E40    
  Steels with Aluzinc® aluminium-zinc coating   Last update: 2010-7-15

Thanks to its excellent corrosion resistance and spangled silver colour, Aluzinc® is very popular for applications such as roofing and structural sections.

 

Properties
   

Aluzinc® is a flat carbon steel product coated on both sides with an aluminium-zinc alloy. The coating is composed of 55% aluminium, 43.4% zinc and 1.6% silicon and applied by means of a continuous hot dip galvanising process. Aluzinc® is available in a wide range of steel grades: steels for cold forming and deep drawing applications, and structural steels. 

 

Advantages
   

The excellent corrosion resistance of Aluzinc® is a result of the properties of its two metallic constituents: the barrier effect of the aluminium present on the surface of the coating and the sacrificial protection of zinc.


The characteristic spangled silver colour of Aluzinc® gives it a very attractive appearance. Thanks to a thin transparent layer of aluminium oxide on the top surface of the coating, this appearance is preserved over time.


Aluzinc® offers additional advantages:

  • Good corrosion resistance at high temperatures
  • Good abrasion resistance because of its surface hardness
  • Excellent thermal and light reflectivity

 

Applications
   

Aluzinc® coated steels are used widely in both indoor and outdoor applications:

  • Construction: roofing, cladding, structural sections, composite panels, tiles etc
  • Domestic appliances: washing machines, tumble dryers, refrigerators, toasters, microwave ovens etc
  • Miscellaneous: boiler casings, air ducts, electrical cabinets, lighting, computer casings etc

 

Aluzinc® can be supplied oiled and/or with a chemical surface treatment, or with an Easyfilm® thin organic coating (please see data sheet E80 for the specific properties of Easyfilm®).

 

Aluzinc® Florelis is a product with improved uniformity, with the result that there is no visible difference between the sheets. It is specially designed for facades of buildings with the highest aesthetic requirements.

 

Recommendations for use
   

Storage

Aluzinc® is supplied passivated or oiled to temporarily limit any risk of black rust formation. During transport and storage, all necessary precautions must be taken to keep the material dry and to prevent the formation of condensation. Improved protection can be obtained by the application of an Easyfilm® coating.

 

Forming and joining

The forming and joining techniques currently used for uncoated steel sheets are also suitable for Aluzinc®.
The coating thickness must therefore be compatible with both the desired degree of corrosion protection and the requirements of the forming and welding processes envisaged. Forming performance is improved if Aluzinc® is coated with an Easyfilm® thin organic coating.

 

Painting

Aluzinc® can be painted after degreasing and surface treatment when delivered oiled. Aluzinc® coated with an Easyfilm® thin organic coating can be painted directly, without any prior surface treatment. However, the paint must be compatible with the Easyfilm® resin.

 

Weldability
   

In electrical resistance welding, the welding current must be suitably regulated and regularly adjusted. Electrode life can be extended by regularly stepping up the welding current and periodically dressing (machining) the electrodes.

 

Brand correspondence
   
 
Steels for cold forming and deep drawing applications
 ASTM A792EN 10215:1995EN 10326:2004EN 10327:2004EN 10292:2007EN 10346:2009Old brand names
DX51D +AZ EN 10346CSDX51D+AZ DX51D+AZ DX51D+AZAC2
DX51D AM FCE +AZFlorelis +Easyfilm®       
DX52D +AZ EN 10346FSDX52D+AZ DX52D+AZ DX52D+AZAC3
DX53D +AZ EN 10346 DX53D+AZ DX53D+AZ DX53D+AZ(AC4)
DX54D +AZ EN 10346DSDX54D+AZ DX54D+AZ DX54D+AZAC5
DX54D AM FCE +AZHFX +Easyfilm®       
DX56D AM FCE +AZ       
DX56D AM FCE +AZHFX +Easyfilm®       
Grades in italics: not included in the standard
 
Structural steels
 ASTM A792EN 10215:1995EN 10326:2004EN 10327:2004EN 10292:2007EN 10346:2009Old brand names
S220GD +AZ EN 10346  S220GD+AZ  S220GD+AZ 
S250GD +AZ EN 10346SS Grade 255 (37)S250GD+AZS250GD+AZ  S250GD+AZAC250
S280GD +AZ EN 10346SS Grade 275 (40)S280GD+AZS280GD+AZ  S280GD+AZAC280
S320GD +AZ EN 10346 S320GD+AZS320GD+AZ  S320GD+AZAC320
S350GD +AZ EN 10346SS Grade 345 (50)S350GD+AZS350GD+AZ  S350GD+AZAC350
S550GD +AZ EN 10346SS Grade 550 (80)S550GD+AZS550GD+AZ  S550GD+AZAC550
 
High strength low alloy steels
 ASTM A792EN 10215:1995EN 10326:2004EN 10327:2004EN 10292:2007EN 10346:2009Old brand names
H220YD +AZ EN 10346    HX220YD+AZHX220YD+AZ 
HX260LAD +AZ EN 10346    HX260LAD+AZHX260LAD+AZAC250NB
HX300LAD +AZ EN 10346    HX300LAD+AZHX300LAD+AZAC280NB
HX340LAD +AZ EN 10346    HX340LAD+AZHX340LAD+AZAC320NB
HX380LAD +AZ EN 10346    HX380LAD+AZHX380LAD+AZAC380
HX420LAD +AZ EN 10346    HX420LAD+AZHX420LAD+AZAC420
() Closest grade as no fully equivalent grade exists.


 

Dimensions
    Steels for cold forming and deep drawing applications
Thickness (mm)DX51D +AZ EN 10346DX51D AM FCE +AZFlorelis +Easyfilm®DX52D +AZ EN 10346, DX54D +AZ EN 10346, DX54D AM FCE +AZHFX +Easyfilm®, DX56D AM FCE +AZHFX +Easyfilm®DX53D +AZ EN 10346, DX56D AM FCE +AZ
Min widthMax widthMin widthMax widthMin widthMax widthMin widthMax width
0.20 ≤ th < 0.257001000------
0.25 ≤ th < 0.301200
0.30 ≤ th < 0.361350
0.36 ≤ th < 0.40150085014008501400
0.40 ≤ th < 0.707001500
0.70 ≤ th < 1.2070015001500
1.20 ≤ th < 2.00--

Structural steels
Thickness (mm)Min widthS220GD +AZ EN 10346, S250GD +AZ EN 10346, S280GD +AZ EN 10346S320GD +AZ EN 10346, S350GD +AZ EN 10346S550GD +AZ EN 10346
Max widthMax widthMax width
0.20 ≤ th < 0.257001000-1000
0.25 ≤ th < 0.3012001100
0.30 ≤ th < 0.36135012501250
0.36 ≤ th < 0.4615001350
0.46 ≤ th < 0.561450
0.56 ≤ th < 2.001500-

High strength low alloy steels
Thickness (mm)Min widthH220YD +AZ EN 10346, HX260LAD +AZ EN 10346, HX380LAD +AZ EN 10346, HX420LAD +AZ EN 10346HX300LAD +AZ EN 10346, HX340LAD +AZ EN 10346
Max widthMax width
0.30 ≤ th < 0.36700-1350
0.36 ≤ th < 0.4612501500
0.46 ≤ th < 0.701400
0.70 ≤ th < 2.001500



 

Mechanical properties
   
 
Steels for cold forming and deep drawing applications
 
Direction
Thickness (mm)
Re (MPa)
Rm (MPa)
A80 (%)
Bending ratio (th)
r 90
n 90
DX51D +AZ EN 10346T0.2 - 0.7≥ 140270 - 500≥ 20---
0.7 - 3≥ 22
DX51D AM FCE +AZFlorelis +Easyfilm®L< 1.2---< 0--
T< 0.8---< 0--
0.8 - 1.2≥ 140270 - 500≥ 22
DX52D +AZ EN 10346T0.2 - 0.7140 - 300270 - 420≥ 24---
0.7 - 3≥ 26
DX53D +AZ EN 10346T0.2 - 0.7140 - 260270 - 380≥ 28---
0.7 - 3≥ 30
DX54D +AZ EN 10346T0.2 - 0.7120 - 220260 - 350≥ 34---
0.7 - 3≥ 36
DX54D AM FCE +AZHFX +Easyfilm®L< 2---< 0--
T< 0.2---< 0--
0.2 - 0.7120 - 220260 - 350≥ 34≥ 1.4≥ 0.180
0.7 - 2≥ 36
DX56D AM FCE +AZL< 2---< 0--
T< 0.5---< 0--
0.5 - 0.7120 - 180260 - 330≥ 37≥ 1.5≥ 0.200
0.7 - 2≥ 39≥ 1.7
DX56D AM FCE +AZHFX +Easyfilm®T0.2 - 0.7120 - 180260 - 350≥ 37-≥ 1.5≥ 0.200
0.7 - 3≥ 39≥ 1.7
Grades in italics: not included in the standard
 
Structural steels
 
Direction
Thickness (mm)
Re (MPa)
Rm (MPa)
A80 (%)
Bending ratio (th)
r 90
n 90
S220GD +AZ EN 10346L< 0.2---< 0--
0.2 - 0.7≥ 220≥ 300≥ 18
0.7 - 3≥ 20
T< 3---< 0--
S250GD +AZ EN 10346L0.2 - 0.7≥ 250≥ 330≥ 17---
0.7 - 3≥ 19
S280GD +AZ EN 10346L0.2 - 0.7≥ 280≥ 360≥ 16---
0.7 - 3≥ 18
S320GD +AZ EN 10346L0.2 - 0.7≥ 320≥ 390≥ 15---
0.7 - 3≥ 17
S350GD +AZ EN 10346L0.2 - 0.7≥ 350≥ 420≥ 14---
0.7 - 3≥ 16
S550GD +AZ EN 10346L0.2 - 3≥ 550≥ 560----
 
High strength low alloy steels
 
Direction
Thickness (mm)
Re (MPa)
Rm (MPa)
A80 (%)
Bending ratio (th)
r 90
n 90
H220YD +AZ EN 10346L< 3---< 0--
T< 0.3---< 0--
0.3 - 3220 - 280340 - 410≥ 32≥ 1.4≥ 0.180
HX260LAD +AZ EN 10346T0.3 - 3260 - 330350 - 430≥ 24---
HX300LAD +AZ EN 10346T0.3 - 3300 - 380380 - 480≥ 21---
HX340LAD +AZ EN 10346T0.3 - 3340 - 420410 - 510≥ 19---
HX380LAD +AZ EN 10346T0.3 - 3380 - 480440 - 560≥ 17---
HX420LAD +AZ EN 10346T0.3 - 3420 - 520470 - 590≥ 15---


 

Chemical composition
   
 
Steels for cold forming and deep drawing applications
 
C (%)
Mn (%)
P (%)
S (%)
Si (%)
Al (%)
Nb (%)
Ti (%)
DX51D +AZ EN 10346 ≤ 0.120 ≤ 0.60 ≤ 0.100 ≤ 0.045 ≤ 0.50 - - ≤ 0.300
DX51D AM FCE +AZFlorelis +Easyfilm® ≤ 0.120 ≤ 0.60 ≤ 0.100 ≤ 0.045 ≤ 0.50 - - ≤ 0.300
DX52D +AZ EN 10346 ≤ 0.120 ≤ 0.60 ≤ 0.100 ≤ 0.045 ≤ 0.50 - - ≤ 0.300
DX53D +AZ EN 10346 ≤ 0.120 ≤ 0.60 ≤ 0.100 ≤ 0.045 ≤ 0.50 - - ≤ 0.300
DX54D +AZ EN 10346 ≤ 0.120 ≤ 0.60 ≤ 0.100 ≤ 0.045 ≤ 0.50 - - ≤ 0.300
DX54D AM FCE +AZHFX +Easyfilm® ≤ 0.120 ≤ 0.60 ≤ 0.100 ≤ 0.045 ≤ 0.50 - - ≤ 0.300
DX56D AM FCE +AZ ≤ 0.120 ≤ 0.60 ≤ 0.100 ≤ 0.045 ≤ 0.50 - - ≤ 0.300
DX56D AM FCE +AZHFX +Easyfilm® ≤ 0.120 ≤ 0.60 ≤ 0.100 ≤ 0.045 ≤ 0.50 - - ≤ 0.300
Grades in italics: not included in the standard
 
Structural steels
 
C (%)
Mn (%)
P (%)
S (%)
Si (%)
Al (%)
Nb (%)
Ti (%)
S220GD +AZ EN 10346 ≤ 0.200 ≤ 1.70 ≤ 0.100 ≤ 0.045 ≤ 0.60 - - -
S250GD +AZ EN 10346 ≤ 0.200 ≤ 1.70 ≤ 0.100 ≤ 0.045 ≤ 0.60 - - -
S280GD +AZ EN 10346 ≤ 0.200 ≤ 1.70 ≤ 0.100 ≤ 0.045 ≤ 0.60 - - -
S320GD +AZ EN 10346 ≤ 0.200 ≤ 1.70 ≤ 0.100 ≤ 0.045 ≤ 0.60 - - -
S350GD +AZ EN 10346 ≤ 0.200 ≤ 1.70 ≤ 0.100 ≤ 0.045 ≤ 0.60 - - -
S550GD +AZ EN 10346 ≤ 0.200 ≤ 1.70 ≤ 0.100 ≤ 0.045 ≤ 0.60 - - -
 
High strength low alloy steels
 
C (%)
Mn (%)
P (%)
S (%)
Si (%)
Al (%)
Nb (%)
Ti (%)
H220YD +AZ EN 10346 ≤ 0.010 ≤ 0.90 ≤ 0.080 ≤ 0.025 ≤ 0.20 - ≤ 0.090 ≤ 0.120
HX260LAD +AZ EN 10346 ≤ 0.120 ≤ 0.60 ≤ 0.030 ≤ 0.025 ≤ 0.50 ≥ 0.015 ≤ 0.090 ≤ 0.150
HX300LAD +AZ EN 10346 ≤ 0.110 ≤ 1.00 ≤ 0.030 ≤ 0.025 ≤ 0.50 ≥ 0.015 ≤ 0.090 ≤ 0.150
HX340LAD +AZ EN 10346 ≤ 0.110 ≤ 1.00 ≤ 0.030 ≤ 0.025 ≤ 0.50 ≥ 0.015 ≤ 0.090 ≤ 0.150
HX380LAD +AZ EN 10346 ≤ 0.110 ≤ 1.40 ≤ 0.030 ≤ 0.025 ≤ 0.50 ≥ 0.015 ≤ 0.090 ≤ 0.150
HX420LAD +AZ EN 10346 ≤ 0.110 ≤ 1.40 ≤ 0.030 ≤ 0.025 ≤ 0.50 ≥ 0.015 ≤ 0.090 ≤ 0.150


 

Coating properties
   
Aluzinc® Coating weight - double sided (g/m)Coating thickness (m per side)
AZ10010013
AZ15015020
AZ16516523
AZ18518525
AZ20020026



   
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