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Aluminium-zinc coated steel sheet

SSSC’s aluminium-zinc coated steel sheet in coil (GL) is produced by the advanced NOF hot-dip continuous galvanizing line. The product has a very good corrosion resistance in the natural surroundings.

SSSC’s GL coil has the glossy surfaces, its machinability is suitable for applications of fabrication, forming, etc.

The SSSC’s GL is manufactured in compliance with the standards: JIS G3321, ASTM A792/A792M, SSSC’s standard: TCCS-03.

Specifications of product

Thickness (mm) 0.16 + 1.5
Width (mm) 1250Max. 1250
Unit coil weight (ton) Max. 25
Average coating mass on both sides at triple-spot 300
Coil inner diameter (mm) 508 or 610

Coating treatment

  • Regular spangle
  • Mini spangle

Finishing

  • Chromated treatment
  • Oiling
  • Anti-finger resin (color, no color)

Production process chart

QUALITY STANDARDS (SSSC’s standard – TCCS-03)

T-BEND: ≤ 2T

Coating thickness

Coating standard   Minimum coating mass in triple-spot test (g/m2)   Minimum coating mass on both sides at single-spot (g/m2)
AZ50 50 43
AZ60 60 51
AZ70 70 60
AZ90 90 76
Z100 100 85
AZ120 120 102
AZ150 150 130
AZ170 170 145
AZ185 185 160
AZ200 200 170

* Remarks: The standards of other coating thickness shall be agreed between the manufactuer and the purchaser.

Appearance: The product must be free from defects that are detrimental to its practical use.

Thickness tolerances

Nominal thickness Width < 1000 mm   Width ≥ 1000 mm
< 0,25 ± 0,04 ± 0,04
0,25 ÷ < 0,40 ± 0,05 ± 0,05
0,40 ÷ < 0,60 ± 0,06 ± 0,06
0,60 ÷ < 0,80 ± 0,07 ± 0,07
0,80 ÷ < 1,00 ± 0,07 ± 0,08
1,00 ÷ < 1,25 ± 0,08 ± 0,08
1,00 ÷ < 1,25 ± 0,08 ± 0,09
1,25 ÷ < 1,50 ± 0,10 ± 0,11

Width tolerances: 0 ÷ + 7mm

Flatness

Unit: mm

Width Type
  Wavy-edge (max) Center buckling (max)
< 1000 mm 8 6
≥ 1000 mm 9 8

Physical properties

  Thickness (t) mm H1 S1 S2
 

Tensile Strength

(Mpa)

0.30 ≤ t 550 - 800 270 - 400 401 - 549
 

Yield Point

(Mpa)

0.30 ≤ t - ≥ 205 ≥ 295
Elongation (%) 0.30 ≤ t <0.40 - ≥ 31 ≥ 10
0.40 ≤ t <0.60 - ≥ 34 ≥ 10
0.60 ≤ t <1.0 - ≥ 36 ≥ 10
1.0 ≤ t <1.6 - ≥ 37 ≥ 10

 

MARKING, PACKING AND MAINTENANCE

 

Packing

The product is packed either in accordance with the SSSC’s regulation or the customer’s requirement.

Transport and maintenance:

Transport: Transporting the product must avoid a big impact, which may be detrimental to quality, shape and appearance of the product.
Maintenance: It complies with the guide on maintenance attached on the product.

APPLICATIONS