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Photo Etching

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Etching Titanium and Other Specialty Materials

Available Materials for Photo Etching Thin Precision Parts
Tech-Etch specializes in photo etching or photo chemical milling parts from difficult to etch specialty materials, such as Tungsten, Elgiloy, Nitinol, Molybdenum, Titanium and Kapton® (polyimide film), which have material characteristics attractive to the medical industry for implants, springs, cathodes, blades, and stents. Parts can be made from metals as thin as .0005".

Tech-Etch also photo etches parts from many other metals such as Copper Alloys, Beryllium Copper, Stainless Steels, Aluminum, Nickel and Nickel Alloys, Silver, and Spring Steels. Photo etching offers the flexibility of manufacturing prototype quantities and large production runs while maintaining tight tolerance without the high tooling costs and long lead times associated with stamping.

Formed parts are manufactured by combining photoetching, used for blanking, with inexpensive or universal tooling, used for forming. Heat treatment is available to enhance spring qualities.

Photo Etched Precision Parts

In addition to photo etching, Tech-Etch offers a wide variety of in-house capabilities including laser cutting for thicker materials, forming, plating, laminating, and stamping.

Specialty Materials

Because tungsten is extremely dense, 71% heavier than lead, it is used in medical applications, which include grids used to collimate and attenuate stray x-rays in CT scanners, as well as ID tags used in implanted medical devices. Tungsten is also well known for retaining its strength at high temperatures. For that reason it is used in applications such as filaments in vacuum and x-ray tubes, plus heating elements and rocket engine nozzles.

MOLYBDENUM is a difficult to etch refractory material used for high-temperature, corrosion resistant applications.

TITANIUM is strong, light weight and highly resistant to corrosion. Its strength is comparable to 304 stainless steel. Tech-Etch specializes in the photo chemical etching of titanium. Because of its low weight, strength and corrosion resistance, titanium is used in everything from jet engines to eyeglass frames. Because titanium is inert and completely biocompatible, it is also used in many medical implantation applications such as maxillofacial and craniofacial reconstruction plates (pictured at right), as well as anode and cathode battery current collectors and telemetry antennas found in implanted medical devices. Tech-Etch is a leader in the supply of component parts made from titanium.

ELGILOY is typically used when requirements call for a material that is highly corrosion resistant with high fatigue strength. It is used for human implants.

KAPTON is a polyimide film that exhibits good physical, chemical and electrical properties over a wide temperature range. Its electrical and chemical resistance properties are excellent even at unusually high temperatures. Tech-Etch photo etches polyimide film to make flat parts for many applications. Typical applications for photo etched polyimide parts include non-conductive washers (pictured at right), screens, gaskets, insulation layers and liners, as well as haptics.
® Kapton is a DuPont registered trademark.

NIOBIUM is a light weight refractive material with excellent high temperature corrosion resistance. It is ductile and easily formed.

NITINOL is a shape memory alloy. Its unique characteristics allow it to return to a predetermined shape after undergoing deformation. NITINOL has excellent biocompatibility, good spring characteristics and high corrosion resistance.

Etched Tungsten Parts
Tungsten grids used in CT scanners & ID tags
for implanted medical devices.

Titanium Mesh Implant
Titanium Mesh Implant

Polyimide Parts
Polyimide Parts
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