Bubuk aluminium murni

Gambaran Umum Bubuk Aluminium Murni

Serbuk aluminium murni mengandung 99% atau kandungan aluminium yang lebih tinggi. Ini memberikan kepadatan rendah yang dikombinasikan dengan keuletan, konduktivitas, dan ketahanan korosi yang baik.

Key properties and advantages of pure aluminum powder include:

Pure Aluminum Powder Properties and Characteristics

Properti	Detail
Komposisi	99% or higher Al content
Kepadatan	2,7 g/cc
Bentuk partikel	Bulat, tidak beraturan
Kisaran ukuran	1-150 mikron
Kepadatan yang tampak	Kepadatan sebenarnya hingga 50%
Konduktivitas	Konduktivitas listrik dan termal yang sangat baik
Ketahanan korosi	Good due to protective oxide layer

Pure aluminum powder is suitable for applications like thermite welding, diamond tools, conductive coatings, pyrotechnics, and metal injection molding.

Pure Aluminum Powder Composition

Typical composition of pure aluminum powder:

Pure Aluminum Powder Composition

Elemen	Berat %
Aluminium (Al)	99% min
Silikon (Si)	0,5% maks
Besi (Fe)	0,5% maks
Tembaga (Cu)	0,05% maks
Mangan (Mn)	0,05% maks
Magnesium (Mg)	0,05% maks
Kotoran lainnya	0,05% maks

• Aluminum provides low density, ductility and conductivity
• Impurity levels of other elements are carefully controlled
• High aluminum purity provides optimal electrical and thermal conductivity

The high aluminum content ensures excellent conductivity combined with good corrosion resistance and moderate strength.

Pure Aluminum Powder Physical Properties

Pure Aluminum Powder Physical Properties

Properti	Nilai-nilai
Kepadatan	2,7 g/cc
Titik leleh	660°C
Konduktivitas termal	237 W/mK
Resistivitas listrik	2.65 μΩ-cm
CTE	23.1 x 10^-6 /K
Reflectivity	87% at 400 nm wavelength

• Very low density compared to most metals
• High reflectivity and thermal conductivity
• Resistivitas listrik yang rendah memberikan konduktivitas yang tinggi
• CTE yang relatif tinggi memerlukan pertimbangan desain
• Maintains strength up to moderately high temperatures

The properties make pure aluminum suitable for lightweight applications needing electrical/thermal conductivity.

Pure Aluminum Powder Mechanical Properties

Pure Aluminum Powder Mechanical Properties

Properti	Nilai-nilai
Kekuatan tarik	90-100 MPa
Kekuatan luluh	35-45 MPa
Perpanjangan	35-40%
Kekerasan	25-35 HB
Kekuatan kelelahan	50-90 MPa
Kekuatan geser	60-65 MPa

• Relatively low tensile and yield strength
• Very high elongation provides excellent ductility
• Low hardness compared to most metals
• High fatigue strength suited for cyclic loading
• Properties can be enhanced through alloying additions

The properties make pure aluminum suitable for soft, ductile applications requiring conductivity and formability.

Pure Aluminum Powder Applications

Typical applications of pure aluminum powder include:

Pure Aluminum Powder Applications

Industri	Penggunaan
Thermite welding	Rail welding, metal joining
Manufaktur aditif	Low strength components
Explosives and pyrotechnics	Thermite compositions
Powder coatings	Conductive and resistant coatings
Alat-alat berlian	Metal matrix with diamond particles
Fireworks	Fuel and pyrotechnic compositions

Beberapa penggunaan produk tertentu:

• Thermite mixtures for in-situ metal joining and welding
• Low melting point casting alloys
• Electrically conductive coatings and RF shielding
• Aluminum-diamond tools for stone cutting
• Flash powder and pyrotechnic compositions
• Metal injection molding of non-structural parts

The ductility, conductivity and reactivity make pure aluminum suitable for these niche applications.

Pure Aluminum Powder Specifications

Key specifications for pure aluminum powder include:

Pure Aluminum Powder Specifications

Standar	Deskripsi
ASTM B787	Standard for pure aluminum powders
ASTM B859	Specs for aluminum and aluminum alloy powders
DIN 1718-1	Designation system for aluminum and aluminum alloys
GJB320B	Chinese military standard for aluminum and aluminum alloy powders

Ini menentukan:

• Minimum 99% aluminum content
• Limits on impurities like Fe, Si
• Powder characteristics like apparent density and particle size distribution
• Approved production methods like atomization
• Protokol pengambilan sampel dan pengujian

Meeting the standards ensures suitability for applications needing high purity aluminum powder.

Pure Aluminum Powder Particle Sizes

Pure Aluminum Powder Particle Size Distribution

Ukuran	Karakteristik
1-10 mikron	Ultrafine grade used in printing pastes
10-45 mikron	Fine grade suitable for coatings, pressing
45-150 mikron	Coarse grade offers better flowability

• Finer sizes provide a smooth finish and high reactivity
• Coarser powder has improved flow for automated processing
• Both spherical and irregular particle shapes are available
• Size distribution depends on targeted use

Controlling particle size distribution optimizes processing behavior, density, reactivity, and finish.

Pure Aluminum Powder Apparent Density

Pure Aluminum Powder Apparent Density

Kepadatan Nyata	Detail
Kepadatan sebenarnya hingga 50%	For irregular morphology powder
1.3-1.7 g/cc	Higher for spherical powder

• Spherical powder shape provides higher apparent density
• Irregular particles have lower density around 30-40%
• Higher density improves powder flow and compactibility
• Nilai hingga 60% dimungkinkan dengan bubuk bulat yang dioptimalkan

Kepadatan semu yang lebih tinggi menghasilkan produktivitas manufaktur dan kualitas komponen yang lebih baik.

Pure Aluminum Powder Production

Pure Aluminum Powder Production

Metode	Detail
Atomisasi	Molten aluminum stream broken into fine droplets that solidify into powder
Bola Milling	Mechanical milling classifies coarse powder into fine powder
Anil	Removes internal stresses and improves powder compressibility
Pengayakan	Mengklasifikasikan bubuk ke dalam fraksi ukuran yang berbeda

• Atomization allows large volume production with controlled particle sizes
• Milling provides lower cost size reduction of coarse powder
• Annealing and sieving provide customized powder sizes and shapes

Combination of methods produces high purity aluminum powder with application-specific characteristics.

Pure Aluminum Powder Pricing

Pure Aluminum Powder Pricing

Faktor	Dampak pada Harga
Kemurnian	Tingkat kemurnian yang lebih tinggi lebih mahal
Ukuran partikel	Bubuk ultrafine lebih mahal
Volume pesanan	Bulk orders get discounted pricing
Metode produksi	Complex methods increase cost
Pengemasan	Special packaging adds cost

Harga Indikatif

• Fine pure aluminum powder: $3-6 per kg
• Coarse pure aluminum powder: $2-4 per kg
• Large volume pricing can be up to 30% lower

Pricing depends on purity, particle size, order quantity, production method and customization requirements.

Pure Aluminum Powder Suppliers

Pure Aluminum Powder Suppliers

Perusahaan	Lokasi
Advanced Chemical Company	AMERIKA SERIKAT
Logam Mikron	AMERIKA SERIKAT
Baohua Metal Materials	Cina
Hengxing Metallurgical	Cina
Shanghai ShuiDing Powder Material	Cina
Reade Advanced Materials	AMERIKA SERIKAT

Faktor-faktor pemilihan pemasok:

• Purity levels and grades available
• Kapasitas produksi dan waktu tunggu
• Kisaran ukuran partikel rata-rata
• Customization of particle distribution
• Packaging options
• Pricing levels based on order quantities
• Compliance with international standards

Pure Aluminum Powder Handling and Storage

Pure Aluminum Powder Handling

Rekomendasi	Alasan
Use proper ventilation	Avoid concentrated dust environment
Employ grounding systems	Prevent static discharge during handling
Limit moisture exposure	Prevents oxidation of particles
Ikuti protokol yang aman	Mengurangi bahaya kesehatan dan kebakaran
Hindari sumber penyalaan	Flammable powder risk
Gunakan alat yang tidak menimbulkan percikan api	Mencegah kemungkinan penyalaan

Rekomendasi Penyimpanan

• Store in dry, inert sealed containers
• Maintain storage temperatures below 27°C
• Limit exposure to oxidizers like nitric acid

Proper precautions during handling and storage help preserve purity and prevent oxidation or ignition risks.

Pure Aluminum Powder Inspection and Testing

Pure Aluminum Powder Testing

Tes	Detail
Analisis kimia	XRF or ICP testing verifies composition
Distribusi ukuran partikel	Analisis difraksi laser
Kepadatan yang tampak	Uji flowmeter hall sesuai standar ASTM B212
Morfologi bubuk	Pencitraan SEM dari bentuk partikel
Analisis laju aliran	Laju aliran gravitasi melalui corong yang ditentukan
Pengukuran kelembaban	Kerugian pada uji pengeringan

Testing ensures the powder meets the required purity levels, particle characteristics, density specifications, morphology and flowability per applicable standards.

Pure Aluminum Powder Pros and Cons

Advantages of Pure Aluminum Powder

• Low density provides lightweight properties
• Konduktivitas listrik dan termal yang sangat baik
• Ketahanan korosi yang baik
• High ductility and excellent formability
• Dapat didaur ulang dan ramah lingkungan
• Cost-effective compared to other conductive powders

Limitations of Pure Aluminum Powder

• Low strength limits load bearing structural applications
• Moderate high temperature mechanical strength
• Requires protective coatings in corrosive environments
• Sensitive to contamination from moisture and other powders
• Pyrophoric nature requires careful handling
• Gradually oxidizes over time if uncoated

Comparison With Al-Mg Alloy Powder

Pure Al vs Al-Mg Alloy Powder

Parameter	Al murni	Al-Mg
Kepadatan	2,7 g/cc	2,7 g/cc
Kekuatan	90-100 MPa	150-220 MPa
Konduktivitas	Luar biasa	Bagus.
Ketahanan korosi	Bagus.	Luar biasa
Biaya	Rendah	Tinggi
Penggunaan	Thermite welding, pyrotechnics	Structural components

• Pure Al offers better conductivity and lower cost
• Al-Mg alloy provides higher strength
• Pure Al suited for electrical applications and pyrotechnics
• Al-Mg preferred for structural lightweight components

Pure Aluminum Powder FAQs

Q: What are the main applications of pure aluminum powder?

A: Main applications include thermite welding, conductive coatings, pyrotechnic compositions, diamond tools, metal injection molding of non-structural parts, and low-melting casting alloys.

Q: What precautions should be taken when working with pure aluminum powder?

A: Recommended precautions include proper ventilation, avoiding ignition sources, explosion-proof equipment, grounding systems, non-sparking tools, protective gear, safe protocols, and inert storage sealed away from contaminants.

Q: How does pure aluminum powder differ from aluminum alloy powders?

A: Pure aluminum has 99% or higher Al content while alloy powders contain other elements like magnesium, silicon, zinc. Pure Al offers high conductivity but lower strength than alloys.

Q: What affects the properties of pure aluminum powder components?

A: Key factors are apparent density, particle size distribution, compaction pressure, sintering parameters, impurities, and final part porosity.