we manufacture forging ingots, billets, and blooms in carbon steel specifically for CK-35, designed for medium-strength engineering applications. CK-35 is a medium carbon, non-alloy steel known for its good balance of strength, toughness, and machinability. It is suitable for components that require moderate Mechanical properties and good response to heat treatment. With controlled carbon and manganese content, CK-35 offers reliable performance in general engineering, automotive, and machined part applications at a cost-effective level.
| Element | Content (%) | Function / effect |
| Carbon (c) | 0.32 – 0.39 | Provides strength and hardness |
| Manganese (mn) | 0.50 – 0.80 | Improves hardenability and toughness |
| Silicon (si) | Max 0.40 | Enhances strength and elasticity |
| Phosphorus (p) | Max 0.035 | Impurity; controlled to maintain toughness |
| Sulphur (s) | Max 0.035 | Impurity; controlled for machinability |
CK-35 offers a reliable combination of moderate strength, good machinability, and cost efficiency. It is ideal for components that do not require high alloy content but still need consistent mechanical performance.
| Grade | Carbon (%) | Key applications | Heat treatment | Comments |
| CK-35 | 0.32 – 0.39 | Shafts, fasteners | Normalizing / q&t | Good machinability and strength |
| C35 | 0.32 – 0.39 | General engineering | Normalizing | Din / en equivalent |
| En8 | 0.35 – 0.45 | Engineering parts | Normalizing / q&t | Slightly higher carbon |
| Aisi 1035 | 0.32 – 0.38 | Machined components | Normalizing | American equivalent |
CK-35 is a versatile medium carbon steel suitable for a wide range of general engineering applications. With good mechanical properties, heat treatment flexibility, and economical pricing, it remains a practical choice for industrial use.