** Australian Strategic Materials ASM.AX soars as much as 29.2% to A$0.655, highest since May 12
** Stock last up 23.1%; set for biggest intraday pct gain since August 2020
** Co's critical metals facility in South Korea, with capability to commercially produce rare earth metals and alloys, has seen rise in sale enquiries, customer discussions
** This comes amid China's curbs on rare earths exports
** Stock sees busiest session since April 22, with ~1.5 mln shares traded - 4.6x the 30-day avg
** YTD, ASM gains 18.8%
(Reporting by Anjali Singh)
((anjali.singh2@thomsonreuters.com;))