Trade Mark and State

6063 T5

Standard No.

GB5237.1-2008

Appearance Quality

1. The surface of the sectional material should be neat, and no presence of such defects of crackles, peeling, corrosion, bubbles, etc..

2. It is allowed to have slight pressed dents, bumps and abrasion on the surface of the sectional material. Their allowable depth is not greater than 0.07mm for a decorative surface, and is not greater than 0.10mm for a non-decorative surface, and the depth of an extruded mark of a mould is not greater than 0.03mm.

3. An end of the sectional material is allowed to have local deformation due to being sawed, and its vertical length should not exceed 10mm.

Allowable Deviation and High Accuracy of Dimensions

Mechanical Properties

Chemical Compositions

Trade Mark and State

6063 T5

Standard No.

GB5237.2-2008

The quality of the base material

Should accord with the GB5237.1-2008 regulations

The allowable deviation of the dimensions

Should accord with the GBGB5237.1-2008 regulation

The mechanical properties

Should accord with the GB5237.1-2008 regulations

The chemical compositions

Should accord with the GB5237.1-2008 regulations

Oxide Film Quality

Trade Mark and State

6063 T5

Standard No.

GB5237.4-2008

The quality of the base material

Should accord with the GB5237.1-2008 regulations

The allowable deviation of the dimensions

Should accord with the GBGB5237.1-2008 regulation

The mechanical properties

Should accord with the GB5237.1-2008 regulations

The chemical compositions

Should accord with the GB5237.1-2008 regulations

Coating Performance

Minimum local thickness

≥40μm

Color and color difference

The color of the coating should be the same as the standard color that the contract stipulates. aberration △Eab·≤1.5.

Indentation hardness (Print resistance)

≥80

Adhesive force

0grade

Impact resistance

The front of the coating, after an impact test, has no phenomenon of fracture and coming off, but it is allowed to have small wrinkles in the perimeter of a concave surface.

Cup-drawing test

After a cup-drawing test with of the indentation depth of 6mm, there should not be the phenomena of splitting and coming off on the coating.

Appearance quality

The coating of a decorative surface of the powder-sprayed sectional material should be smooth and even, and it is not allowed to have such defects as flowing marks, swelling bubbles, crackles, sticking, etc, which influence the use. It is allowed to have a slight tangerine peel phenomenon, and the degree that is allowed should be indicated by a guide sample of a material object which both the supplying and demanding sides have agreed on.

Alloy

Chemical composition (mass fraction) (%)

Si

Fe

Cu

Mn

Mg

Cr

Zn

Ti

Other

Al

Each

Total

6063

0.20～0.6

0.35

0.1

0.1

0.45～0.9

0.1

0.1

0.1

0.05

0.15

Remainder

6061

0.40～0.8

0.7

0.15～0.40

0.15

0.8～1.2

0.04～0.35

0.25

0.15

0.05

0.15

Remainder

6005

0.6～0.9

0.35

0.1

0.1

0.40～0.6

0.1

0.1

0.1

0.05

0.15

Remainder

6005A

0.50～0.9

0.35

0.3

0.5

0.40～0.7

0.3

0.2

0.1

0.05

0.15

Remainder

6351

0.7～1.3

0.5

0.1

0.40～0.8

0.40～0.8

—

0.2

0.2

0.05

0.15

Remainder