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The production of high-performance Ti-6Al-4 V components typically requires multiple hot forging steps and leads to parts with tolerances that need extensive machining to create the final shape .
 manufacturing process: production; material: Ti-6Al-4 V; machine or equipment: components; manufacturing process: forging; process parameter: tolerances; manufacturing process: machining
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: production; material: Ti-6Al-4 V; machine or equipment: components; manufacturing process: forging; process parameter: tolerances; manufacturing process: machining