The Q17Cr3-Bproduced by XINGTAI STEEL has the advantages of stable composition, low harmful elements, high purity of steel, small decarbonization layer and less surface defects. A customer of XINGTAI STEEL used the product to produce piston pin of passenger car engine, which reflected that the product was easy to spheroidize annealing, low cold heading cracking rate, stable heat treatment quality, good hardenability and uniform hardness.