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Multi-track and multi-metal seam welds of high temperature metallic sheets , AISI 304 , C-Mn steel , Nickel-based alloys , Cp Cu , Ti6Al4V and low temperature metallic sheets , AA6061 were obtained .
 engineering feature: seam welds; process parameter: temperature; material: metallic sheets; material: AISI 304; material: C-Mn steel; material: Nickel-based alloys; material: Cu; material: Ti6Al4V; process parameter: temperature; material: metallic sheets; material: AA6061
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:
 engineering feature: seam welds; process parameter: temperature; material: metallic sheets; material: AISI 304; material: C-Mn steel; material: Nickel-based alloys; material: Cu; material: Ti6Al4V; process parameter: temperature; material: metallic sheets; material: AA6061