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    Standard
    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 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
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