Continuously hot-dip zinc coated flat products for structural use (+Z)

The tables hereunder show the main characteristics of the relevant quality grades and do not fulfill the complete technical supply conditions for which we refer to the full content of the standards mentioned in these pages.

Supply technical delivery conditions: 
EN 10346:2009
Dimensional and shape tolerances: 
EN 10143:2006
Mechanical characteristics: 
QUALITY MECHANICAL CHARACTERISTICS
Coating Type
(1)
Ys/ 0,2% Ps
(Mpa)
Ts
(Mpa)
E%
min.
L0=80mm
E%
min.
L0=80mm
E%
min.
L0=80mm
Thickness (S) 0,35<=S<=4 0,35<=S<=4 0,35<=S<=0,5 0,5<S<=0,7 0,7<S<=4
S220GD +Z,+AZ 220 300 16 18 20
S250GD +Z,+AZ,
+AS
250 330 15 17 19
S280GD +Z,+AZ,
+AS
280 360 14 16 18
S320GD +Z,+AZ,
+AS
320 390 13 15 17
S350GD +Z,+AZ,
+AS
350 420 12 14 16
S550GD +Z,+AZ 550 560 - - -

The values are referred to specimens taken crosswise respect to the rolling direction.

Notes:
(1) – Coatings key:
+Z: Zinc alloy coating, with Zinc content >= 99%
+AZ: Aluminium-Zinc alloy coating, with: 55% Aluminium, 1,6% Silicon, and Zinc as the balance.
+AS: Aluminium-Silicon alloy coating, with: 8-11% Silicon and Aluminium as the balance.

Ladle analysis chemical composition (% values): 
QUALITY LADLE CHEMICAL COMPOSITION (max. % Values)
Coating
Type.
C Mn Si P S Al Ti V Mo B
S220GD +Z,+AZ 0,20 1,70 0,60 0,10 0,045     -        -        -        -        -   
S250GD +Z,+AZ,
+AS
0,20 1,70 0,60 0,10 0,045     -        -        -        -        -   
S280GD +Z,+AZ,
+AS
0,20 1,70 0,60 0,10 0,045     -        -        -        -        -   
S320GD +Z,+AZ,
+AS
0,20 1,70 0,60 0,10 0,045     -        -        -        -        -   
S350GD +Z,+AZ,
+AS
0,20 1,70 0,60 0,10 0,045     -        -        -        -        -   
S550GD +Z,+AZ 0,20 1,70 0,60 0,10 0,045     -        -        -        -        -   

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