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The metallurgy of selected metal and alloy components fabricated by additive metallurgy using electron beam melting ( EBM ) is presented for a range of examples including Ti-6Al-4V , Co-Cr-Mo super alloy , Ni-base super alloy systems ( Inconel 625 , 718 and Rene 142 ) , Nb and Fe .
 concept or principle: metallurgy; material: metal; material: alloy; concept or principle: fabricated; material: additive; manufacturing process: electron beam melting; manufacturing process: EBM; process parameter: range; material: Ti-6Al-4V; material: super alloy; material: super alloy; material: Inconel 625; material: Rene; material: Nb; material: Fe
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: manufacturing standard, machanical property, manufacturing process, material, engineering feature, process parameter, machine or equipment, application, process characterization, enabling technology, biomedical, concept or principle 
Text: {0} 
 Entities: metallurgy, metal, alloy, fabricated, additive, electron beam melting, EBM, range, Ti-6Al-4V, super alloy, super alloy, Inconel 625, Rene, Nb, Fe 
Answer:
 concept or principle: metallurgy; material: metal; material: alloy; concept or principle: fabricated; material: additive; manufacturing process: electron beam melting; manufacturing process: EBM; process parameter: range; material: Ti-6Al-4V; material: super alloy; material: super alloy; material: Inconel 625; material: Rene; material: Nb; material: Fe