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SAIL SSP Rolled Stainless Steel to Power Chandrayan 2

Steel News - Published on Mon, 15 Jul 2019

Image Source: India Today
Steel Authority of India Limited and Indian Space Research Organisation have developed Russian grade ICSS-1218-321(12X18H10T) austenitic stabilized stainless steel for construction of the cryogenic rocket engines, which will power Chandrayan 2 mission planned for July 15, 2019.

Scientists from Liquid Propulsion System Centre of ISRO and the SAIL team at Salem Steel Plant have collaborated and successfully rolled a trial batch of stainless steel coils at Salem. In this, Electro Slag Remelted and forged slabs conforming to ICSS-1218-321 austenitic stainless steel slabs provided by ISRO were successfully hot rolled in the Hot Rolling Steckel Mill at SSP. 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 divergent of the Chandrayan mission. The CE20 engine of ISRO has a double walled chamber, where 2.3 /0.6 mm thick 321 stainless steel sheets are used. In this chamber, the 2.3 mm stainless sheets provided by SSP are used. Besidesthis another five engines were manufactured with SSP made ICSS-1218-321 sheets.

With this major breakthrough, SAIL and LPSC authorities are optimistic that the present initiative would be followed up and replicated for ISRO’s further requirements in grades like 304L and 316 Ti.

Source :

Posted By : Ratan Singh on Mon, 15 Jul 2019
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