In the global refractory and high-temperature materials market, magnesia crucibles—also known as MgO crucibles—play a vital role in high-purity melting, alloy production, and vacuum induction processes.
As industries such as aerospace, energy, metallurgy, and advanced ceramics continue to demand higher purity and performance, Weiert Ceramics is a leading manufacturer and source factory of high purity magnesia crucibles in China.

About Weiert Ceramics

Weiert Ceramics is a professional MgO crucible manufacturer and supplier with more than a decade of experience in high-temperature ceramic engineering.

Our company integrates R&D, production, and technical support, offering OEM and custom-made high-purity magnesia crucibles to customers worldwide.

Weiert Ceramics operates its own source factory in mainland China, equipped with advanced forming, sintering, and quality-testing facilities.

This ensures full control over every production stage—from raw-material purification to final inspection—providing reliable quality and competitive factory-direct pricing.

Why Choose Our Magnesia (MgO) Crucibles

Our high-purity MgO crucibles are widely used in:

• Vacuum induction melting (VIM) of nickel-based and cobalt-based superalloys;
• Precious-metal refining, including platinum, palladium, and iridium;
• Laboratory and industrial high-temperature sintering of rare-earth oxides, lithium-battery cathode materials, and special alloys.

Key performance features:

• Purity ≥ 99.7 % MgO;
• Excellent corrosion resistance to metal oxides and alkaline slags;
• High density and thermal stability;
• Minimal reaction with molten alloys and slags.

These properties make Weiert Ceramics’ MgO crucibles ideal for industries that require clean, stable containers under extreme temperature and vacuum conditions.

Manufacturing Strength

As a China-based magnesia crucible factory, Weiert Ceramics adopts Cold Isostatic Pressing (CIP) to achieve uniform density and precision forming.
Through controlled sintering and electrofused recrystallisation, each crucible exhibits low porosity, high mechanical strength, and outstanding resistance to thermal shock.
Our technical team continuously improves material formulations based on the latest research in MgO ceramics and spinel systems, ensuring every batch meets international standards.

Supply & Service

As a trusted Chinese supplier, we provide:

• Flexible OEM/ODM services;
• Quick production lead times;
• Stable quality with batch traceability;

Commitment to Quality

Weiert Ceramics strictly controls raw-material sources, using high-purity fused magnesia and realible testing equipment, ensuring consistency from lab-scale testing to mass production.

Contact the Leading Magnesia Crucible Supplier

Whether you are looking for high-purity MgO crucibles, custom refractory ceramics, or a reliable Chinese manufacturer, Weiert Ceramics is your best choice.
Contact us today for specifications, samples.