion molding application shape

Any shapes (especially hollow products)

Any shapes (using the recommended thickness)

circle

square

Hardness

Softest 

WB10-14

Second hard

WB12-15

Hardest 

WB13-16

For example, the following product shapes are suitable for 6063T5 or 6063T6 production If the thickness is less than 1.5mm (0.06 inch), we strongly recommend that only 6063 T5 is more in line with the production cost.

According to YUH FIELD’s experience, aluminum 6063 T6 is sufficient for most products. Many buyers will insist on 6061 because after extrusion, the product has processing requirements. In the processing field, a certain degree of hardness is usually required. If the hardness is insufficient, it usually leads to problems such as aluminum chip blockage and insufficient size accuracy. 

YUH FIELD committed to aluminum 6063 T5. With the most easily extruded material, the hardness will reach the high limit, meet the processing standard, maintain the smooth surface, and avoid the problem of deformation.

This is the test report of a hollow tube made of aluminum 6063 T5. 

  1. Tensile Test

#Sample Name

Modulus of

Elasticity

0.2% offset

Yield strength

Tensile strength

Elongation

(G.L=50mm)

----

GPa

MPa

MPa

%

YUH FIELD

Aluminum Tube

54.16

191

217

10

Other’s

68

145

186

12

 

  1. Hardness Test

#Sample Name

Hardness

YUH FIELD

Aluminum Tube

78Hv(0.1)

(about 70 HB)

Other’s

60 HB

 

  1. Density

#Sample Name

Density

----

g/cm³

YUH FIELD

Aluminum Tube

2.68

Other’s

2.70

Find more success story about aluminum 6063 and aluminum 6061: https://www.yfaluminumextrusion.com/success-story