H4 dipping caps

H4 dimming caps.

H4 lamps for car headlamps have two filaments: one for full beam and one for low beam which is shielded by a molybdenum dimming cap. The dimming cap guides and limits the beam of light.

The point at which the light cast by car headlamps ends is closely regulated. The exact geometry and precise design of the dimming caps are therefore crucial.

And where absolute production precision is essential, Plansee has the answers: To meet our customers' requirements for zero defects, we produce H4 dimming caps of extremely high and reproducible quality. Before our dimming caps are dispatched to your premises, each one of them is subjected to a fully automatic inspection. Which is why our products are perfectly suited for your H4 production line.

Our molybdenum dimming caps reflect light particularly well. Molybdenum provides excellent thermal stability and is also ductile and easy to punch. The great purity of our material ensures optimum light yield - for the entire lifetime of the lamp.

To achieve a large effect with just a little material, we have developed particularly thin H4 dimming caps. These are only 0.12 mm thick. Despite this, our "slimline" products are just as weldable, robust and stable as conventional caps with a thickness of 0.14 mm.

We produce H4 molybdenum dimming caps in thicknesses of 0.1 to 0.14 mm and supply these cleaned and annealed. We pack our dimming caps in batches of 5 000 in airtight aluminum containers together with a desiccant to ensure dryness.

A single source for all your needs.

We handle every stage in the manufacture of our products in-house. From the raw materials through to the finished product: including the development of new materials. In this way, we can guarantee that you benefit from the very best quality.

We compress our metal powders and powder mixes at pressures of up to 2 t/cm² (tonnes per square centimetre) to form a so-called green compact. When end products with particularly demanding geometries are required, we make sure as ear
treatment /
Your contact person
Your contact Person for:
David Hoskins
Give me a call:
+1 508 446 5327
or send an Email: