410
The final hardness values vary from about 220 to 280 HV2 ; the yield stress and tensile strength are 520 and 790 MPa , respectively , and a toughness of about 50 J is obtained at room temperature .
 machanical property: hardness; machanical property: yield stress; machanical property: tensile strength; concept or principle: MPa; machanical property: toughness; process parameter: temperature
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:
 machanical property: hardness; machanical property: yield stress; machanical property: tensile strength; concept or principle: MPa; machanical property: toughness; process parameter: temperature