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National Standard for Base Material (Embryo Material)

Grade, Status

6063 T5

Standard No.

GB5237.1-2008

Appearance quality

The surface of the profile should be neat and tidy, and defects such as cracks, peeling, corrosion and air bubbles are not allowed.

Slight crater, bump and scratch are allowed on the surface of the profile, which allows the depth decorative surface to be no more than 0.03mm, the non-decorative material surface to be no more than 0.07mm, and the mold extrusion mark depth to be no more than 0.03mm.

The profile ends allow local deformation due to sawing and its longitudinal length should not exceed 20mm.

Dimensional tolerance deviation high precision

Plane clearance

Curvature

Twist

Angle

Length

≤0.15mm at any width of 25mm

≤0.3mm at any length of 300mm

≤0.017mm at length of each meter

±1°

Nominal length ≤6m±15mm

Mechanical Properties

Webster hardness（HW）

Tensile Strength

Yield Strength

Elongation at Break

≥8

≥160N/mm2

≥110N/mm2

Chemical Composition

Si	Mg	Fe	Cu	Mn	Zn	Cr	Ti
0.2-0.6	0.45-0.9	≤0.35	≤0.1	≤0.1	≤0.1	≤0.1	≤0.1

National Standard for Anodic Oxidation and Coloring Profiles

Grade, Status	6063 T5
Standard No.	GB5237.2-2008
Quality of substrate	Should comply with the GB5237.1-2008
Dimensional tolerance	Should comply with the GB5237.1-2008
Mechanical Properties	Should comply with the GB5237.1-2008
Chemical Composition	Should comply with the GB5237.1-2008
Chemical Composition	Average Film Thickness		Minimum Local Film Thickness	CASS Test	Drop Alkali Test	Falling Sand Experiment Wear Coefficient	Sealing	Appearance quality
	Level AA10	≥10μm	≥8μm	≥Level 9	≥50S	≥300g/μm	≤30mg/dm2	The surface is not allowed to have burns, oxide film peeling and other defects affecting the use, and it is allowed to be partially free of film and electric burn within 80mm from the end of the profile.
	Level AA15	≥15μm	≥12μm	≥Level 9	≥75S	≥300g/μm	/

National Standard for Powder Spraying Profiles

Grade, Status

6063 T5

Standard No.

GB5237.2-2008

Quality of substrate

Should comply with the GB5237.1-2008

Dimensional tolerance

Should comply with the GB5237.1-2008

Mechanical Properties

After removing the coating, it should meet the GB5237.1-2008

Chemical Composition

After removing the coating, it should meet the GB5237.1-2008

Coating Performance

Coating Thickness(μm)

Color and Color Difference

Indentation Hardness (indentation resistance)

Adhesion

Average Thickness

Maximum Local Thickness

Minimum Local Thickness

The coating color should be consistent with the standard color specified in the contract.

≥80

Level 0

≥60

≥120

≥40

Chemical Composition

Impact Resistance	Cupping Experiment	Appearance quality
The front side of the coating should have no cracking and shedding after the impact test, but small wrinkle around the concave surface is allowed.	The coating should have no cracking and shedding after the cupping experiment with a depth of 6mm.	The coating on the decorative surface of the powder-coated profile should be smooth and uniform without defects such as wrinkles, flow marks, bubbling, crack, and stickiness which affect the use. Slight crease phenomenon is allowed, the extent of which will be indicated by the physical samples agreed upon by the supply and demand parties.

Chemical Composition of Alloys

Grade	Chemical Composition (mass fraction)(%)
	Si	Fe	Cu	Mn	Mg	Cr	Zn	Ti	Other		Al
	/	/	/	/	/	/	/	/	Single	Total	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	Margin
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	Margin
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	Margin
6005A	0.50～0.9	0.35	0.5	0.5	0.40～0.7	0.3	0.2	0.1	0.05	0.15	Margin
6351	0.7～1.3	0.5	0.1	0.40～0.8	0.40～0.8	0.1	0.2	0.2	0.05	0.15	Margin

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