we manufacture forging ingots, billets, and blooms in carbon steel specifically for En15A, as listed under carbon manganese steel in the ksl steel grades family. En15A is a medium carbon steel designed to offer consistent mechanical properties, good toughness, and excellent machinability. It is widely used in general engineering and automotive applications where uniform performance, good surface finish, and reliable machining characteristics are required. En15A is a refined variant of En15 with tighter control on chemical composition, making it particularly suitable for machined and forged components that require dimensional accuracy and consistent quality.
| Element | Content (%) | Function / effect |
| Carbon (c) | 0.30 – 0.40 | Provides strength and hardness |
| Manganese (mn) | 0.60 – 0.90 | Improves toughness and hardenability |
| Silicon (si) | 0.10 – 0.35 | Increases strength and elasticity |
| Phosphorus (p) | Max 0.035 | Impurity; controlled for better toughness |
| Sulphur (s) | Max 0.035 | Impurity; controlled for machinability |
| Iron (fe) | Balance | Base metal |
Heat treatment parameters can be adjusted based on application requirements.
En15A is commonly referenced as:
En15A provides improved consistency and machinability compared to standard En15, making it ideal for machined and forged components where dimensional accuracy and reliable performance are critical. Its cost-effective nature and flexible heat treatment options make it a practical choice for a wide range of industrial applications.
| Grade | Carbon (%) | Key applications | Heat treatment | Comments |
| En15A | 0.30–0.40 | Machined components | Normalizing / q&t | Consistent quality |
| En15 | 0.30–0.40 | General engineering | Normalizing | Standard version |
| 27Mn2 | 0.24–0.30 | Forgings, shafts | Normalizing | Higher mn |
| SAE 1541 | 0.36–0.44 | Fasteners | Cold heading | High-mn steel |
En15A is a refined medium carbon steel listed in the ksl steel grades family, offering good strength, toughness, and machinability. It is well-suited for general engineering and automotive applications requiring consistent quality and performance.