純アルミニウム粉

純アルミニウムパウダーの概要

純アルミニウム粉末には99%以上のアルミニウム含有量が含まれています。低密度でありながら、優れた延性、導電性、耐食性を備えています。

Key properties and advantages of pure aluminum powder include:

Pure Aluminum Powder Properties and Characteristics

プロパティ	詳細
構成	99% or higher Al content
密度	2.7 g/cc
粒子形状	球形、不規則
サイズ範囲	1～150ミクロン
見かけ密度	最大 50% の真密度
導電率	Excellent electrical and thermal conductivity
耐食性	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

エレメント	重量 %
アルミニウム（Al）	99%分
ケイ素 (Si)	最大0.5%
鉄（Fe）	最大0.5%
銅（Cu）	0.05%最大
マンガン (Mn)	0.05%最大
マグネシウム (Mg)	0.05%最大
その他の不純物	0.05%最大

• 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

プロパティ	価値観
密度	2.7 g/cc
融点	660°C
熱伝導率	237 W/mK
電気抵抗率	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
• Low electrical resistivity provides high conductivity
• CTEが比較的高いため、設計上の配慮が必要
• 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

プロパティ	価値観
引張強さ	90-100 MPa
降伏強度	35-45 MPa
伸び	35-40%
硬度	25-35 HB
疲労強度	50-90 MPa
せん断強度	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

産業	用途
Thermite welding	Rail welding, metal joining
積層造形	Low strength components
Explosives and pyrotechnics	Thermite compositions
Powder coatings	Conductive and resistant coatings
Diamond tools	Metal matrix with diamond particles
花火	Fuel and pyrotechnic compositions

いくつかの具体的な製品の用途

• 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

スタンダード	説明
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

これらを定義する：

• Minimum 99% aluminum content
• Limits on impurities like Fe, Si
• Powder characteristics like apparent density and particle size distribution
• Approved production methods like atomization
• Sampling and testing protocols

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

Pure Aluminum Powder Particle Sizes

Pure Aluminum Powder Particle Size Distribution

サイズ	特徴
1～10ミクロン	Ultrafine grade used in printing pastes
10～45ミクロン	Fine grade suitable for coatings, pressing
45～150ミクロン	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

見かけ密度	詳細
最大 50% の真密度	不規則な形状の粉末用
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
• 最適化された球状粉末により60%まで可能

見かけの密度が高いほど、製造の生産性と部品の品質が向上します。

Pure Aluminum Powder Production

Pure Aluminum Powder Production

方法	詳細
霧化	Molten aluminum stream broken into fine droplets that solidify into powder
Ball milling	Mechanical milling classifies coarse powder into fine powder
アニーリング	Removes internal stresses and improves powder compressibility
ふるい分け	粉体を粒度別に分級

• 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

ファクター	価格への影響
純度	高純度グレードはより高価
粒子径	超微粒子粉末は高価です
注文量	Bulk orders get discounted pricing
製造方法	複雑な方法はコストを増加させる
パッケージング	Special packaging adds cost

参考価格

• 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

会社概要	所在地
Advanced Chemical Company	アメリカ
ミクロン金属	アメリカ
Baohua Metal Materials	中国
Hengxing Metallurgical	中国
Shanghai ShuiDing Powder Material	中国
リード・アドバンスト・マテリアルズ	アメリカ

サプライヤーの選択要素：

• Purity levels and grades available
• 生産能力とリードタイム
• Average particle size ranges
• Customization of particle distribution
• 梱包オプション
• Pricing levels based on order quantities
• Compliance with international standards

Pure Aluminum Powder Handling and Storage

Pure Aluminum Powder Handling

推薦	理由
Use proper ventilation	Avoid concentrated dust environment
Employ grounding systems	Prevent static discharge during handling
Limit moisture exposure	Prevents oxidation of particles
安全なプロトコルに従う	健康と火災の危険を減らす
発火源を避ける	Flammable powder risk
火花の出ない工具を使用する	発火の可能性を防ぐ

ストレージに関する推奨事項

• 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

テスト	詳細
化学分析	XRF or ICP testing verifies composition
粒度分布	レーザー回折分析
見かけ密度	ASTM B212規格によるホール流量計試験
粉末形態	粒子形状のSEMイメージング
流量分析	指定された漏斗を通過する重力流量
水分測定	乾燥減量試験

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
• Excellent electrical and thermal conductivity
• 良好な耐食性
• High ductility and excellent formability
• リサイクル可能で環境に優しい
• 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
• 発火性があるため、取り扱いには注意が必要
• Gradually oxidizes over time if uncoated

Comparison With Al-Mg Alloy Powder

Pure Al vs Al-Mg Alloy Powder

パラメータ	ピュア・アル	Al-Mg
密度	2.7 g/cc	2.7 g/cc
強さ	90-100 MPa	150-220 MPa
導電率	素晴らしい	グッド
耐食性	グッド	素晴らしい
コスト	低い	高い
用途	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.