DT4C Electrical Pure Iron Heat Treatment for High-Performance Soft Magnetic Applications

Normantherm
December 17, 2025

 

DT4C pure iron requires a specialized heat treatment process focused on stress relief, coercivity reduction and complete demagnetization.


Controlled Heat Treatment for Improved Magnetic Properties


DT4C heat treatment is performed in a vacuum or hydrogen atmosphere to prevent oxidation and surface contamination. During heating, internal stresses caused by wire drawing, machining, or forming are effectively removed. This allows the crystal grain structure to stabilize, resulting in:
Lower coercivity
Higher magnetic permeability
Reduced magnetic energy loss
Stable magnetization and demagnetization behavior


Demagnetization for Consistent Magnetic Response


After heat treatment, DT4C electric pure iron undergoes a final demagnetization process to eliminate residual magnetic fields. This ensures fast and accurate response to changing magnetic signals, which is critical for high-precision electromagnetic applications.


By combining controlled atmosphere heat treatment with effective demagnetization, DT4C electric pure iron delivers excellent soft magnetic performance, long service life, and high reliability for demanding industrial and electronic applications.