C60/1060/1.0601/S60C

C60 steel is an unalloyed medium carbon engineering steel which has 0.57%-0.65% Carbon as per EN10083 standard.It has characteristics similar to that of C55 carbon steel which has high hardness and high strength  after hardening.C60 is difficult to weld,and machinability is poor due to high carbon content.This steel is generally supplied in an untreated or normalised condition.

Chemical Composition

Grade	C	Mn	P	S	Si	Cr	Mo	Ni	Cr+Mo+Ni
C60/1.0601	0.57-0.65	0.60-0.90	≤ 0.045	≤ 0.045	≤ 0.4	≤ 0.4	≤ 0.1	≤ 0.4	≤ 0.63
C60E/1.1221	0.57-0.65	0.60-0.90	≤ 0.03	≤ 0.035	≤ 0.4	≤ 0.4	≤ 0.1	≤ 0.4	≤ 0.63
C60R/1.1223	0.57-0.65	0.60-0.90	≤ 0.03	0.02-0.04	≤ 0.4	≤ 0.4	≤ 0.1	≤ 0.4	≤ 0.63

Relevant Standards

USA	UK	China	Japan	Australia
1060	070M60	60#	S60C	1060

Mechanical Property

Mechanical properties a at room temperature in the quenched and tempered condition (+QT)
Diameter d mm	≤ 16	16-40	40-100
Thickness t mm	< 8	8-20	20-60
Yield Strength Mpa	≥580	≥520	≥450
Tensile Strength Mpa	850-1000	800-950	750-900
Elongation, %	≥11	≥13	≥14
Reduction of area ,%	≥25	≥30	≥35

 

Mechanical properties a at room temperature in the normalized condition (+N)
Diameter d mm	≤ 16	16-100	100-250
Thickness t mm	≤ 16	16-100	100-160
Yield Strength Mpa	≥380	≥340	≥310
Tensile Strength Mpa	≥710	≥670	≥650
Elongation, %	≥10	≥11	≥11

Forging

C60 steel forging temperature:900 – 1100°C ,cooling as slowly as possible in sand after forged.

Heat Treatment

• Normalizing:  820 – 880°C,Cooling in air
• Soft Annealing:680 – 710°C,Cooling in furnace
• Hardening:810 – 850°C,water or oil quench
• Tempering:550 – 660°C,Cooling in air