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Raw material national standard
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
Level clearance Degree of curvature Torsion Angle Length
On a random 25mm width≤0.15mm On a random 300mm length≤0.3mm On the length of each meter≤1.20mm ±1.0° Nominal length≤6m±15mm
Mechanical Properties
Webster hardness(HW) Tensile strength Yield strength Elongation percentage
≥8 ≥160N/mm2 ≥110N/mm2 8%
Chemical Compositions
Si Fe Cu Mn Mg Zn Impurity
Single Total
0.2-0.6 ≤0.15 ≤0.20 ≤0.05 0.45-0.90 ≤0.05 ≤0.05 ≤0.15
Anodizing national standard
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
  Average film thickness Minimum local film thickness CASS test Alkaline dropping corrosion resistance test Abrasion coefficient of sand trial Sealed hole Appearance quality
AA10 grade ≥10μm ≥8μm ≥9 grade ≥50S ≥300g/μm ≤30mg/dm2 A surface is not allowed to have such defects as slight burns, coming off of oxide film, etc., which influence the use.
Within 80mm from an end of the sectional material, it is allowed to have no film locally and electric burns
AA15 grade ≥15μm ≥12μm ≥9 grade ≥75S ≥300g/μm
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