6150 carbon steel, this high carbon steel has optimal durability, flexibility and edge retention properties when well tempered. An excellent steel well suited for premium swords.
Its main features:
- High resistance.
- Medium hardness.
- High edge retention.
- Up to 55 HRC.
- High flexibility.
Chemical Composition (%): C:0.55 Cr:1.00 Si:0.35 Mn:1.00 V:0.20
This steel is recommended for both professionals and beginners, its degree of work difficulty is Low.
It is supplied Annealed (soft), to facilitate the work.
- Forging: 900 to 1000 ºC. Very slow cooling in oven or insulating materials (sand, salts, mica).
- Normalizing: 900 ºC. To eliminate structural stresses caused by forging or roughing. Recommended time, 1.5 hours.
- Hardening (oil): Preheat to 700ºC, then raise to 845-900ºC, maintaining at least 2 minutes per millimeter (Minimum 10 min). Cooling in oil, preheated to 60-70ºC. Hardness of 52-55 HRC.
- Tempering: 150-200ºC slow heating. Once the temperature is reached, maintain 60 minutes. We will get 50-52 HRC. Cool in air
It is recommended to perform quenching and tempering in a conservative atmosphere, due to its high decarburization, see quenching sheet.
This is the recommended heat treatment, there are others. You can vary temperatures, times or method of carrying it out, depending on your needs or experience in said process.
MATERIAL CUT THROUGH A MECHANICAL PROCESS MAY PRESENT CURVATURE (not completely flat).