EN 10346 Grade DX51D hot dip aluminium-silicon coated (+AS)
EN 10346 Grade DX51D hot dip aluminium-silicon coated (+AS) introduction
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.
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.
Equivalent material: AFNOR AS C, AFNOR AS TC, ASTM A463 Grade CS, JIS SA1C
EN 10346 Grade DX51D hot dip aluminium-silicon coated (+AS) chemical
| Property |
Value |
Comment |
| Carbon |
Carbon of 0.18 % |
max. |
| Manganese |
Manganese of 1.2 % |
max. |
| Phosphorus |
Phosphorus of 0.12 % |
max. |
| Silicon |
Silicon of 0.5 % |
max. |
| Sulfur |
Sulfur of 0.045 % |
max. |
| Titanium |
Titanium of 0.3 % |
max. |
EN 10346 Grade DX51D hot dip aluminium-silicon coated (+AS) electrical
| Property |
- |
- |
| Application areas |
| Coating |
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 |
EN 10346 Grade DX51D hot dip aluminium-silicon coated (+AS) mechanical
| Property |
Value |
Comment |
| Elongation |
Elongation of 18 % |
min. | for thickness 0.3-0.5 mm | Transverse | A80 |
| - |
Elongation of 20 % |
min. | for thickness 0.5-0.7 mm | Transverse | A80 |
| - |
Elongation of 22 % |
min. | for thickness 0.7-3 mm | Transverse | A80 |
| Tensile strength |
Tensile strength of 270 - 500 MPa |
for thickness 0.3-3 mm | Transverse |
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