1.7147 20 MnCr 5



It is a case hardening steel. It has low hardenability, good machinability and weldability



%C %Si %Mn %P %S %Cr %Mo %Ni  % B
0,17-0,22 0,40          1,10-1,40 0,035 0,035 1,00-1,30

Hot working:

Forging temperature range: 1100-870℃

Note: Heat to 1240 ℃. Do not forge below 850.

Heat treatment:

Soft annealing Heat treatment to obtain a certain structure Heat treatment to obtain a certain tensile strength Carburize Core hardening Surface hardening Temper
650-700 850-950 900-1000 900-950 850-880 810-840 170-210


Main application:

Average size cog wheels, arbors etc. for Vehicle Gear Building

Shape of product:

Round, flat, step shape, ring, disc, shaft, other shape depend on customer needs