Hot forging is the process of heating steel raw material to a high temperature (typically 1,100–1,250 °C) and shaping it between dies. This method is far more suitable than cold forming, especially for large-diameter bolts of M20 and above.
Advantages of Hot Forging
As the heated material takes shape in the die, the grain flow of the steel follows the geometry of the part. This preserves continuity at head-to-shank transition zones, giving the bolt high resistance to impact and variable loads.
Hot forging is also a flexible production method: geometries that are difficult to cold-form — eyebolts, T-head bolts, hook-shaped special parts — can be produced economically by hot forging.
Application Areas
Hot forged bolts are widely used in steel construction, bridge and infrastructure projects, power plants, mining equipment, agricultural machinery and heavy machinery manufacturing. They are indispensable at connection points requiring high strength grades (8.8, 10.9).
At our facility in Konya, Şahi Cıvata manufactures standard and custom-sized hot forged bolts from M3 to M48, to DIN, ISO, EN and ASTM standards.