Overview of Mullite Crucible

Mullite crucibles are made from a high-performance ceramic material composed primarily of alumina (Al₂O₃) and silica (SiO₂). Known for their excellent thermal stability and mechanical strength, mullite crucibles are widely used in high-temperature applications such as melting metals, glass, and ceramics. They offer superior resistance to thermal shock and chemical attack, making them indispensable in both laboratory and industrial settings.

Features of Mullite Crucible

Thermal Shock Resistance: Exceptional ability to withstand rapid temperature changes without cracking.
High Mechanical Strength: Strong and durable, even at elevated temperatures.
Chemical Stability: Resistant to most chemicals, ensuring minimal contamination during processes.
Temperature Range: Can operate effectively at temperatures up to 1650°C.
Low Thermal Expansion: Minimal expansion or contraction with temperature changes, ensuring dimensional stability.
Non-Reactive: Does not react with the materials being processed, preserving sample purity.
Versatility: Suitable for a wide range of applications including metallurgy, glass manufacturing, and laboratory experiments.

(Corundum crucible 95% 99% Alumina Precision Ceramic Corundum-mullite Alumina Crucible For Melting Steel)

Specifications of Corundum crucible 95% 99% Alumina Precision Ceramic Corundum-mullite Alumina Crucible For Melting Steel

The Corundum Crucible, available in 95% and 99% alumina grades, is a high-performance accuracy ceramic product designed for extreme-temperature applications such as melting steel, precious metals, glass, and industrial ceramics. Crafted from costs alumina (Al ₂ O ₃) and advanced sintering methods, these crucibles integrate toughness, thermal stability, and chemical resistance for demanding laboratory and commercial environments.

** Material Structure **: The 95% alumina crucible incorporates a corundum-mullite compound, blending alumina with silica to enhance thermal shock resistance. The 99% alumina variation is a pure corundum ceramic, taking full advantage of temperature level tolerance and chemical inertness. Both qualities feature thick, non-porous frameworks to stop contamination.

** Temperature level Resistance **: The 95% alumina crucible stands up to continuous consume to 1650 ° C(3002 ° F), suitable for applications needing quick heating/cooling cycles. The 99% alumina version operates approximately 1800 ° C(3272 ° F), matched for ultra-high-temperature procedures like steel melting or sophisticated alloy manufacturing.

** Thermal Shock Resistance **: The 95% grade masters environments with sudden temperature level changes as a result of mullite’s reduced thermal expansion, reducing crack risks. The 99% variant, while somewhat less shock-resistant, maintains stability under sustained high warmth.

** Chemical Security **: Both crucibles resist corrosion from acids, alkalis, and molten metals. The 99% alumina supplies remarkable resistance to hostile slags and oxidizers, making certain longevity in rough metallurgical procedures.

** Mechanical Strength **: High solidity (Mohs 9) and compressive strength (≥ 2000 MPa) decrease wear, contortion, and splitting under mechanical anxiety. The 99% grade gives improved structural stability for heavy-load applications.

** Accuracy Design **: Engineered for dimensional accuracy, these crucibles feature smooth surfaces to lower material attachment and make certain consistent outcomes. Criterion dimensions range from 10 mL to 20 L, with custom-made shapes (cylindrical, conelike, tapered) offered.

** Applications **: Commonly made use of in steel shops, rare-earth element refining, semiconductor processing, and research study labs. The 95% crucible is cost-effective for general-purpose usage, while the 99% variation is optimal for extreme pureness and temperature demands.

** Modification **: Tailored choices include lids, takes care of, and specialized layers. Both grades are recyclable, using lasting price effectiveness. Pick 95% alumina for thermal cycling resilience or 99% alumina for maximum warm resistance and chemical pureness.

(Corundum crucible 95% 99% Alumina Precision Ceramic Corundum-mullite Alumina Crucible For Melting Steel)

Applications of Corundum crucible 95% 99% Alumina Precision Ceramic Corundum-mullite Alumina Crucible For Melting Steel

Corundum crucibles, offered in 95% and 99% alumina structures, are precision-engineered ceramic vessels developed for high-temperature applications, especially in melting metals such as steel. These crucibles are crafted from innovative alumina-based ceramics, incorporating diamond (alpha-alumina) and mullite phases to enhance thermal stability, mechanical stamina, and resistance to chemical disintegration. The 95% alumina alternative deals a cost-effective option for general-purpose usage, while the 99% alumina crucible delivers superior pureness and performance for requiring industrial procedures. Both kinds excel in severe environments, enduring temperature levels as much as 1700 ° C (3092 ° F) and quick thermal biking without cracking or deformation. Their reduced thermal growth coefficient ensures very little dimensional changes under warm stress and anxiety, making them ideal for accuracy melting applications. In steel shops, these crucibles are extensively made use of for melting, spreading, and alloying state-of-the-art steels, stainless-steels, and specialized alloys as a result of their extraordinary resistance to molten steel rust and slag responses. The non-reactive nature of alumina protects against contamination of the melt, guaranteeing regular steel high quality. Past steel, they are employed in handling non-ferrous steels, precious metals, and semiconductors. The corundum-mullite framework boosts thermal shock resistance, allowing repeated heating and cooling down cycles in induction heating systems, electric arc heating systems, or gas-fired configurations. Their smooth interior surface decreases metal adherence, streamlining post-use cleaning. Applications include laboratories, fashion jewelry manufacturing, and aerospace industries, where accuracy and dependability are crucial. The high-density alumina ceramic building and construction makes certain longevity, reducing downtime and replacement prices. Readily available in custom-made shapes and sizes, these crucibles are compatible with automated systems, sustaining high-volume manufacturing. Key advantages include energy performance due to exceptional thermal retention, minimized steel loss, and compatibility with hostile changes. For markets calling for sturdy, high-performance melting remedies, 95% and 99% alumina diamond crucibles represent a robust selection, stabilizing performance, toughness, and cost-effectiveness.

Company Introduction

Welcome to Teen-Hot,a leading global supplier of high-quality crucibles designed for various industrial applications. We offer an extensive range of crucibles, including graphite, ceramic, and metal varieties, tailored to meet the needs of foundries, laboratories, and manufacturers. Our products are renowned for their durability, thermal resistance, and precision engineering, ensuring optimal performance in melting and heat treatment processes. With advanced manufacturing facilities and a commitment to excellence, we provide reliable, cost-effective solutions worldwide. Partner with us for your crucible needs and experience superior quality, expert support, and timely delivery.

If you have any questions, please feel free to contact us(nanotrun@yahoo.com).

Payment Methods

T/T, Western Union, Paypal, Credit Card etc.

Shipment Methods

By air, by sea, by express, as customers request.

5 FAQs of Corundum crucible 95% 99% Alumina Precision Ceramic Corundum-mullite Alumina Crucible For Melting Steel

What is a Corundum Crucible, and how do 95% and 99% Alumina versions differ? A Corundum Crucible is a high-purity ceramic container made primarily from alumina (Al₂O₃), designed for extreme-temperature applications like melting metals. The 95% alumina crucible contains 95% Al₂O₃ blended with additives like mullite (aluminum silicate) to enhance thermal shock resistance, making it ideal for rapid heating/cooling cycles. The 99% alumina version is purer, offering superior high-temperature resistance (up to 1800°C) and chemical stability, suited for prolonged use in harsh environments.

What temperature can these crucibles withstand? The 95% alumina crucible typically handles temperatures up to 1650°C, while the 99% alumina variant withstands up to 1800°C. Both are engineered for melting steel, which requires sustained exposure to 1500–1600°C. The corundum-mullite composite in the 95% version improves thermal shock resistance, reducing cracking risks during rapid temperature shifts.

Why choose alumina crucibles over graphite or clay alternatives? Alumina crucibles outperform graphite (which oxidizes at high heat) and clay (lower melting points) due to their exceptional thermal stability, chemical inertness, and resistance to slag or flux corrosion. They last longer, reduce contamination risks, and maintain structural integrity even under repeated thermal stress, offering better cost efficiency over time.

What applications are these crucibles best suited for? Primarily used for melting steel, these crucibles are also ideal for processing non-ferrous metals (gold, silver, aluminum), alloys, and glass. They’re widely used in labs, foundries, and jewelry-making due to their precision, durability, and ability to handle aggressive melts without degrading.

How do I extend the lifespan of an alumina crucible? Avoid abrupt temperature changes—preheat gradually and cool slowly. Use compatible tools to prevent physical damage. Clean residues after each use to avoid chemical buildup. Store in a dry environment to prevent moisture absorption. With proper care, 99% alumina crucibles can last significantly longer, even under frequent high-temperature use. The 95% version offers a balance of longevity and affordability for less extreme conditions.

(Corundum crucible 95% 99% Alumina Precision Ceramic Corundum-mullite Alumina Crucible For Melting Steel)