TECHNOLOGICAL PROCESS

Jihua aluminum products. Strictly organize and implement production in accordance with national standards or industry standards. Such as anodized aluminium profiles and standard aluminium profiles. Take the road of standardized production, and improve market competition

Technological Process

Product Quality Standard

Chemical Components of Aluminium Alloy Profile

Alloy grade Si Mg Fe Cu Mn Zn Cr Ti Other impurities Al
Single Total
6061 0.40-0.80 0.8-1.2 0.15-0.40 0.04-0.35 Allowance
6063 0.20-0.60 0.45-0.9 Allowance
6063A 0.30-0.60 0.6-0.9 0.15-0.35 Allowance

Mechanical Properties of Aluminium Alloy Profile at Room Temperature

Alloy grade Status Longitudinal tensile test results at room temperature Hardness
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)
6061 T4 ≥180 ≥110 ≥16 - - -
T6 ≥265 ≥245 ≥8 - - -
6063 T5 ≥160 ≥110 ≥8 ≥0.8 ≥58 ≥8
T6 ≥205 ≥180 ≥8 - - -
6063A T5 ≥200 ≥160 ≥5 ≥0.8 ≥65 ≥10
T6 ≥230 ≥190 ≥5  

Surface Film Standard for Anodized Aluminium Alloy Profile

Grade of film thickness Average film thickness(μm) Local film thickness(μm) Sealing quality(mg/dm2) Wear resistance coefficient(g/μm)
AA10 ≥10 ≥8 ≤30 Drop 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 thickness Local thickness of anodic oxide film(μm) Local thickness of coating film(μm) Local thickness of composite film(μm) Coating film hardness Wear resistance shakeout amount/g
A ≥9 ≥12 ≥21 Pencil test≥3H Drop sand test≥3300
B ≥9 ≥7 ≥16 Drop 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 layer Average film thickness(μm) Local film thickness(μm) Color Adhesion Hardness
Two coating ≥30 ≥25 Gloss:±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 value Adhesion Color Indentation hardness Wear resistance(L/μm)
≥40,Implement in accordance with international standards and produce according to the contract 3~30±5 Dry type, wet type, boiling water
The adhesion shall reach Grade 0
Basically consistent with the
confirmed sample of both parties
Indentation resistance≥80 Drop 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 items Connecting mode Longitudinal shear characteristic value(N/mm) Transverse tensile characteristic value(N/mm) Average value of deformation
of insulation material(mm)
Room temperature Low temperature High temperature Room temperature Low temperature High 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

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