Description

Strontium Ferrite CAS NO 12023-91-5 is a permanent magnetic ceramic material composed of strontium oxide and iron(III) oxide. It is valued for its high coercivity, excellent chemical stability, and cost-effectiveness compared to rare-earth magnets. This material is essential for manufacturers in the electronics, automotive, and industrial equipment sectors requiring reliable, hard ferrite components.

Application

• Permanent Magnets: Core material for manufacturing sintered and bonded ferrite magnets used in motors, speakers, and sensors.
• Electromagnetic Components: Key ingredient in the production of inductor cores, microwave ferrites, and magnetic recording media.
• Automotive Industry: Used in various motor applications, including starter motors, windshield wiper motors, and electric power steering systems.
• Consumer Electronics: Found in loudspeakers, microphones, and small DC motors for household appliances and personal devices.
• Industrial Equipment: Integral to the magnets used in separators, magnetic chucks, and lifting systems.
• Security and Authentication: Used in magnetic stripes for cards and security tags.

Basic Information

Product Name	Strontium Ferrite
CAS No.	12023-91-5
Molecular Formula	SrO·6Fe₂O₃ or SrFe₁₂O₁₉
Molecular Weight	1061.77 g/mol (for SrFe₁₂O₁₉)
Synonyms	Strontium Hexaferrite; Strontium Iron Oxide; Ferroxdure; Hard Ferrite; Permanent Ferrite; SrFe12O19; Strontium Monoferrite; Magnetic Ceramic Oxide
EINECS	234-685-0

Quality Control

Our Strontium Ferrite is manufactured under stringent process controls to ensure batch-to-batch consistency and performance reliability. Quality is verified through comprehensive testing of magnetic properties (coercivity, remanence), phase purity (XRD), and particle size distribution. A Certificate of Analysis (COA) detailing lot-specific results is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong magnetic fields and sources of ignition. The material is moisture-sensitive (hygroscopic); ensure containers are sealed after use to prevent caking or degradation.

Specification

Item	Specification
Appearance	Brown to black powder
Identification (XRD)	Complies (M-type hexaferrite phase)
Assay (SrFe₁₂O₁₉)	≥ 96.0 %
Coercivity (HcJ)	Contact for details
Remanence (Br)	Contact for details
Particle Size (D50)	0.8 - 1.5 µm
Loss on Ignition	≤ 1.0 %

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.