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JISG3321-2018 Prime  Hot-Dipped Galvalume coil

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JISG3321-2018 Prime Hot-Dipped Galvalume coil

  • FOB Price: 400-1000 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 requirments

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 etc

*Base Material of Colored Coated Coil

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

Standard

Steel Grade

Carbon

Silicon

Manganese

Phosphorus

Sulphur

Aluminium

 

JISG3321 (cold rolled)

SGLCC

0.15

--

0.80

0.05

0.05

--

SGLC400

0.25

--

1.70

0.20

0.05

--

SGLC440

0.25

--

2.00

0.20

0.05

--

SGLC490

0.30

--

2.00

0.20

0.05

--

SGLC570

0.30

--

2.50

0.20

0.05

--



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

Standard

Steel 

Grade

Yield   Strength

Tensile   Strength

Elongation   %

Normal Thickness mm (t)

N/mm2(Mpa)

0.25t<0.4

0.4t<0.6

0.6t<1.0

1.0t<1.6

1.6t<2.3


JIS   G 3321

(Cold   Rolled)

SGLCC

205 min

270 min

20 min

21 min

24 min

24 min

25 min

SGLC400

295 min

400 min

16 min

17 min

18 min

18 min

18 min

SGLC440

335 min

440 min

14 min

15 min

16 min

18 min

18 min

SGLC490

365 min

490 min

12 min

13 min

14 min

16 min

16 min

SGC570

560 min

570 min

---

---

---

---

---



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.

6. Weldability

55% Al Zinc coating have 55% Al content. The welding conditions more strict than galvanized steel coil. 

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




Standard

Steel Grade

Yield   Strength

Tensile  Strength

Elongation %

Nominal Thickness mm (t)

N/mm2(Mpa)

N/mm2(Mpa)

0.25≤t<0.4

0.4≤t<0.6

0.6≤t<1.0

1.0≤t<1.6

1.6≤t<2.3


 

 

JISG3321     (cold rolled)

SGLCC

205 Min

270 Min

20 Min

21 Min

24 Min

24 Min

25 Min

SGLC400

295 Min

400 Min

16 Min

17 Min

18 Min

18 Min

18 Min

SGLC440

335 Min

440 Min

14 Min

15 Min

16 Min

18 Min

18 Min

SGLC490

365 Min

490 Min

12 Min

13 Min

14 Min

16 Min

16 Min

SGC570

560Min

570 Min

--

--

--

--

--


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) Dont 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) Dons 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) Dont 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.