C60/1060/1.0601/S60C Carbon Steel
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
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