| Thickness (mm) | Width (mm) | Length (mm) |
| 300-1200 | 300-1600 | 2000-5800 |
EAF+LF+VD, Forged, Untreated or Normalized, UT 100% Passed
| Steel Grade | C | Si | Mn | P | S | Cr | Ni |
| S45C | 0.42-0.48 | 0.15-0.35 | 0.60-0.90 | ≤ 0.030 | ≤ 0.035 | ≤ 0.20 | ≤ 0.20 |
| S50C | 0.47-0.53 | 0.15-0.35 | 0.60-0.90 | ≤ 0.030 | ≤ 0.035 | ≤ 0.20 | ≤ 0.20 |
| S55C | 0.52-0.58 | 0.15-0.35 | 0.60-0.90 | ≤ 0.030 | ≤ 0.035 | ≤ 0.20 | ≤ 0.20 |
It is a medium carbon steel is used when greater strength and hardness is desired than in the"as rolled"condition. Extreme size accuracy, straightness and concentricity combine to minimize wear in high speed applications.
It is used for making large sized of plastic mould, or mold base. It is also a kind of Quenched and subsequently tempered steel for screws, forgings, wheel tyres, shafts, sickles, axes, knives, wood working drills, hammers, etc.
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