1.7147

20MnCr5

 

20MnCr5 is low-carbon, chromium, carburizing steel with low case hardenability and low-to-medium core hardenability. This steel is available as hot worked and cold finished bar, rod, and wire; seamless mechanical tubing; and

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: 1245-850℃

Note: Heat to 1245 ℃. 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	intermediate annealing	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 and gear building

Shape of product:

 

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