Abstract: ABSTRACT: This paper introduces the material selection of main steam, primary and secondary reheating hot section container and large pipe of 630℃ ultra-supercritical second National Electric Power Demonstration Project, analyzes the composition and performance differences of independent new martensitic heat resistant steel G115 , and introduces the current engineering trial production situation. Through the analysis of the risk of the first engineering application of the new material, The whole cycle metal supervision and control measures in standardization, supervision network establishment, manufacturing and installation quality control, operation supervision, overhaul supervision, database establishment and other aspects are put forward to explore the establishment of a perfect new material metal supervision system。