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SOURCE: AFI

On November 4, 2024, the Aeronautical Development Agency (ADA), responsible for the development of the Advanced Medium Combat Aircraft (AMCA), issued a tender for the procurement of raw materials required for the manufacturing of ECS (Environmental Control System) valves. These valves are a crucial component of the AMCA, playing a pivotal role in regulating and maintaining the aircraft’s environmental systems, ensuring optimal performance and survivability under various operational conditions.

The tender specifies the raw materials to be procured, primarily focusing on high-performance alloys and stainless steel that are essential for the demanding aerospace applications of the AMCA. The materials mentioned in the tender include various grades of Nimonic, Inconel, and 17-4 PH steel, all of which are well-known for their excellent strength, corrosion resistance, and thermal stability—key characteristics needed for aircraft components.

The required raw materials include the following:

  1. Nimonic 263/Inconel 718
    • Dia 150mm
    • Dia 135mm
    • Dia 110mm
    • Dia 80mm
    • Dia 30mm
  2. Nimonic 90/Inconel 625
    • Dia 65mm14 meters
  3. 17-4 PH Steel
    • Dia 140mm
    • Dia 115mm
    • Dia 70mm
    • Dia 45mm
  4. SS 440C (Stainless Steel)
    • Dia 55mm

These materials will be used in the production of critical components of the AMCA’s ECS system, with diameters ranging from 30mm to 150mm, tailored to specific design requirements. While the length of the materials has been removed from the tender, the specified dimensions indicate the precision and performance required for these parts.

The raw materials listed are integral to ensuring the reliability and performance of the AMCA’s ECS valves, which are responsible for controlling air circulation, cabin pressurization, and temperature regulation. These factors are crucial not only for the comfort and safety of the pilot but also for maintaining the structural integrity of the aircraft during various high-altitude and high-speed operations.

The Nimonic 263 and Inconel 718 alloys, in particular, are known for their high-temperature resistance and ability to withstand extreme stress, making them ideal for aerospace applications that involve high-performance systems. Similarly, 17-4 PH steel is selected for its superior strength and corrosion resistance, important for components that must endure the rigors of high-speed, high-pressure environments.

The procurement of these advanced materials reflects the AMCA program’s focus on indigenization and the local production of components critical to the aircraft’s performance. By sourcing these materials, the ADA is ensuring that the AMCA will be equipped with the best possible components, developed using the latest technology and materials science.

The procurement process also supports India’s defense manufacturing capabilities, as it emphasizes the local production of high-performance alloys. This is in line with the government’s push for self-reliance in defense, which is a cornerstone of India’s defense procurement strategy.






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