435
However , using irregularly shaped Ti-6Al-4V powder from the Hydride-Dehydride ( HDH ) process is more economical because fewer processing steps are required and it can use recycled material as feedstock .
 material: Ti-6Al-4V powder; concept or principle: process; concept or principle: recycled material; material: as
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: Ti-6Al-4V powder, process, recycled material, as 
Answer:
 material: Ti-6Al-4V powder; concept or principle: process; concept or principle: recycled material; material: as