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The behavior of high performance super duplex stainless steel ( SDSS ) during additive manufacturing ( AM ) has been investigated using a novel arc heat treatment technique .
 concept or principle: performance; material: stainless steel; manufacturing process: additive manufacturing; manufacturing process: AM; concept or principle: arc
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: performance, stainless steel, additive manufacturing, AM, arc 
Answer:
 concept or principle: performance; material: stainless steel; manufacturing process: additive manufacturing; manufacturing process: AM; concept or principle: arc