ASTM A792/792m 55% Aluminum-Zinc Alloy Coated Galvalume Steel Coil with Anti-Finger Print

• Standard: ASTM, JIS, GB, DIN
• Certification: ISO
• Surface Treatment: Galvanized
• Technique: Hot Rolled
• Application: Flange Plate
• Edge: Mill
• Model NO.: DX51D DX53D
• Stock: Not Stock
• Name: Galvalume Steel Coil
• Grade: 230
• Sample: Available
• Yield Strength: 230
• Tensile Strength: 310
• Width: 600-1250mm
• Thickness: 0.15-3.0mm
• Payment: 30%Deposit, 70% See Copy of B/L
• Delivery: 15-40days
• Coil Weight: 3-8tons
• Transport Package: Strandard Export Packing
• Specification: JIS G 3321-2e
• Trademark: Dinggang or as customer′s request
• Origin: China
• HS Code: 72106100
• Production Capacity: 3, 000, 000 Tons Per Year

Product Description

Feature of the aluzinc steel:

1. Standard of Aluzinc Steel: ASTM A 792
2. Surface treatment of Aluzinc Steel: Chromated. Oiled, bright finish, fingerprint resistance
3. Thickness of Aluzinc Steel: 0.2mm-1.2mm
4. Width of Aluzinc Steel Coil: 600mm-1 250mm, our normal width: 1000 mm, 1200mm, 1250 mm
5. Coating weight of Aluzinc Steel: AZ50, AZ100, AZ150
6. Coil weight: As per customers' requests, 3-5 tons per coil generally
7. ID: 508mm.
8. Standard export packing
9. Applications: General use, construction industry, household appliance industry, automobile industry and industrial instruments
Package: Fancy package or as per customers' requests
10. Original: China

Aluminium-zinc alloy armor plate, is called Al-Zn coated plate for short Strips, after through three processes, including payoff reel, crop shear and welding, enter into the continuous annealing furnace. During the annealing process, strips are heated closer to the recrystallizing temperature, and then heated to 20~50º C above the recrystallizing temperature in the reducing furnace. After keeping the same temperature for 170s, strips are naturally cooled to the normal temperature in the slow cooling process. Afterward, strips enter into the zinc pot through the elephant's trunk and begin in the hot-dip coating process. The optimum temperature range of the plating coat is 630º C~660º C. Coated with aluminium-zinc alloy, strips enter into the cooling tower by the steady roll and air knife. After fast cooled with wind or water, they are directly produced into Al-Zn armor plates. The general rate of cooling is 30º C/s or so, and strips are cooled to about 60º C.

Chemical Requiremetns for structure steel
Composition, %-Heat Analysis Element, maximum, unless otherwise Shown
Designation	C	Mn	P	S	Cu	Ni	Cr	Mo	V	Cb	TiA	NB
G230	0.20	1.35	0.04	0.04	0.25	0.20	0.15	0.06	0.008	0.008	0.025	^
G255	0.20	1.35	0.10	0.04	0.25	0.20	0.15	0.06	0.008	0.008	0.025	^
G275	0.25	1.35	0.10	0.04	0.25	0.20	0.15	0.06	0.008	0.008	0.025	^
G340	0.25	1.35	0.20	0.04	0.25	0.20	0.15	0.06	0.008	0.008	0.025	^
G550	0.20	1.35	0.04	0.04	0.25	0.20	0.15	0.06	0.008	0.015	0.025	^