Equivalent material of ASME in AD Merkblatter

I am student and designing a shell, head and radial nozzle in hemi head with ASME, PD 5500 and AD Merkblatter. I am using 1.25 Cr 0.5 Mo material for plate and nozzle forging. I want to take equivalent material in AD Merkblatter. Which material in AD M is equivalent to 1.25 Cr 0.5 Mo.