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General Chemical Composition of Alloy

Alloy 6063 (%) 6063A (%) 6061 (%)
Silicon 0.20~0.60 0.30~0.60 0.40~0.80
Iron 0.35 0.15~0.35 0.70
Copper 0.10 0.10 0.15~0.40
Manganese 0.10 0.15 0.15
Magnesium 0.45~0.90 0.60~0.90 0.80~1.20
Chromium 0.10 0.05 0.04~0.35
Zinc 0.10 0.15 0.25
Titanium 0.10 0.10 0.15
Others(each) 0.05 0.05 0.05
Others(total) 0.15 0.15 0.15
Aluminum Remainder Remainder Remainder

Mechanical Properties of Sections under Room Temperature

Alloy State Tensile strength test Hardness test
Tensile strength Non-proportional Stretching Stress Stretching rate Real thickness HV HW
δbMps δp0.2Mps δ% mm HV HW
No less than
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
190 150 5
T6 230 190 5
220 180 4

Surface Treatment

Class Min. average film thickness Min. local film thickness
AA10 10 8
AA15 15 12
AA20 20 16
AA25 25 20

The anodized goods are generally supplied in grade AA10 or are customized.

Electrophoresis Surface Treatment

Class Anodic oxide film Edit paint film Composite film
Average film thickness μm Local film thickness μm Local film thickness μm Local film thickness μm
A ≥10 ≥8 ≥12 ≥21
B ≥10 ≥8 ≥7 ≥16
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