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  AI-Zn Alloy-Coated Steel Coils

55 AI-Zn ALLOY-COATED STEEL COILS
 
The aluminum-zinc alloy for 55 Al-Zn alloy-coated steel coils consists of 55 aluminum, 43.4 zinc and 1.6 silicon, solidified at 600oC high temperature. The whole structure is a quaternary AI-Fe-Si-Zn compound which becomes a protection layer on the steel sheet to prevent penetration of corrosive factors effectively.
 
 
 
GALVANIZED STEEL COILS
 
The zinc layer on the surface of the galvanized steel sheet isolates the steel sheet from atmosphere to prevent further corrosion of the base sheet and ensures a long service life of the base sheet, due to the excellent corrosion resistance of the galvanized steel sheets. Besides, our galvanized steel sheets are economic and functionally diverse, meeting the requirements of different environments and applications and provide high added value for various combination of products. Now, the galvanized steel sheets are in common use in many fields such as precision instruments, computers, electronic appliances, architectures, color coating, etc.
 
 
 


CHARACTERISTICS
 

CORROSION RESISTANCE
 
The improved corrosion resistance of 55 AI-Zn alloy-coated steel coils is derived from the unique combination of the barrier protection of the aluminum and the sacrificial protection of the zinc. The formation of an insoluble aluminum oxide layer provides the barrier protection while the zinc provides a sacrificial protection at cut edges, scratches and areas of coating damage.
Outdoor exposure testing of 55 AI-Zn alloy-coated steel onus has been conducted for over 20 years in various atmospheric environments. This testing also demonstrated a superior cut edge protection of 55 AI-Zn alloy-coated steel sheet than the galvanized steel sheet.
 
 
 
 



HEAT RESISTANCE
 
Similar to the aluminum coated steel sheet that can resist high temperature oxidation, 55 AI-Zn alloy-coated steel sheet demonstrates better resistance to high temperature than the galvanized steel sheet. SYSCO′s 55 AI-Zn alloy-coated steel sheet can be used in temperatures up to 315oC.
 
 

 
 
HEAT TRANSMISSION AND REFLECTIVITY
 
55 AI-Zn alloy-coated steel coil has a high reflectivity value making it an effective barrier against heat.
 
 


APPLICATIONS
 
 
 

BUILDING & CONSTRUCTION
 
Floor decks, ceilings, verandas, rolling doors, warehouse, partitions, sheds, gutters, wall, underground piping, sashes, beams, fences, scaffolding, indoor decorations, ducts, ventilating pipes, steel frames and cable trays.
 
 
 

ELECTRICAL APPLIANCES
 
Freezers, video recorder cases, motor cases, lighting fittings, water heaters, washing machines, refrigerators, stoves, air conditioners, dehumidifiers, fluorescent light housings, electrical heaters, toasters, microwave oven enclosures and switch boxes.
 
 
 

TRANSPORTATION
 
Containers, under body panels, bus & truck body panels, fuel tanks, noise screens, highway signs, air cleaners, conveyor systems and guard rails.
 
 
 

AGRICULTURAL EQUIPMENT
 
Barns, drying machines, animal houses, hoppers, irrigation systems, greenhouses, water tanks, sheds, silos, agricultural implements and feeders.
 
 
 

FURNITURE & OTHERS
 
Vending machines, drums, cans, pails, sauna inner parts, chimney pipes, entertainment machines, solar collectors, office equipment, steel furniture, tool boxes, garages and waste bins.
 
 
 

COMPUTER锛嘢 APPLIANCES
 
Computer shells and communication instruments.
 
 
 


SPECIFICATION
 

55 AI-Zn ALLOY-COATED STEEL COILS
 

A.Size Available
JIS
Product Name
Hot-Dip Galvanized Coils
Standard
Size Available
JIS / SYSCO
Skinpass
Without Skinpass
Specification
Order Width (mm)
Base Material Gauge (mm)
Order Width (mm)
Base Material Gauge (mm)
SGCC
900锝940
940锝1040
1040锝1100
1100锝1220
1220锝1230
1230锝1250
0.20锝1.60
0.23锝1.60
0.24锝1.60
0.25锝1.60
0.26锝1.60
0.35锝1.60
900锝940
940锝1040
1040锝1100
1100锝1220
1220锝1230
1230锝1250
1250锝1260
1260锝1270
0.20锝1.60
0.23锝1.60
0.24锝1.60
0.25锝1.60
0.26锝1.60
0.35锝1.60
0.35锝1.22
0.58锝1.22
SGC 340
900锝1050
1050锝1220
1220锝1250
1250锝1260
0.20锝1.60
0.28锝1.60
0.40锝1.60
0.80锝1.60
900锝1050
1050锝1220
1220锝1250
1250锝1260
0.20锝1.60
0.28锝1.60
0.40锝1.60
0.80锝1.60
SGC 400
900锝960
960锝1110
1110锝1220
1220锝1240
1240锝1260
0.28锝1.60
0.35锝1.60
0.38锝1.60
0.40锝1.60
0.60锝1.60
900锝1100
1100锝1240
1240锝1260
1260锝1270
0.35锝1.60
0.40锝1.60
0.60锝1.60
0.70锝1.20
SGC 440
SGC 490
900锝920
920锝1230
1230锝1250
0.28锝1.60
0.35锝1.60
0.40锝1.60
900锝920
920锝1230
1230锝1250
0.28锝1.60
0.35锝1.60
0.40锝1.60
SGC 570
SGCH
900锝920
920锝940
940锝1230
1230锝1250
0.21锝1.60
0.25锝1.60
0.28锝1.60
0.47锝1.40
900锝920
920锝940
940锝1230
1230锝1250
0.21锝1.60
0.25锝1.60
0.28锝1.60
0.47锝1.40
SGCD1
900锝1250
0.30锝1.60
900锝1250
0.30锝1.60
Coating Mass and Applicative Range of Gauge of Cold-Rolled Coils.
Z08 , Z10锛0.30 锝 1.60 mm
Z12 , Z18 , Z20 , Z22 , Z25 , Z27锛0.20 锝 1.60 mm
Z35 , Z450锛.40 锝 1.60 mm8
 
Product Name
Hot-Dip 55 AI-Zn Alloy-Coated Steel Coils
Standard
Size Available
SYSCO
Skinpass
Without Skinpass
Specification
Order Width (mm)
Base Material Gauge (mm)
Order Width (mm)
Base Material Gauge (mm)
SGLC
900锝920
920锝1000
1000锝1200
1200锝1220
1220锝1250
0.20锝1.20
0.22锝1.20
0.23锝1.20
0.25锝1.20
0.30锝0.80
900锝920
920锝1010
1010锝1200
1200锝1220
1220锝1250
0.20锝1.20
0.22锝1.20
0.23锝1.20
0.25锝1.20
0.30锝1.20
SGL 340
900锝1110
1110锝1220
0.30锝1.20
0.37锝1.20
900锝920
920锝1250
0.27锝1.20
0.30锝1.20
SGL 400
900锝920
920锝1220
0.32锝1.20
0.35锝1.20
900锝1250
0.35锝1.20
SGL 440
SGL 490
900锝1050
1050锝1220
0.33锝1.20
0.40锝1.20
900锝1050
1050锝1250
0.33锝1.20
0.40锝1.20
SGL 570
900锝914
914锝1050
1050锝1220
0.21锝1.00
0.23锝1.00
0.30锝1.00
900锝914
914锝1050
1050锝1220
0.21锝1.00
0.23锝1.00
0.30锝1.00
SGLD1
900锝1250
0.30锝1.20
900锝1250
0.30锝1.20
Coating Mass and Applicative Range of Gauge of Cold-Rolled Coils.
AZ050, AZ070, AZ090, AZ100, AZ120, AZ150, AZ165锛0.20~1.20mm
AZ180锛0.20 锝 0.96 mm
AZ200锛0.30 锝 0.80 mm


ASTM
Product Name
Hot-Dip Galvanized Coils
Standard
Size Available
ASTM (2001 Ed.)
Skinpas
Without Skinpass
Specification (Metric)
Specification (Imperial)
Order Width(mm)
Base Material Gauge (mm)
Order Width(mm)
Base Material Gauge (mm)
A653M CS
A653M FS
A653 CS
A653 FS
900锝940
940锝1040
1040锝1100
1100锝1220
1220锝1230
1230锝1250
0.20锝1.60
0.23锝1.60
0.24锝1.60
0.25锝1.60
0.26锝1.60
0.35锝1.60
900锝940
940锝1040
1040锝1100
1100锝1220
1220锝1230
1230锝1250
1250锝1260
1260锝1270
0.20锝1.60
0.23锝1.60
0.24锝1.60
0.25锝1.60
0.26锝1.60
0.35锝1.60
0.35锝1.22
0.58锝1.22
A653M SS Grade230
A653 SS specGrade33
900锝940
940锝1040
1040锝1100
1100锝1220
1220锝1230
1230锝1250
0.20锝1.60
0.23锝1.60
0.24锝1.60
0.25锝1.60
0.26锝1.60
0.35锝1.60
900锝940
940锝1040
1040锝1100
1100锝1220
1220锝1230
1230锝1250
1250锝1260
1260锝1270
0.20锝1.60
0.23锝1.60
0.24锝1.60
0.25锝1.60
0.26锝1.60
0.35锝1.60
0.35锝1.22
0.58锝1.22
A653M SS Grade255
A653 SS
Grade37
00锝1050
1050锝1220
1220锝1250
1250锝1260
0.20锝1.60
0.28锝1.60
0.40锝1.60
0.80锝1.60
900锝1050
1050锝1220
1220锝1250
1250锝1260
0.20锝1.60
0.28锝1.60
0.40锝1.60
0.80锝1.60
653M SS Grade275
A653 SS Grade40
900锝960
960锝1110
1110锝1220
1220锝1240
1240锝1260
0.28锝1.60
0.35锝1.60
0.38锝1.60
0.40锝1.60
0.60锝1.60
900锝1100
1100锝1240
1240锝1260
1260锝1270
0.35锝1.60
0.40锝1.60
0.60锝1.55
0.70锝1.20
A653M SS Grade340
A653 SS Grade50
900锝920
920锝1230
1230锝1250
0.28锝1.60
0.35锝1.60
0.40锝1.60
900锝920
920锝1230
1230锝1250
0.28锝1.60
0.35锝1.60
0.40锝1.60
A653M SS Grade550
A653 SS Grade80
900锝920
920锝940
940锝1230
1230锝1250
0.21锝1.60
0.25锝1.60
0.28锝1.60
0.47锝1.40
900锝920
920锝940
940锝1230
1230锝1250
0.21锝1.20
0.25锝1.60
0.28锝1.60
0.47锝1.40
A653M DDS
A653 DDS
900锝1250
0.30锝1.60
900锝1250
0.30锝1.60
 
Coating Mass and Applicative Range of Gauge of Cold-Rolled Coils.

 
Metric:
Z080锛0.30 锝 1.60 mm
Z120 , Z180 , Z275锛0.20 锝 1.60 mm
Z350锛0.40 锝 1.60 mm
Imperial:
G40 , G60 , G90锛0.20 锝 1.60 mm
G115锛0.40 锝 1.60 mm
B.Range of Weight: 40g/m2 ~ 200g/m2
C.Surface: Regular spangle, Extra smooth
D.Grade Available: commercial, lock forming, drawing and structural grades
 
 
Classified symbol
cold-rolled base metal
Yield Point Minimum N/mm2
Tensile Strength Minimum
N/mm2
Elongation Minimum
Application
Nominal Thickness mm (t)
JIS G3321-1998
SYSCO specification
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
SGLCC
SGLC
(205)
(270)
(20)
(21)
(24)
(24)
(25)
Commercial
SGLCD
SGLD1
---
270
---
27
31
32
33
Drawing
---
SGL340
245
340
20
20
20
20
20
Structural
SGLC400
SGL400
295
400
16
17
18
18
18
Structural
SGLC440
SGL440
335
440
14
15
16
18
18
Structural
SGLC490
SGL490
365
490
12
13
14
16
16
Structural
SGLC570
SGL570
560
570
---
---
---
---
---
Structural
ASTM Designation
1999
Yield Point Minimum
Tensile Strength Minimum
Elongation Minimum
Application
ksi(MPa)
ksi(MPa)
A792(M)-99 CS TYPE A,B,C
---
---
---
Commercial
A792(M)-99 FS
---
---
---
Lock Forming
A792(M)-99 DS
---
---
---
Drawing
A792(M)-99 SS Grade33(230)
33(230)
45(310)
20
Structural
A792(M)-99 SS Grade37(255)
37(255)
52(360)
18
Structural
A792(M)-99 SS Grade40(275)
40(275)
55(380)
16
Structural
A792(M)-99 SS Grade50(345)
50(345)
65(450)
12
Structural
A792(M)-99 SS Grade80(550)
80(550)
82(570)
---
Structural
 
 
 
Remark:
JIS/SYSCO: ( )The values in parentheses in the table are only for informative reference.
 
ASTM:A792(M) is metric, represented by the number within ().
 
 


GALVANIZED STEEL COILS
 

A.Surface Treatment: Regular Spangle, Mini Spangle, Extra Smooth
1.
REGULAR SPANGLE:
 
Regular spangle is also called normal spangle which is naturally formed without any additional treatment during galvanizing.
 
2.
MINI SPANGLE:
 
The spangle is restrained and formed as mini spangle by reducing the lead content in the zinc liquid or by blowing the zinc powder from the equipment installed on the zinc pot.
 
3.
EXTRA SMOOTH:
 
The mini spangle is further skin-passed to produce the extra smooth surface.
 
B.Grade Available: commercial, lock forming, drawing and structural grades
 
 
 
JIS G3302-1998 / SYSCO
Classified symbol
Yield Point Minimum N/mm2
Tensile Strength Minimum
N/mm2
Elongation Minimum
Application
Nominal Thickness mm (t)
cold-rolled base metal
hot-rolled base metal
0.25≤
t<0.4
0.4≤
t<0.6
0.6≤
t<1.0
1.0≤
t<1.6
1.6≤
t<2.5
t≥2.5
SGCC
SGHC
---
---
---
---
---
---
---
---
Commercial
SGCH
---
---
---
---
---
---
---
---
---
Commercial Hard
SGCD1
---
---
270
---
34
36
37
38
---
Drawing
SGC340
SGH340
245
340
20
20
20
20
20
20
Structural
SGC400
SGH400
295
400
18
18
18
18
18
18
Structural
SGC440
SGH440
335
440
18
18
18
18
18
18
Structural
SGC490
SGH490
365
490
16
16
16
16
16
16
Structural
---
SGH540
400
540
 
 
 
16
16
16
Structural
SGC570
 
560
570
---
---
---
---
---
---
Structural
ASTM Designation
1999
Yield Point Minimum
Tensile Strength Minimum
Elongation Minimum
Application
ksi(MPa)
ksi(MPa)
A653(M)-99 CS TYPE A,B,C
---
---
---
Commercial
A653(M)-99 FS TYPE A,B
---
---
---
Lock Forming
A653(M)-99 DDS
---
---
---
Drawing
A653(M)-99 SS Grade33(230)
33(230)
45(310)
20
Structural
A653(M)-99 SS Grade37(255)
37(255)
52(360)
18
Structural
A653(M)-99 SS Grade40(275)
40(275)
55(380)
16
Structural
A653(M)-99 SS Grade50(340)
50(340)
65(450)
12
Structural
A653(M)-99 SS Grade80(550)
80(550)
82(570)
---
Structural
 
 
 
Remark:1.ASTM:A653(M) is metric, represented by the number within .
             2.All products can be skin passed.
             3.Pllease inquire our marketing department for product special specifications
 
 


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