Dental Duplex steel is made up of: A Martensitic steel and austenitic steel B Ferritic grain of stainless steel C Ferritic + austenitic grains of stainless steel D Ferritic + martensitic grains of stainless steel 💡 Explanation Duplex steel is made up of: ✓ Correct Answer: C. Ferritic + austenitic grains of stainless steel