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Among the latest formulations , maraging steel 18Ni-300 , which is a martensite-hardenable alloy , is often used when both high fracture toughness and high strength are required , or if dimensional changes need to be minimised .
 material: maraging steel; material: alloy; concept or principle: fracture; machanical property: strength; material: be
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: maraging steel, alloy, fracture, strength, be 
Answer:
 material: maraging steel; material: alloy; concept or principle: fracture; machanical property: strength; material: be