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In this study , comparison of the bead on plate welds between AM parts and sheet metal parts is done.Used material was 316L stainless steel , AM and sheet metal , and parts were welded with laser welding .
 process characterization: bead; engineering feature: welds; machine or equipment: AM parts; material: sheet metal; material: material; material: 316L stainless steel; manufacturing process: AM; material: sheet metal; manufacturing process: welded; manufacturing process: laser welding
Please list all entity words in the text that fit the category.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} 
Answer:
 process characterization: bead; engineering feature: welds; machine or equipment: AM parts; material: sheet metal; material: material; material: 316L stainless steel; manufacturing process: AM; material: sheet metal; manufacturing process: welded; manufacturing process: laser welding