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The results were compared to AISI 316L that was classically forged.A preliminary mechanical and microstructural characterization was carried out in order to characterize the material and compare the properties of 3D printed with material that has been forged .
 mechanical, microstructural characterization, material, properties, 3D printed, material
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:
 mechanical, microstructural characterization, material, properties, 3D printed, material