8323
Successful 3D printing of metatsable high entropy alloy Fe40Mn20Co20Cr15Si5 ( CB-HEA ) is acheived .
 3D printing, alloy
Please list all entity words in the text that fit the category. Output format is "word1, 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} 
Answer:
 3D printing, alloy