Refractory Cylindrical MGO Magnesia Ceramic Melting Crucible

• Customization: Available
• Application: Refractory, Refractory
• Color: Ivory
• Model NO.: HBF-M001
• Material: Magnesia
• Shape: Cylindrical
• Name: Refractory Magnesium MGO Ceramic Crucible
• Name 1: Magnesium MGO
• Name 2: MGO Crucible
• Certification: RoHS, ISO 9001
• Size: as Per Drawing
• Standard: Yes
• Surface: Smooth
• Mold: Yes
• Drawing: Need
• Type: Ceramic Crucible
• Transport Package: Export Carton
• Specification: customized
• Trademark: HIGHBORN
• Origin: Jiangsu, China
• Production Capacity: 1000PCS Per Month
• Package Size: 15.00cm * 25.00cm * 15.00cm
• Package Gross Weight: 2.000kg

Product Description

Product Description

High Purity Magnesium Oxide Crucible

High Purity 99.5% MgO Magnesia Ceramic Crucible | Refractory for Gold/Platinum Melting,high-purity magnesium oxide (MgO) ceramic crucible is manufactured from premium fused magnesia raw materials through high-temperature sintering and precision forming. It features excellent high-temperature resistance, outstanding chemical stability, low thermal expansion, and strong thermal shock resistance, making it ideal for high-temperature melting, calcination, sintering, and material synthesis in laboratories, metallurgy, electronics, and new energy industries.

High Density MgO Crucible,Low Thermal Expansion Crucible

Q1:What is the maximum operating temperature of your MgO crucible? 
A: Our standard 99.5% MgO crucible can withstand up to 2400℃, and the 99.9% ultra-high purity grade can reach 2800℃ (theoretical melting point of MgO is 2852℃).

 It is suitable for high-temperature melting of precious metals, alloys, and special materials

Q2:Why choose MgO crucible over alumina (Al2O3 crucible? 

A: MgO crucible has higher chemical inertness (no reaction with alkaline melts and precious metals), higher temperature resistance (2400℃ vs 1700℃ for AL2O3), and better resistance to basic slag corrosion.

It is the preferred choice for melting gold, platinum, and high-temperature alloys

Custom Size MgO Crucible,OEM MgO Crucible

Q3:How about the thermal shock resistance? Will it crack during rapid heating/cooling? 

A: Our MgO crucible has a low thermal expansion coefficient (13.0–13.5×10-6/℃) and excellent thermal shock resistance. It can withstand rapid temperature changes (from room temperature to 2000℃ in 30 minutes) without cracking or deformation, ensuring stable performance in harsh thermal environments

Q4:How many times can the MgO crucible be reused? 

A: Under normal operating conditions (proper heating/cooling, no mechanical damage), our high-density MgO crucible can be reused 50–100 times for melting cycles, significantly reducing your replacement cost compared to ordinary ceramic cruciblesAlibaba.co...

Technical Specifications

(Custom configurations available upon request.)

Item	Unit	Data
Content	%	99.8
Density	g/cm3	3.56
Hardness	Mohs'	6
Liner Thermal Expansion	/oC (40o to 250o)	8.6x10-6
Work Temperature	oC	2400
Flexual Strength	MPa	84
Compressure Strength	MPa	14
Fracture Strength (5 distance)	MPa	125
Thermal Conductivity	W/m.k	15.9-42
Volume Resistivity(100oC)		>1012
Dielectric Constant 1.0MHz	----	5.8

You May Like

Strict Quality System & Digital Certification

Strict Full-process QC & Complete Verified Certifications

We adopt standardized ISO 9001:2015 and IATF 16949 quality management systems with full-process inspection from raw materials incoming, production processing to finished product delivery. We have obtained a full range of international certifications including RoHS, CE, EMC, LVD, FDA, MSDS, SGS and TUV, and own 8 registered trademarks and 40 technical patents as our core intellectual property.

ISO9001:2015 Quality Management System

CE Certification — European Safety Standard

RoHS Certification — EU Restriction of Hazardous Substances Standard

Period of validity:
from2024.10.17 to 2027.10.25
Full-process standardized production quality control system.

Certificate No. CTA-01-2005-008
 (Original certificate available)
Complies with EU mandatory safety, health and environmental protection standards.

Certificate No. LTR20260427010
Date:MAY .08.2026

Packaging & Shipping

Reliable Fragile Product Packaging & Comprehensive Shipping Protection

Targeting the fragile, high-precision characteristics of industrial ceramic and quartz products, we adopt standardized export-grade shockproof packaging and professional global transportation solutions. Finished products go through independent wrapping, anti-collision foam filling and thickened carton or wooden box reinforcement, greatly reducing the risk of breakage, scratch and deformation during transit. We support customized brand packaging, exclusive shipping marks and standardized export packaging standards, and adapt to multiple transportation modes including sea freight, air freight and international express. With mature logistics docking experience and full-link cargo protection measures, we aim to improve the safety and integrity of product delivery for global industrial customers.

R&D Strength & Mature Project Experience

Independent R&D Innovation + Verified Similar Overseas Project Cases

We have independent professional R&D teams and laboratories capable of continuous innovation, structural optimization and process improvement, to develop customized products tailored to international market needs. Our products are exported to more than 130 countries, and we have established cooperative partnerships with over 100 well-known domestic and foreign universities. We have also maintained successful cooperation with Fortune 500 enterprises.
We boast extensive overseas project experience and have long provided services to worldwide clients covering similar target markets, customer groups and product specifications. Our well-established, replicable project cases comply with major international standards.

Stable Capacity & Fair Pricing

Sufficient & Stable Output Capacity + Standardized              Market-oriented Quotation

Equipped with modern standardized workshops and automatic production equipment, we maintain stable daily, monthly and annual output, capable of handling large-batch, continuous and urgent global orders. We offer transparent, standardized and efficient quotations aligned with prevailing average global market prices. Factory direct sales deliver favorable cost performance with regulated pricing, facilitating long-term stable cooperation on bulk orders.

Full-Cycle Service & Long-Term Trusted Partner

One-stop Full-lifecycle Export Service + Sustainable & Stable Enterprise Operation

As an established, stable export manufacturer with comprehensive enterprise qualifications and worldwide market recognition, we are not makeshift processing workshops and able to deliver sustainable, steady product supply and technical support. We offer one-stop full-lifecycle export services covering pre-sales customization, order progress tracking and professional after-sales maintenance and warranty. Our responsive multilingual service team strives to deliver seamless cooperation with clients.

FAQ

Q1: Can you provide exclusive customized solutions for special project demands? 
A1: Yes. In addition to conventional OEM and ODM customization, we can develop exclusive product structures, adjust technical parameters and optimize solutions according to special project standards, regional industry specifications and personalized buyer requirements, providing one-to-one customized technical support.
 
Q2: Do you support third-party factory inspection and product random testing? 
A2: We support on-site factory audit and offline random inspection by buyers or authoritative third-party institutions. Our standardized production process, complete quality records and standardized management system can comply with mainstream international factory inspection standards.
 
Q3: How do you ensure on-time delivery for bulk orders? 
A3: We have a scientific production scheduling system and sufficient material reserve chain. According to order quantity and delivery cycle, we will formulate a detailed production plan, arrange special personnel to track progress in real time, and effectively avoid delivery delays to ensure stable and punctual shipment of bulk and urgent orders.
 
Q4: Why is your factory price more stable than trading companies? 
A4: As a direct manufacturer, we control all links from raw material procurement, production processing to finished product output. There is no intermediate markup, and we can adjust costs according to long-term cooperative orders, maintaining stable and transparent pricing for long-term strategic partners.
 
Q5: What customized service items can you support besides product structure? 
A5: Besides structural size and precision tolerance customization of industrial ceramic and quartz products, we support personalized services including custom deep processing, surface treatment, laser marking, custom packaging and technical document customization to meet different industrial and brand standards.