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Location:Home-Advanced-Standard

Material for processing
Mark / status　6063　T5
Standard No.　GB/T5237. 1-2000
External quality(EQ)

The surface must be clean and tidy.No flaws like crack, peeling, corrosion or bubble are accepted.

No slight indentation, damage or scratch is allowed to be on the surface. The acceptable depth on the decorative side must be less than 0.003mm and the other sides less than 0.07mm. The trace left by the mold cannot be larger than 0.03mm.

Partial distortion caused by saw cutting at both ends is acceptable but the longitudinal length must be shorter than 20mm.

Offset  allowed
precision
Plane gapcurvatureTwistingangellength
≤0.15mm at a 25mm in width≤0.3mm at a 300mm in length≤0.017mm for each meter in length±1°When nominal L ≤6, plus 15mm
Mechanical property
Webser hardnessTensile strengthYield strengthelongation
≥8≥160N/mm≥110N/mm8%
Chemical component
SiMgFeCuMnZnCrTi
0.2-0.60.45-0.9≤0.35≤0.1≤0.1≤0.1≤0.1≤0.1


Anodic oxidation, colored profiles
Mark and status　6063　T5
Standard No.　GB/T5237. 2-2000
Quality of pre-process material　GB/T5237. 1-2000 specifications should be satisfied.
offset allowedGB/T5237. 1-2000 specifications should be satisfied.
Mechanical propertyGB/T5237. 1-2000 specifications should be satisfied.
Chemical componentGB/T5237. 1-2000 specifications should be satisfied.
Oxide film quality
 average
                    Film thickness		min
                    Local thickness		CASS
                    testing		Drops of alkali
                    testing		Shakeout test
                    Wear rate
Hole sealingSurface quality
≤30mg/dm

No electric burns,  oxidized wax falling off and other defects on the surface that will affect the use are allowed.

Partially no wax and electric burn within 80mm to the end of the profiles are allowed.

Grade AA10≥10um≥8um≥Grade 9≥50S≥300g/um
Grade AA15≥15um≥12um≥Grade 9≥70S≥300g/um


Electrophoresis coating profiles
Mark and status　6063　T5
Standard No.　GB/T5237. 3-2000
Quality of pre-process materialComply with GB/T5237. 1-2000
Offset allowedComply with GB/T5237. 1-2000.
Mechanical propertyGB/T5237. 1-2000 specification has to be satisfied when the film is removed.
Chemical componentGB/T5237. 1-2000 specification has to be satisfied when the film is removed.
Complex film quality
gradeAnode oxide filmPaint filmComplex filmPaint film
Hole sealingSurface quality

The surface quality of the profiles must meet GB/T5237.2 specification before painting.

The finished film must be viewed well-distributed and tidy. And wrinkles, cracks, bubbles, rill marks, impurities, tacky, film shedding and other defects that may affect the use are not permitted.But being partially lack of Zhen film within 80mm area to the end of the electrophoresis profiles is OK.

Average film thicknessLocal film thicknessLocal film thicknessLocal film thicknessAdhesive forcehardness
A≥10um≥8um≥12um≥21umGrade 0≥2H
B≥15um≥12um≥Grade 9≥70SGrade 0≥2H


Powder coating profiles
Mark and status　6063　T5
Standard No.　GB/T5237. 4-2000
Quality of pre-process materialsGB/T5237. 1-2000 specification should be satisfied.
Offset allowedGB/T5237. 1-2000 specification has to be satisfied after the coating removal.
Mechanical propertyGB/T5237. 1-2000 specification has to be satisfied after the coating removal.
Chemical componentGB/T5237. 1-2000 specification has to be satisfied after the coating removal.
Property of coating
Coating thicknesscolor
                    chromatic aberration		Indentation hardnessAdhesive forceShock resistanceCupping testSurface quality
Average thicknessmax
                    Local thickness		min
                    Local thickness
≥60≤120≥40The coating color should go closely together with the color chart regulated in the contract.≥80Grade 0After the shock resistance test, cracking and shedding on the right side shall not be seen, while tiny wrinkles around the concave are acceptableNo cracking and shedding appear on the coating surface since the cupping test is conducted with 6mm indentation concentrationThe coating on the decorative surface of the powder spraying profiles must be smooth and well distributed. There shall not be any wrinkle, rill mark, bubble, cracking or clamminess, flaws that will affect the use of them. Tiny orange-skin-alike defect is acceptable while the degree of acceptance must follow the description on the sample agreed by both the supplier and the purchaser.