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EN10215-1995(Q/BOB425-2004) Competitive price Prepainted galvalume coil  for roofing sheet

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EN10215-1995(Q/BOB425-2004) Competitive price Prepainted galvalume coil for roofing sheet

  • FOB Price: 600-1000 USD / ton
  • MOQ: 1 ton
  • Supply Capability: 5000 ton / month
  • Port: Tianjin/Qingdao/Shanghai Port
  • Delivery: 15-30days
  • Packaging: Bundles/Lifting belts/Plastic caps/Waterproof cloth/Customers requirment

Details


General Description

55% Al Zinc (Galvalume)steel coil is is a hot dipped zinc /aluminium alloy coated steel with cold rolled steel coil of various strengths and thicknesses as base material and with regular spangle surface. It made by 55% Al, 43.4% Zinc and 1.6% Si at the high temperature of 600℃, and its entire structure of aluminium-ferrum-silicon-zinc , which forms a alloy of compact four element crystal. have the excellent performance of corrosion resisting and heat reflection and economy.

 Applications 

*Construction

Roofing, Doors&Windows,Roller Shutter Door, Framework ect.

*Home Appliance

Refrigerator Pedestal, Refrigerated storage, Kitchen Equipment ect

*Automotive& Boats Industry

Body Shell, Pedestal, Oil tank ect

*Base Material of Colored Coated Coil


Comparison of Galvanized and Galvalume

1.Corrosion Resistance

 Atmospheric exposure test results throughout world, proved that under the condition of same coating thickness, the corrosion resistance of 55% AL Zinc steel coil is higher 3-6 times than galvanized steel coil.

 2.Resistance to high temperatures.

Comparison of 55%Al Zinc steel coil and galvanized steel coil,

55% Al Zinc steel coil have excellent high temperature oxidation and heat reflection. And have certain heat resistance. Normally, the appearance does not change significantly at 300 degrees temperatures.

Maximum use temperature(Appearance Nondiscoloration ):

1) Galvanized steel coil: 230℃.  

2) 55% Al Zinc steel coil: 316℃.

3. Heat reflection

The heat reflection of 55% Al  Zinc steel coil is better than galvanized steel coil. Which can reflect 80% of heat energy in sunlight. For cladding and roofing . can achieve energy saving effect.  

4. Formability

55% Al Zinc alloy coating has a higher hardness than zinc coating, but it have strong adhesion to base material. So as long as it is operated according to the regulations. It can obtain the same formability as galvanized steel coil.

5. Paintability

55% Al Zinc steel coil is most suitable for coating applications. It is unique coating organization can provide excellent coating adhesion and good ductility. Provide the most outstanding performance.


Classification

Specification

JISG3321 (cold rolled)

ASTM A792(M)

EN10215

Commercial Quality

SGLCC

CS Type A B C

DX51D

Forming Quality

---

FS

DX52D

Drawing Quality

---

DS

DX53D

 

 

Structural Quality

---

Grade 33 (Gr.230)

--

SGLC400

Grade 37(Gr.255)

S250GD

SGLC440

Grade 40 (Gr.275)

S280GD

---

---

S320GD

SGLC490

Grade 50 (Gr.340)

S350GD

SGLC570

Grade 80 (Gr.550)

S550GD



Chemical Composition (Heat Analysis Element---%Max)

Standard

Element  Material

Steel         Grade

Carbon

Silicon

Manganese

Phosphorus

Sulphur

Ti

Aluminium

 

 

 

 

EN10215

 

 

 

 

DX51D

0.18

0.50

1.2

0.12

0.045

0.30

--

DX52D

0.12

0.50

1.2

0.10

0.045

0.30

--

DX53D

0.12

0.50

0.6

0.10

0.045

0.30

--

S250GD

0.25

0.60

1.70

0.10

0.045

--

--

S280GD

0.25

0.60

1.70

0.10

0.045

--

--

S320GD

0.25

0.60

1.70

0.10

0.045

--

--

S350GD

0.25

0.60

1.70

0.10

0.045

--

--

S550GD

0.25

0.60

1.70

0.10

0.045

--

--

Mechanical Properties

(Mechanical properties are guaranteed at ambient or room temperatures.)

Standard

 Steel Grade

Yield  Strength

Tensile  Strength

 

Elongation %

Min N/mm2(Mpa)

Min N/mm2(Mpa)

 

 

 

EN10215

DX51D

--

270-500

≥22

DX52D

140-300

270-420

≥26

DX53D

140-260

270-380

≥30

S250GD

250

330

≥19

S280GD

280

360

≥18

S320GD

320

390

≥17

S350GD

350

420

≥16

S550GD

550

550

---

Dimension Capability

Remark: All thickness are based material thickness(BMT).

Standard

Steel Grade

Thickness Range (mm)

Width Range(mm)

Remark

JIS3321      (cold rolled)

 

 

All Steel Grade

 

 

0.23--2.3

 

 

610--1250

 

Coil ID:508/610mm;  Coil Weight:3-7tons

ASTM A792(M)

EN10125

 

Standard

Coating Designation

Min Average Coating Mass In Triple-Spot Test

Minimum Coating Mass At a Single Spot

EN10215

AZ100

100

85

AZ150

150

130

AZ185

185

160

Remark: The coating mass is not always equally distributed on both the product surfaces. However, it maybe assumed  that coating mass of at least 40% the value given in above table for the single spot test exists on each surface of product. 

Bend test

Bend test to determining the adhesion of coating

Angle of bend: 180 degree.

Coating Design

Mandrel diameter D for coating designation   t=product thickness

AZ100

AZ150

AZ185

DX51D

0t

0t

1t

DX52D

0t

0t

0t

DX53D

0t

0t

0t

S250GD

1t

1t

1t

S280GD

2t

2t

2t

S320GD

3t

3t

3t

S350GD

3t

3t

3t

S550GD

--

--

--

Available Finishes

Available Finishes

Surface condition

 Finely Spangle   Skin Passing

Surface treatment (Protection)

Chemical Passivation  Oiled(optional)  Untreated  Resin Coated

Remark:

1. imperfections such as small pits, variations in spangle size, dark spots, stripe marks , light passivation

stains ,stretch leveling breaks,skin pass marks,scratches, zinc run off marks are permissible on surface.

2.chemical passivation protects the surface against humidity and reduces the risk of formation of “white rust” during transportation and storage, local discolouring as a result of this treatment is permissible and does not impair the quality.

3.  Oiling also reduces the risk of corrosion of the surface.

4. Resin Coated offers additional corrosion protection by transparent organic film. Specially protection against anti-fingerprint

 

Package

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Storage Transportation and Loading /unloading

Storage:

1) keep the product dry.

2) Store the product in a dry and well ventilated area preferably indoors. to avoid condensation and moisture penetration. Store the productions in a roofed storage area.

3) Don’t put the products where they could be exposed to sand and dust. If sand or dust build up on a sheet.they can damage zinc or paint coatings, sand and dust also hinder drying and thus promote white rust formation.

4) Don’s stack sheets or coils excessively high. This is important for safety as well as for the prevention of sheet deformation or other damage. Inventory terms should be as short as possible(Within 6 month)

Transport and Loading/unloading:

1) Don’t push the cut sheets or roll the coil with a forklift. Since this could cause scratching.

2) When transporting coil in a truck, care should be taken to protect the coil surfaces against damage. Using preferably. A rubber sheet beneath the coil or an exclusive transport stand.

3) When transporting coils. Firmly fix the stacked sheets so that they do not slip off due to vibration.