Overview of Alumina Crucible

Alumina crucibles, made from aluminum oxide (Al₂O₃), are highly valued in laboratory and industrial settings for their exceptional thermal stability and chemical inertness. They are used in high-temperature applications such as melting and calcining materials, including metals, ceramics, and chemicals. Alumina crucibles come in various purities and shapes to meet specific needs, offering durability and resistance to thermal shock and corrosion.

Features of Alumina Crucible

High Thermal Stability: Can withstand extremely high temperatures without degrading.

Chemical Inertness: Resistant to most chemicals, making it suitable for a wide range of reactions.

Durability: Exceptional resistance to wear and mechanical stress.

Thermal Shock Resistance: Minimal risk of cracking or breaking under rapid temperature changes.

Corrosion Resistance: Withstands corrosive environments, extending its lifespan.

Purity Levels: Available in different purity levels to suit specific application requirements.

Variety of Shapes and Sizes: Customizable to fit various experimental and industrial needs.

(High Purity Cylindrical Or Conical Al2o3 Ceramic Corundum Alumina Crucible For Metal Melting In Laboratory)

Specifications of High Purity Cylindrical Or Conical Al2o3 Ceramic Corundum Alumina Crucible For Metal Melting In Laboratory

High purity cylindrical and cone-shaped Al ₂ O ₃ ceramic corundum alumina crucibles are engineered for requiring laboratory applications, especially metal melting, using remarkable thermal security, chemical resistance, and durability. These crucibles are made up of 99% or higher purity light weight aluminum oxide (Al ₂ O ₃), making certain very little contamination throughout high-temperature procedures. Offered in both cylindrical and conelike layouts, they accommodate varied speculative requirements. Round crucibles supply uniform warm circulation, ideal for consistent melting, while conical variations promote easy putting of molten steels because of their tapered shape.

The crucibles exhibit exceptional thermal efficiency, standing up to temperatures approximately 1750 ° C( 3182 ° F)in constant use and temporary tops approximately 1800 ° C(3272 ° F). Their low thermal development coefficient and high thermal shock resistance permit fast home heating or air conditioning without breaking. Criterion dimensions range from 10 mL to 500 mL capacities, with external diameters in between 20 mm to 100 mm and heights of 30 mm to 150 mm. Wall surface thickness typically extends 3– 5 mm, balancing architectural honesty and heat transfer effectiveness. The smooth, non-porous surface coating decreases product adhesion and makes sure simple cleaning.

These alumina crucibles are chemically inert, withstanding rust from acids, antacid, and molten metals like gold, silver, platinum, and their alloys. They are commonly used in laboratory settings for metal casting, ash evaluation, sample preparation, and high-temperature sintering. Manufactured via isostatic pushing and sintered at ultra-high temperature levels, the crucibles achieve high density (≥ 3.9 g/cm ³) and mechanical toughness, ensuring longevity even under duplicated thermal cycling.

Created for compatibility with electrical furnaces, induction heating systems, and gas lanterns, they meet strict lab security and precision criteria. Their durable construction decreases the threat of breakage, while the high-purity composition warranties reliable results in delicate applications. Offered in standard sizes or personalized measurements, these crucibles are a crucial device for metallurgy, chemistry, and products science study, supplying unmatched efficiency in severe settings.

(High Purity Cylindrical Or Conical Al2o3 Ceramic Corundum Alumina Crucible For Metal Melting In Laboratory)

Applications of High Purity Cylindrical Or Conical Al2o3 Ceramic Corundum Alumina Crucible For Metal Melting In Laboratory

High purity cylindrical or conical Al ₂ O ₃ ceramic corundum alumina crucibles are important devices for precision steel melting in lab setups. Crafted from 99.6% or greater purity alumina, these crucibles master extreme environments because of their outstanding thermal stability, chemical inertness, and mechanical toughness. They stand up to temperature levels as much as 1800 ° C, making them excellent for thawing high-melting-point steels like platinum, gold, silver, and alloys, while standing up to thermal shock during fast home heating or cooling down cycles. Their non-reactive nature guarantees minimal contamination, critical for analytical precision in study, quality assurance, and product synthesis.

These crucibles are widely used in metallurgical laboratories, colleges, and commercial R&D facilities for applications such as alloy development, example prep work for spectroscopy (e.g., XRF analysis), and warmth treatment procedures. The cylindrical layout provides stability and consistent warm distribution for consistent melting, while conelike forms facilitate exact pouring of liquified metals, decreasing waste. Available in multiple sizes, they suit small-scale experiments or larger sets without jeopardizing performance.

Unlike graphite or metallic options, alumina crucibles eliminate risks of carbon contamination or oxidation, making sure purity in sensitive processes like semiconductor construction or rare-earth element refining. Their dense structure withstands deterioration from acidic or standard changes, prolonging service life also under repeated use. Laboratories gain from their sturdiness, minimizing replacement costs and downtime.

Compatible with induction furnaces, resistance heating units, and muffle heaters, these crucibles incorporate seamlessly into diverse configurations. Their smooth surface lessens slag adherence, streamlining cleaning and reuse. Whether for producing customized alloys, evaluating steel structures, or carrying out high-temperature sintering, high-purity alumina crucibles deliver dependability, safety, and precision. By integrating innovative material properties with functional styles, they stay essential for advancing scientific development and industrial applications calling for uncompromised product honesty.

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 High Purity Cylindrical Or Conical Al2o3 Ceramic Corundum Alumina Crucible For Metal Melting In Laboratory

What is the maximum temperature tolerance of high-purity Al₂O₃ ceramic crucibles?
High-purity alumina (Al₂O₃) crucibles typically withstand temperatures up to **1800°C (3272°F)** in continuous use, with short-term peaks slightly higher. Their exceptional thermal stability comes from 99%+ purity alumina, which minimizes impurities that could weaken structural integrity. Always verify the manufacturer’s specifications, as exact limits depend on wall thickness, geometry, and application conditions like heating rate or atmosphere.

What are the advantages of cylindrical vs. conical shapes?
**Cylindrical crucibles** offer uniform heat distribution and higher capacity, ideal for melting larger metal batches. **Conical crucibles** simplify precise pouring of small quantities, reduce slag contamination via tapered spouts, and enhance stability during tilting. Choose based on your lab’s workflow: cylindrical for bulk melting, conical for controlled transfers in experiments requiring accuracy.

Are these crucibles compatible with all metals?
Al₂O₃ crucibles work well with noble metals (gold, silver, platinum) and non-reactive alloys. Avoid reactive metals like titanium, zirconium, or molten alkali metals (e.g., sodium), which can corrode alumina at high temperatures. For reactive materials, consider alternative materials like zirconia or boron nitride. Always check chemical compatibility charts for your specific metal.

How should I handle and clean alumina crucibles?
Preheat gradually (100–200°C/hour) to avoid thermal shock. After use, cool slowly inside the furnace. Clean residues with diluted hydrochloric acid (for basic slags) or nitric acid (for organic residues), then rinse with distilled water. Avoid abrasive tools—use soft brushes. Inspect for cracks or erosion before reuse to ensure safety and performance.

What is the typical lifespan of these crucibles?
Lifespan varies with usage frequency, temperatures, and metals melted. With proper care—avoiding thermal shocks, mechanical impacts, and corrosive materials—a crucible can last dozens of cycles. Signs of replacement include visible cracks, thinning walls, or surface pitting. Store in a dry environment to prevent moisture absorption, which can weaken the structure during heating.

(High Purity Cylindrical Or Conical Al2o3 Ceramic Corundum Alumina Crucible For Metal Melting In Laboratory)