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