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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
    8%
    /
    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