Raw material national standard

 

Trade Mark and State	6063 T5
Standard No.	GB5237.1-2008
Appearance Quality	The surface of the sectional material should be neat, and no presence of such defects of crackles, peeling, corrosion, bubbles, etc.. 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. 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 25m width≤0.15mm On a random 300m length≤0.3mm On the length of each meter≤1.2mm ±1° 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 ≤0.35 ≤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 dimensionss	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 ≥9grade ≥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 8 m from an end of the sectional material, it is allowed to have no film locally and electric burns AA15 grade ≥15μm ≥12μm ≥9grade ≥75S ≥300g/μm

Power coating national standard

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 dimensionss	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.

Chemical Composition of Alloy

Alloy	6063(%)	6063A(%)	6061(%)
Si	0.20-0.60	0.30-0.60	0.40-0.80
Fe	0.35	0.15-0.35	0.70
Cu	0.10	0.10	0.15-0.40
Mn	0.10	0.15	0.15
Mg	0.45-0.90	0.60-0.90	0.80-1.20
Cr	0.10	0.05	0.04-0.35
Zn	0.10	0.15	0.25
Ti	0.10	0.10	0.15
Others(each)	0.05	0.05	0.05
Others(total)	0.15	0.15	0.15
Al	Remainder	Remainder	Remainder