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E50 - Steels with Alusi® aluminium-silicon coating
The presence of silicon allows the coating to be used at very high temperatures, making it ideal for all applications where parts are subjected to heat.
Alusi® is a flat carbon steel product coated on both sides with an aluminium-silicon alloy. The coating is composed of 90% aluminium and 10% silicon and is applied by means of a continuous hot dip galvanising process. Alusi® is available in a wide range of steel grades: steels for cold forming and deep drawing applications, and structural steels.
Advantages
Alusi® is particularly suitable for applications requiring high resistance to oxidation at high temperatures. Up to 450°C, the top surface of the Alusi® coating does not alter and its thermal and light reflectivity remains at 80%, which is an important requirement for thermal shielding applications. The presence of silicon allows the coating to be used at temperatures as high as 650°C without flaking.
A passivating layer of aluminium oxide is formed instantly in contact with the oxygen present in air. Since this passivation protection renews itself naturally when damaged (scratches), the coating offers excellent resistance to corrosion and chemical attacks.
Applications
Because Alusi® can resist high temperatures, it is particularly suitable for use in thermal shielding. However, Alusi® also has many other applications:
Domestic appliances: ovens, deep fryers, toasters, barbecues etc
Alusi® can be supplied oiled and/or passivated, or with an Easyfilm® thin organic coating (please see data sheet E80 for the specific properties of Easyfilm®).
Under certain conditions, Alusi® is suitable for food contact, as specified in the Regulation (EC) No. 1935/2004 and French standard NF A 36-712-2. Please contact us for further information on this subject.
Recommendations for use
Alusi® must be transported and stored in a sheltered, moisture-free environment.
The forming and joining techniques currently used for uncoated steel are also suitable for Alusi®.
Alusi® coated steel can be welded using various types of resistance welding processes (spot, seam, butt welding). TIG, MIG, MAG, High Frequency Induction welding and laser welding are also suitable. When supplied oiled, Alusi® needs degreasing and surface treatment before painting.
Alusi® 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.
Coating weight and typical thickness
Alusi®
Coating weight - double sided (g/m²)
Coating thickness (µm per side)
AS50
50
8.5
AS60
60
10
AS80
80
13
AS100
100
17
AS120
120
20
AS150
150
25
AS240
240
40
For other coating thicknesses, please contact us.
Brand correspondence
Steels for cold forming and deep drawing applications
HX340LAD +AS EN 10346, HX380LAD +AS EN 10346, HX420LAD +AS EN 10346
Max width
Max width
0.35 ≤ th < 2.50
750
1525
1600
For the detailed feasibility, please contact us.
HX260LAD +AS EN 10346
HX260LAD +AS EN 10346
Thickness (mm)
Min width
Max width
0.35 ≤ th < 2.50
750
1525
HX300LAD +AS EN 10346
HX300LAD +AS EN 10346
Thickness (mm)
Min width
Max width
0.35 ≤ th < 2.50
750
1525
HX340LAD +AS EN 10346
HX340LAD +AS EN 10346
Thickness (mm)
Min width
Max width
0.35 ≤ th < 2.50
750
1600
HX380LAD +AS EN 10346
HX380LAD +AS EN 10346
Thickness (mm)
Min width
Max width
0.35 ≤ th < 2.50
750
1600
HX420LAD +AS EN 10346
HX420LAD +AS EN 10346
Thickness (mm)
Min width
Max width
0.35 ≤ th < 2.50
750
1600
Prev grade Next grade
For the detailed feasibility, please contact us.
Mechanical properties
Steels for cold forming and deep drawing applications: mechanical properties transverse to the rolling direction Structural steels: mechanical properties in the rolling direction (longitudinal) High Strength Low Alloy steels: mechanical properties transverse to the rolling direction
Steels for cold forming and deep drawing applications
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.
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