etal@grupomarmex.mx 52 (55) 52783900

Railway Market

Etal is a market leader with over 50 years’ experience in the manufacture of electrical contacts in a variety of alloys for low, medium, and high voltage currents, as well as the electrical conduction parts produced for the rail transport sector, whether it be for the traction and/or braking systems of trains, plus fixed installations equipment for electric transmission.

Our products are manufactured by powder metallurgy procedures using top-quality raw materials so as to guarantee their chemical, electrical, and mechanical properties. To achieve this, we operate our own laboratories staffed with highly-qualified personnel.

Additionally, we offer our clients contact pads and assemblies, in different finishes, as well as special machining in copper, silver, plus their alloys, according to the specific needs of our customers. As a result, we have experience in a whole range of different technologies such as powder metallurgy, smelting, and forging, Computer Numerical Control (CNC), and traditional machining, plus assembly-line production, and electroplating (finishing) processes, all within the framework of a vertically structured company.

We are well aware that a key factor in the supply chain is that each client is assured of the resources that guarantee the company’s optimum operation and are thus able to respond quickly to any specific customer requirements. This is why we operate our own manufacturing plant, supported by a network of 10 sales offices located strategically throughout the country, thus ensuring both the sale and supply of materials in a timely manner to any company that provides train maintenance services.

Etal’s main objective is to assure customer satisfaction, which we achieve based on well-defined values, including compromise, responsibility, excellence, teamwork, communication, and integrity, as well as the highly personalized attention provided by our sales team, who are supported by our technical service staff, offering extensive experience in this sector. We guarantee the quality required by our clients, on-time product delivery, and aim to create long-term relationships with all our customers, both large and small.

Railway Market

In Etal de have developed more than 100 different alloys for electrical contacts, some of the most representative are:

  • Low Voltage: Fine Silver, Cadmium Silver-Oxide, Silver-Copper, Silver-Nickel.
  • Medium Voltage: Silver-Oxide of Cadmium, Silver-Oxide of tin, Silver-tungsten.
  • High Voltage: Tungsten-Copper, Tungsten-Silver, Silver-Molybdenum, Silver-Tungsten Carbide, Tungsten 100%, Molybdenum 100%.
  • Special machining: Special machining in copper, silver and its alloys.
  • Impedance bonds: Equipment for signaling systems in railway tracks.
  • Silver strip: For high voltage fuses.

ELECTRICAL CONTACTS PROPERTIES

  • Chemical Properties: High resistance to oxidation and corrosion.
  • Electrical Properties: High resistance to erosion caused by electric arc, maximum arc current and limit stress, low contact resistance and low resistivity.
  • Mechanical Properties: Resistance to deterioration and high hardness.
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