More particularly, the present invention relates to {HEAD ~ a ferritic heat resistant steel} for {TAIL ~ use} in high temperature and high pressure environments, which has improved creep rupture strength and improved resistance to intermetallic compound precipitation induced embrittlement 
More particularly , the present invention relates to { HEAD ~ a ferritic heat resistant steel } for { TAIL ~ use } in high temperature and high pressure environments , which has improved creep rupture strength and improved resistance to intermetallic compound precipitation induced embrittlement
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