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As Japanese steel grade, S55C belongs to high-grade high-quality medium carbon steel and is equivalent to China's high-quality carbon structural steel #5. It is fully killed steel manufactured by steelmaking methods of electric furnace, open-hearth furnace or pure oxygen converter, and has excellent workability and uniform metallographic structure. The steel is cheap and easy to process, and suitable for surface hardening treatments such as high-frequency quenching and flame quenching.
Steel Grade | C | Si | Mn | P | S | Cr | Cu | Ni |
S55C | 0.52-0.58 | 0.15-0.35 | 0.60-0.90 | ≤0.030 | ≤0.035 | ≤0.20 | ≤0.30 | ≤0.20 |
After heat treatment, it has high surface hardness and strength, and medium cutting performance, as well as poor plasticity, toughness, weldability and hardenability. Water quenching has a tendency to form cracks.
Backing plate of various cold work molds.
Fixing plate of drilling jig.
Standard moldboard materials, etc.
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Focus on manufacturing special steel cast and forged
components for more than 25 years.