990
However , LAM manufacturing of martensitic stainless steel structures leads to a considerably enhanced mechanical strength ( more than double ) at the expense of reduced ductility , because of martensitic phase transformations under higher cooling rates .
 manufacturing process: LAM; material: martensitic stainless steel; machanical property: mechanical strength; machanical property: ductility; concept or principle: phase; process parameter: cooling rates
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: LAM, martensitic stainless steel, mechanical strength, ductility, phase, cooling rates 
Answer:
 manufacturing process: LAM; material: martensitic stainless steel; machanical property: mechanical strength; machanical property: ductility; concept or principle: phase; process parameter: cooling rates