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SAIL supplied special-quality steel for Chandrayaan-2

SAIL indigenously developed the Russian grade austenitic stabilized stainless steel which was used in the construction of Chandrayaan-2 cryogenic rocket engine
New Delhi: State-owned Steel Authority of India said on Monday that it supplied special-quality stainless steel from its Salem Steel Plant for the country’s moon mission Chandrayaan-2. “Steel Authority of India Ltd (SAIL) has supplied special-quality stainless steel from its Salem Steel Plant for India’s moon mission Chandrayaan-2 meeting the ISRO’s requirements for stringent specifications, superior surface finish and close tolerances,” an official statement from SAIL said. SAIL indigenously developed the Russian grade ICSS-1218-321(12X18H10T) austenitic stabilized stainless steel which was used in the construction of the cryogenic rocket engine of Chandrayaan-2.

‘A major step’

“The public sector monolith Steel Authority of India Ltd. along with ISRO have taken a major step forward as a part of the MAKE IN INDIA initiative advanced by Hon’ble Prime Minister Shri Narendra Modi for indigenously developing the exotic Russian grade ICSS-1218-321(12X18H10T) austenitic stabilized stainless steel used in the construction of the cryogenic rocket engines that are being made at ISRO,” the statement said.

SAIL team worked in collaboration with ISRO

As a part of this initiative, scientists from Liquid Propulsion System Centre (LPSC) of ISRO and the SAIL team at its Salem Steel Plant have closely collaborated and successfully rolled the stainless steel coils at Salem. “In this, Electro Slag Remelted (ESR) and forged slabs conforming to ICSS-1218-321 austenitic stainless steel slabs provided by ISRO has been successfully hot rolled in the Hot Rolling/Steckel Mill at SAIL’s Salem Steel Plant. This hot rolled coil of 4 mm thickness was further cold rolled to 2.3 mm thickness as required by ISRO. This 2.3 mm thick sheet has been used in the Cryogenic Engine (CE20) of Chandrayaan mission,” the statement said. SAIL has also previously collaborated with ISRO to provide steel for the country’s space missions. With this major breakthrough, SAIL is optimistic of leveraging other aerospace grades of stainless steel for the space launch vehicle components in future.