The material of the product

The standard materials for Hirth Coupling are SCM415 (15CrMo) and SCM440 (42CrMo), which can generally be specified by customers unless there are specific material requirements in the product design.

SCM415 (15CrMo) is a low-carbon alloy structural steel classified under the green-cross steel category. It is suitable for carburizing heat treatment to improve surface hardness and wear resistance while maintaining toughness in the core. It is commonly used in various special wear-resistant and load-bearing components such as spindles, motor shafts, mechanical parts, and gears.

SCM440 (42CrMo) is a high-toughness alloy structural steel (medium carbon chromium-molybdenum alloy steel), also known as red-cross steel. It contains chromium (Cr) and molybdenum (Mo) elements and has the advantages of stable composition, low harmful elements, high steel purity, small decarburized layer, and few surface defects. It can undergo tempering heat treatment and high-frequency surface hardening treatment for wear resistance. It is widely used in bolts, shafts, rods, guide pillars, spindle sleeves, gears, and components of engines and machinery that require toughness.