We manufacture forging ingots, billets, and blooms in carbon steel specifically for C65, designed for high strength and high wear resistance engineering applications. C65 is a high carbon, unalloyed steel grade known for its excellent hardness, superior wear resistance, and good edge-holding capability after heat treatment. Due to its high carbon content, C65 is ideally suited for applications where surface hardness and abrasion resistance are critical.
C65 exhibits excellent response to quenching and tempering, resulting in high hardness levels. While its machinability is lower than medium carbon steels, it provides outstanding performance in wear-intensive and load-bearing components. C65 is widely used in tooling, automotive, and general engineering applications where durability and long service life are required.
| Element | Content (%) | Function / effect |
| Carbon (c) | 0.60 - 0.70 | Provides very high hardness, strength, and wear resistance |
| Manganese (Mn) | 0.60 - 0.90 | Improves hardenability and toughness |
| Silicon (si) | 0.15 - 0.35 | Increases strength and acts as deoxidizer |
| Phosphorus (p) | Max 0.050 | Impurity; limited to maintain toughness |
| Sulphur (s) | Max 0.050 | Improves machinability when controlled |
| Chromium (cr) | Nil | Not intentionally added |
| Nickel (ni) | Nil | Not present |
| Molybdenum (mo) | Nil | Not present |
| Other elements | — | No significant alloying additions |
(Properties may vary depending on section size and heat treatment conditions)
Proper heat treatment is essential for C65 to maximize hardness while controlling brittleness.
C65 has several comparable grades across international standards, including:
C65 is the ideal choice for applications where high hardness, wear resistance, and durability are critical. Its high carbon content allows it to achieve very high hardness after heat treatment, making it suitable for cutting, wear, and high-stress components. When properly heat treated, C65 delivers excellent performance and extended service life.
| Grade | Carbon (%) | Key applications | Heat treatment | Comments |
| C65 | 0.60 - 0.70 | Blades, springs, wear parts | Quenching & tempering | Very high hardness and wear resistance |
| C45 | 0.40 - 0.50 | Shafts, gears | Quenching & tempering | Lower hardness than C65 |
| EN9 | 0.50 - 0.60 | Tools and machine parts | Q&t | Medium-high carbon grade |
| AISI 1065 | 0.62 - 0.70 | Springs and cutting tools | Q&t | American equivalent |
C65 is a high carbon steel designed for demanding applications requiring superior hardness and wear resistance. With excellent heat treatment response and cost-effective performance, C65 is a reliable material for tools, blades, springs, and high-wear engineering components.