• Mar 22, 2026 Metric Spline Shafts Din 5462 teels (e.g., 42CrMo4, 40Cr): Favored for their strength, toughness, and 1. hardenability, offering excellent fatigue resistance. Case-Hardened Steels: Surface hardening treatments such as carburizing or 2. nitriding improve wear resistance while maintaining a tough By Lynne Russel
