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Product quality standard

  • Chemical components of aluminium alloy profile:
    Alloy gradeSiMgFeCuMnZnCrTiOther impuritiesAl
    SingleTotal
    60610.40-0.800.8-1.20.15-0.400.04-0.35Allowance
    60630.20-0.600.45-0.9Allowance
    6063A0.30-0.600.6-0.90.15-0.35Allowance
  • Mechanical properties of aluminium alloy profile at room temperature:
    Alloy gradeStatusLongitudinal tensile test results at room temperatureHardness
    Tensile strength(N/mm2)Specified non-proportional extension strength(N/mm2)Elongation after break(%)Thickness of test sample(mm)Vickers hardness(HV)Webster hardness(HW)
    6061T4≥180≥110≥16---
    T6≥265≥245≥8---
    6063T5≥160≥110≥8≥0.8≥58≥8
    T6≥205≥180≥8---
    6063AT5≥200≥160≥5≥0.8≥65≥10
    T6≥230≥190≥5 
  • Surface film standard for anodized aluminium alloy profile:
    Grade of film thicknessAverage film thickness(μm)Local film thickness(μm)Sealing quality(mg/dm2)Wear resistance coefficient(g/μm)
    AA10≥10≥8≤30Drop sand test≥300
    AA15≥15≥12
    AA20≥20≥16
    AA25≥25≥20
    Note: The film thickness grade shall be indicated in the purchase order (or contract) and is generally supplied according to AA10 (door and window) or AA15 (curtain wall).
  • Surface film standard for electrophoretic coating aluminium alloy profile:
    Grade of film thicknessLocal thickness of anodic oxide film(μm)Local thickness of coating film(μm)Local thickness of composite film(μm)Coating film hardnessWear resistance shakeout amount/g
    A≥9≥12≥21Pencil test≥3HDrop sand test≥3300
    B≥9≥7≥16Drop sand test≥3300
    Note: The film thickness grade shall be indicated in the purchase order (or contract) and is generally supplied according to grade B.
  • Surface film standard for fluorocarbon paint spraying aluminium alloy profile:
    Type of film layerAverage film thickness(μm)Local film thickness(μm)ColorAdhesionHardness
    Two coating≥30≥25Gloss:±5
    Color difference: basically consistent with the confirmed sample of both parties
    Dry type, wet type, boiling water
    The adhesive force shall reach grade 0
    Pencil test of coating≥1H
    three coating≥40≥34
    four coating≥65≥55
    Note: Due to the complexity of the cross-sectional shape of the profile, the local film thickness on certain surfaces of the profile (such as the inside corner, groove, etc.) is allowed to be lower than the specified value in the table, the base exposure is not allowed; for coating of non-decorative surfaces, if required, it shall be listed in the contract or order.
  • Surface film standard for power spraying aluminium alloy profile:
    Film thickness(μm)60°Gloss valueAdhesionColorIndentation hardnessWear resistance(L/μm)
    ≥40,Implement in accordance with international standards and produce according to the contract3~30±5Dry type, wet type, boiling water
    The adhesion shall reach Grade 0
    Basically consistent with the
    confirmed sample of both parties
    Indentation resistance≥80Drop sand test, wear coefficient≥0.8
    31~70±7
    71~100±10
    Note: Due to the complexity of the cross-sectional shape of the profile, the film thickness on certain surfaces of the profile (such as the inside corner, groove, etc.) is allowed to be lower than the specified value in the table. For coating of non-decorative surfaces, if required, it shall be listed in the contract or order.
  • Mechanical properties of aluminium alloy profile at room temperature:
    Test itemsConnecting modeLongitudinal shear characteristic value(N/mm)Transverse tensile characteristic value(N/mm)Average value of deformation
    of insulation material(mm)
    Room temperatureLow temperatureHigh temperatureRoom temperatureLow temperatureHigh temperature
    Longitudinal shear/
    transverse tensile properties
    Strip inserting type≥24≥24---
    Pouring type≥24≥24
    -
    60 times thermal cycle test
    at high temperature constant load
    Strip inserting type----≥24≤0.6
    Pouring type≥24-----≤0.6