1403
However , after heat treatment , significant improvement beyond ASTM standard can be observed in both strength and elongation as a consequence of the grain refinement .
 manufacturing process: heat treatment; concept or principle: standard; material: be; machanical property: strength; machanical property: elongation; material: as; process characterization: grain refinement
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:
 manufacturing process: heat treatment; concept or principle: standard; material: be; machanical property: strength; machanical property: elongation; material: as; process characterization: grain refinement