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The experimental results indicate that the corrosion current density ( Icorr ) of carbon steel claddings , ranging from 11.023 × 10−3 to 3.372 × 10−3 mA∙cm−2 , is lower than that of the HSS alloy ( 19.247 × 10−3 mA∙cm−2 ) .
 concept or principle: experimental; concept or principle: corrosion; machanical property: density; material: carbon steel; material: HSS; material: alloy
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:
 concept or principle: experimental; concept or principle: corrosion; machanical property: density; material: carbon steel; material: HSS; material: alloy