Aluminum Zinc Color Coated Steel Sheet from China

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Loading Port:
Shanghai
Payment Terms:
TT or LC
Min Order Qty:
5 m²
Supply Capability:
9000 m²/month

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Product Description:

No.

Parameter

Description

1.

Name

Aluminum-zinc-silicon coated sheet

2.

Substrate

Cold rolled steel coils

3.

Zinc-coating

40g - 200g/m2

4.

Painting thickness

Top side:17-25um Back side:5-8um

5.

Steel color

RAL color

6.

Steel thickness

0.12mm - 1.00mm

7.

Material

SGCC/SGCH/DX51D+Z

8.

Coil width

900mm-1250mm

9.

Coil weight

3-6 tons

10.

Coil ID

508mm-610mm

11.

Payment

T/T or L/C

12.

Package

seaworthy standard export package

13.

Shipment

shipped by 20 feet container, loading about 25 tons

 

Coating Characteristic table
ItemTest ItemStandardNational standardDF Test Result
1Color DifferenceECCA T3Δ E≤ 2.0Δ E≤ 1.5
2Gloss DifferenceECCA T2≤ 10≤ 5
3Coating ThicknessECCA T1Two layers Min 23um≥ 24um
Three layers Min 30um≥ 33um
4Pencil HardnessASTM D3363≥ HBHB
5T-bendASTM D4145≤ 2T≤ 2T
6AdhesionASTM D3359Grade 0Grade 0
7ImpactASTM D2794≥ 50 kg/cm≥ 50 kg/cm
8Boiling water ResistanceGB/T177482h No Change4h No Change
9Solvent ResistanceASTM D2248200 times paints remaining500 times no break
10Acidity ResistanceASTM D13085%HCL 24hrs no changeNo change
11Alkali ResistanceASTM D13085%NaOH 24hrs no change color Δ E≤ 2.0No change
12Nitric acid ResistanceAAMA620Δ E≤ 5.0Δ E≤ 5.0
13Oil ResistanceASTM D130820# oil 24hrs no changeNo change
14Salt Spray ResistanceASTM B1174000hrs≤ Grade 1No change
15Abrasion resistanceASTM D968≥ 5L/um≥ 5L/um
16Dirt ResistanceGB/T9780≤ 5%< 5%
17Color retainingGB/T162594000 hrsΔ E≤ 4.04000 hrsΔ E≤ 3.0
18Gloss weaken LevelGB/T162594000 hrs ≤ Grade 24000 hrs ≤ Grade 2

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Q:why can aluminum sheet after oxide film removal react quicker with hydrochloric acid?
the reason is very simple, the original aluminum sheet has a layer of dense oxide film AI2O3, which has prevented the inner aluminum sheet from reacting with hydrochloric acid. but after oxide film removal, aluminum sheet will directly contact hydrochloric acid, generating H2.
Q:which kind of aluminum sheet could be bended after being etched?
general etching materials include stainless steel and copper.
Q:Could copper wire be welded with aluminum sheet?
Copper wire could be welded with aluminum sheet, and it needs to use low temperature welding method, if copper wire is in the unit of millimeter and aluminum sheet is also in the unit below 1 mm, you can use electric soldering iron to heat it as hybrid welding and choose low temperature welding materials, you can use WEWELDING M51 welding wire and M51-F flux to complete welding. As for the large aluminum sheet, you can take liquefied gas multihole lance as heat source, then choose the same low temperature materials as welding materials, you can use WEWELDING M51 welding wire and M51-F flux to complete welding. Welding fundamentals of these two welding methods: both of them are use heatable heat source to heat the matrix to 179 degree, the melting point of WEWELDING M51, then use matrix’s heat conduction to melt welding wire, completing welding. The process of melting welding wire is the process of smearing the welding wire with flux into welding area, melting welding wire completely depends on matrix’s heat conduction.
Q:When water continually sprays on the aluminum sheet, how to avoid corrosion of aluminum sheet and keep its water resistance?
aluminum will react with oxygen, generating dense Al2O3 oxide film on the surface, once the pure aluminum is exposed in air, it will react with air, generating oxide film to protect it.
Q:is aluminum foil spacer poisonous after heating?
many baked food will use aluminum foil.
Q:will it influence powder injection effect after wiping the oil contamination on the surface of aluminum sheet?
the surface should be kept clean to avoid the influence of oil contamination.
Q:what's the difference between zinc sheet and aluminum sheet?
Only the zinc sheet reacts after adding concentrated nitric acid in drops ,zinc is amphoteric.
Q:why intact aluminum sheet stop quicker than pectinate one in the magnetic field?
while swinging in the magnetic field, intact aluminum sheets will formulate inner eddy current,that is the annular induced current.eddy current will transform the mechanical energy into heat energy, which makes the aluminum sheet stop quickly.but pectinate aluminum sheet can't formulate intact eddy current, so intact aluminum sheet stop quicker than pectinate one.
Q:how to process 0.3mm hole on aluminum material?
It's bored by drill.
Q:is general aluminum sheet fire-proof?
aluminum is a kind of silver white metal,melting point:660.4℃, boiling point: 2467℃,density: 2.70 g/cm³,very light, about 1/4 of iron's density.it has low hardness and good ductility, which makes it suitable for being pulled into threadlets or pressed into aluminum foils, and the later is usually used for packaging candy and cigarette. it has good electrical and temperature conductivity. it's used for the manufacture of electric wire and cable in electric power industry, and for the manufacture of cooker in daily life.combined with the magnesium,copper,zinc,tin,manganese,chromium,zirconium,silicon and other elments,it can formulate various alloys that is broadly used for the manufacture of airplane,car,ship, materials of daily living equipment and the doors and windows of construction industry.aluminum is one of the best reflectors of heat and light, so it is used as thermal insulation material and the manufacture of reflecting mirror in the reflecting telescope.now, what do you think about it? the answer is certainly nonfireproof.

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