E30    
  Steels with galfan zinc-aluminium coating   Last update: 2011-1-31

The excellent corrosion resistance of this product makes it ideal for applications such as doors and garages, HVAC equipment, washing machine casings etc. One example is the structure for this greenhouse.

 

Properties
   

Galfan is a flat carbon steel product coated on both sides with a zinc-aluminium alloy. The coating is composed of 95% zinc and 5% aluminium and is applied by means of a continuous hot dip galvanising process.
Galfan is available in a very wide range of steel grades: steels for cold forming and deep drawing applications, structural steels and high strength low alloy steels.

 

Advantages
   

Because of the nature and the particular structure of its coating, galfan is characterised by very good ductility and excellent forming performance. It is therefore recommended for parts requiring severe deep drawing.

 

The presence of aluminium in the coating makes the corrosion resistance of galfan significantly higher than that of standard hot dip galvanised steel of equivalent thickness. Galfan offers excellent edge corrosion resistance.

 

Applications
   

Galfan is used in numerous industrial applications, such as:

  • Construction: structural or trim members, metallic ceilings, partitions and partition panels, doors, guttering, metallic door frames, swimming pools, road signs, greenhouses etc
  • Domestic appliances: casings of washing machines, tumble dryers, refrigerators etc
  • Miscellaneous: HVAC equipment, electrical cabinets, tanks, gas pumps, raceways, electric motor casings etc

 

Recommendations for use
   

Storage

Galfan is supplied passivated and/or oiled to temporarily limit any risk of white 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 rust prevention can be obtained by the application of Easyfilm® (please see data sheet E80 for the specific properties of Easyfilm®).

 

Forming and joining

The forming and joining techniques currently used for uncoated steel sheets are also suitable for galvanised steel.
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 will be improved if galfan is coated with an Easyfilm® thin organic coating.  

 

Painting

The organic paintability of galfan is very good both before forming (coil coating) and after forming (post-coating).
Degreasing and a suitable surface treatment are necessary before painting when the material is supplied oiled. Galfan supplied with an Easyfilm® thin organic coating can be painted directly without any surface treatment. However, the paint used 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
 EN 10214:1995NFA 36-323ASTM A875JIS 3317EN 10326:2004EN 10327:2004EN 10346:2009NFA 36-324Old brand names
DX51D +ZA EN 10346DX51D+ZAFCCSSZ AC C DX51D+ZADX51D+ZA DC51D+ZA
DX52D +ZA EN 10346DX52D+ZAFEFSSZ AC D1 DX52D+ZADX52D+ZA DC52D+ZA/Solstamp® 03
DX53D +ZA EN 10346DX53D+ZAFESDDSSZ AC D2 DX53D+ZADX53D+ZA  
DX54D +ZA EN 10346DX54D+ZAFEXEDDSSZ AC D3 DX54D+ZADX54D+ZA Solstamp® 04
DX56D +ZA EN 10346     DX56D+ZADX56D+ZA Solstamp® 05
DX57D +ZA EN 10346     DX57D+ZADX57D+ZA  
 
Structural steels
 EN 10214:1995NFA 36-323ASTM A875JIS 3317EN 10326:2004EN 10327:2004EN 10346:2009NFA 36-324Old brand names
S220GD +ZA EN 10346S220GD+ZA SS Grade 33 S220GD+ZA S220GD+ZAC220SC220GD+ZA
S250GD +ZA EN 10346S250GD+ZA SS Grade 37SZ AC 340S250GD+ZA S250GD+ZAC250SC250GD+ZA
S280GD +ZA EN 10346S280GD+ZA SS Grade 40SZ AC 400S280GD+ZA S280GD+ZAC280SC280GD+ZA
S320GD +ZA EN 10346S320GD+ZA  SZ AC 440S320GD+ZA S320GD+ZAC320 
S350GD +ZA EN 10346S350GD+ZA SS Grade 50SZ AC 490S350GD+ZA S350GD+ZAC350 
S550GD +ZA EN 10346    S550GD+ZA S550GD+ZA  


 

Dimensions
    Steels for cold forming and deep drawing applications
Thickness (mm)Min widthDX51D +ZA EN 10346, DX52D +ZA EN 10346DX53D +ZA EN 10346, DX54D +ZA EN 10346, DX56D +ZA EN 10346, DX57D +ZA EN 10346
Max widthMax width
0.22 ≤ th < 0.248001000-
0.24 ≤ th < 0.261090
0.26 ≤ th < 0.281130
0.28 ≤ th < 0.301180
0.30 ≤ th < 0.3212201010
0.32 ≤ th < 0.3412601050
0.34 ≤ th < 0.3613001090
0.36 ≤ th < 0.3813501140
0.38 ≤ th < 0.4013901180
0.40 ≤ th < 0.4514301280
0.45 ≤ th < 0.5015401360
0.50 ≤ th < 1.5016401630
1.50 ≤ th < 2.501520
2.50 ≤ th < 3.0015001200

Structural steels
Thickness (mm)Min widthS220GD +ZA EN 10346S250GD +ZA EN 10346S280GD +ZA EN 10346S320GD +ZA EN 10346S350GD +ZA EN 10346S550GD +ZA EN 10346
Max widthMax widthMax widthMax widthMax widthMax width
0.24 ≤ th < 0.26800106011001090--1050
0.26 ≤ th < 0.281110113011301090
0.28 ≤ th < 0.301160117011701120
0.30 ≤ th < 0.321200122012209901160
0.32 ≤ th < 0.341250126012701190
0.34 ≤ th < 0.3613001300131098010601240
0.36 ≤ th < 0.381350135013601060
0.38 ≤ th < 0.4014001400140011401210
0.40 ≤ th < 0.4514401450145012101280
0.45 ≤ th < 0.5015601560157014201350
0.50 ≤ th < 0.55164016401640161014001130
0.55 ≤ th < 0.60
0.60 ≤ th < 0.65162015201090
0.65 ≤ th < 0.701630
0.70 ≤ th < 0.801640-
0.80 ≤ th < 1.00
1.00 ≤ th < 1.501570
1.50 ≤ th < 1.80-1520152015201510
1.80 ≤ th < 2.001400
2.00 ≤ th < 2.101410
2.10 ≤ th < 2.15144014401300
2.15 ≤ th < 2.25134013401150
2.25 ≤ th < 2.401200
2.40 ≤ th < 2.50124012701120
2.50 ≤ th < 3.001200-



 

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 +ZA EN 10346T0.2 - 0.7≥ 140270 - 500≥ 20---
0.7 - 3≥ 22
DX52D +ZA EN 10346T0.2 - 0.7140 - 300270 - 420≥ 24---
0.7 - 3≥ 26
DX53D +ZA EN 10346T0.2 - 0.7140 - 260270 - 380≥ 28---
0.7 - 3≥ 30
DX54D +ZA EN 10346T0.2 - 0.7120 - 220260 - 350≥ 34-≥ 1.6≥ 0.180
0.7 - 3≥ 36
DX56D +ZA EN 10346T0.2 - 0.7120 - 180260 - 350≥ 38-≥ 1.5≥ 0.200
0.7 - 3≥ 40≥ 1.7
DX57D +ZA EN 10346L< 3---< 0--
T< 0.2---< 0--
0.2 - 0.7120 - 170260 - 350≥ 39≥ 1.9≥ 0.220
0.7 - 3≥ 41≥ 2.1
 
Structural steels
 
Direction
Thickness (mm)
Re (MPa)
Rm (MPa)
A80 (%)
Bending ratio (th)
r 90
n 90
S220GD +ZA EN 10346L0.2 - 0.7≥ 220≥ 300≥ 18---
0.7 - 3≥ 20
S250GD +ZA EN 10346L0.2 - 0.7≥ 250≥ 330≥ 17---
0.7 - 3≥ 19
S280GD +ZA EN 10346L0.2 - 0.7≥ 280≥ 360≥ 16---
0.7 - 3≥ 18
S320GD +ZA EN 10346L0.2 - 0.7≥ 320≥ 390≥ 15---
0.7 - 3≥ 17
S350GD +ZA EN 10346L0.2 - 0.7≥ 350≥ 420≥ 14---
0.7 - 3≥ 16
S550GD +ZA EN 10346L< 0.3---< 0--
0.3 - 3≥ 550≥ 560
T< 3---< 0--


 

Chemical composition
   
 
Steels for cold forming and deep drawing applications
 
C (%)
Mn (%)
P (%)
S (%)
Si (%)
Ti (%)
DX51D +ZA EN 10346 ≤ 0.120 ≤ 0.60 ≤ 0.100 ≤ 0.045 ≤ 0.50 ≤ 0.300
DX52D +ZA EN 10346 ≤ 0.120 ≤ 0.60 ≤ 0.100 ≤ 0.045 ≤ 0.50 ≤ 0.300
DX53D +ZA EN 10346 ≤ 0.120 ≤ 0.60 ≤ 0.100 ≤ 0.045 ≤ 0.50 ≤ 0.300
DX54D +ZA EN 10346 ≤ 0.120 ≤ 0.60 ≤ 0.100 ≤ 0.045 ≤ 0.50 ≤ 0.300
DX56D +ZA EN 10346 ≤ 0.120 ≤ 0.60 ≤ 0.100 ≤ 0.045 ≤ 0.50 ≤ 0.300
DX57D +ZA EN 10346 ≤ 0.120 ≤ 0.60 ≤ 0.100 ≤ 0.045 ≤ 0.50 ≤ 0.300
 
Structural steels
 
C (%)
Mn (%)
P (%)
S (%)
Si (%)
Ti (%)
S220GD +ZA EN 10346 ≤ 0.200 ≤ 1.70 ≤ 0.100 ≤ 0.045 ≤ 0.60 -
S250GD +ZA EN 10346 ≤ 0.200 ≤ 1.70 ≤ 0.100 ≤ 0.045 ≤ 0.60 -
S280GD +ZA EN 10346 ≤ 0.200 ≤ 1.70 ≤ 0.100 ≤ 0.045 ≤ 0.60 -
S320GD +ZA EN 10346 ≤ 0.200 ≤ 1.70 ≤ 0.100 ≤ 0.045 ≤ 0.60 -
S350GD +ZA EN 10346 ≤ 0.200 ≤ 1.70 ≤ 0.100 ≤ 0.045 ≤ 0.60 -
S550GD +ZA EN 10346 ≤ 0.200 ≤ 1.70 ≤ 0.100 ≤ 0.045 ≤ 0.60 -


 

Coating properties
   
GalfanCoating weight - double sided (g/m)Coating thickness (m per side)
ZA95957.0
ZA13013010.0
ZA18018013.5
ZA20020015.0
ZA25525519.5
ZA30030022.5



   
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All details provided in the ArcelorMittal Flat Carbon Europe S.A. catalogue are for information purposes only. ArcelorMittal Flat Carbon Europe S.A. reserves the right to change its product range at any time without prior notice.