... ,304 L, 301,321, AF316L, 2520 and so on.The specification as follows: 20*3-660*3-1230*3-870*3 ... , withstand greater impact load a variety of molds and tools. For example, the insert on the complex shape of the punching ... tools, etc..4.Cr12MoV standard: GB / T-1299-19855.Chemical composition(for reference only): CSiMnSPCrNiCuvMo1.45~1.70≤0.40≤0.40 ...