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1.1191

C45

This grade is used when greater strength and hardness is desired in the as-rolled condition. This medium-carbon steel can be hammer forged. This respond to heat treatment, and flame and induction hardening, but is not recommended for carburizing or cyaniding. When special practices is employed, weldability is fair. Die forging and hot upsetting of this grade is good to excellent.

Standard Designation	Grade, Class, Type, Symbol or Name	Steel Number	UNS Number	Product Form/Heat Treatment	Thickness		Yield Strength, min		Tensile Strength, min		Elongation, min, %	Other
Standard Designation	Grade, Class, Type, Symbol or Name	Steel Number	UNS Number	Product Form/Heat Treatment	t, mm	t, in.	N/mm² or MPa	ksi	N/mm² or MPa	ksi	Elongation, min, %	Other
EN 10250-2:1999	C45	1.0503	—	N or NT	≤ 100	—	305	—	580	—	16	—
					100 < t ≤ 250	—	275	—	560	—	16	18 J at 23°C
					250 < t ≤ 500	—	240	—	540	—	16	15 J at 23°C
					500 < t ≤ 1000	—	230	—	530	—	15	12 J at 23°C

Composition:

%C	%Si	%Mn	%P	%S	%Cr	%Mo	%Ni	other
0,42-0,50	≤0,40	0,50-0,80	0,035	0,035	≤0,40	0,10	≤0,40	Cr+Mo+Ni ≤ 0,63

Hot working:

Forging temperature range: 1100-850℃

Note: Heat to 1200 ℃. Do not forge below 850.

Heat treatment:

Soft annealing ℃	HB 30-soft annealed	Normalizing ℃	Hardening temperature for quenching in Water ℃	Hardening temperature for quenching in Oil ℃	Tempering temperature ℃
650-700	207	840-870	820-850	830-860	540-680

Main application:

Parts for crushing machines

Shape of product:

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