1.7147

20 MnCr 5

 

 

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

Composition:

 

%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