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Superficies y revestimientos para productos laminados
The surface quality depends greatly on the roughness. We offer the following roughnesses as standard:
| Maximum value Special tolerance (µm) | Maximum value Special tolerance I (µm) | Maximum value Special tolerance II (µm) | ||||
| Thickness (mm) | Ra | Rmax | Ra | Rmax | Ra | Rmax |
| 0.1 - 0.4 | 0.25 | 2 | 0.18 | 1.4 | 0.13 | 1 |
| 0.4 - 1.0 | 0.25 | 2 | 0.2 | 1.6 | 0.18 | 1.4 |
| 1.0 - 1.5 | 0.5 | 2 | - | - | 0.2 | 1.6 |
| 1,5 - 3,0 | 0,3 | 3 | * | * | * | * |
Modification possible due to alloy or thickness
If you wish the end products to fulfil high visual requirements, we can offer you a range of special qualities to choose from:
These special products set certain restrictions on the range of geometries. Our experts will be pleased to advise you on the surface qualities best fulfilling your requirements.
Sheets and strips may be provided with a protective film of PE that protects the surfaces against mechanical damage during downstream machining processes. The film is attached with an acrylic adhesive and can be drawn off after processing.
| Sizes of strip with a protective coating | ||
| Thickness (mm) | Width (mm) | Coating |
| 0,3 - 2,0 | 30 - 700 | single- or double-sided |
| Sizes of sheet with protective coating | |||
| Thickness (mm) | Width (mm) | Length (mm) | Coating |
| 0,3 - 1,0 | 500 - 800 | 500 - 3.000 | single- or double-sided |
| 1,0 - 10,0 | 500 - 1.250 | 500 - 4.000 | single- or double-sided |
| Sizes of strip cut to length with protective coating | |||
| Thickness (mm) | Width (mm) | Length (mm) | Coating |
| 0,3 - 1,0 | 150 - 500 | 700 - 2.500 | single-sided |
| 1,0 - 10,0 | 20 - 500 | 200 - 4.000 | single-sided |
In electrical and electronic applications, contact resistance plays a crucial role. The formation of oxide layers can compromise this severely and may cause contact failure. As a rule, therefore, at least the contact zones are coated. The most common coatings are of tin or tin alloys. Our products are treated on ultra modern hot dip tinning plant. A range of tin plated variants are possible, depending on the customer’s requirements.
We can also offer strips with full or selective silver or nickel plating. These strips you can purchase directly from us as a single source. They are finished at external partner companies.
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