Use of Products: ML20MnTiB is a common steel which is mostly used to produce fasteners of class 12.9. The product has characteristics of uniform-chemicalcomposition, low percentage of harmful elements, high purity, slight decarburization, good surface quality. After spheroidize annealing, this product has the characteristics of good cold heading properties ,stable heat-treatment properties, good hardenability and low grain-grow up tendency in cementite.