Rent aluminiumpulver

Overview of Pure Aluminum Powder

Pure aluminum powder contains 99% or higher aluminum content. It provides low density combined with good ductility, conductivity, and corrosion resistance.

Key properties and advantages of pure aluminum powder include:

Pure Aluminum Powder Properties and Characteristics

Fastigheter	Detaljer
Sammansättning	99% or higher Al content
Täthet	2,7 g/cc
Partikelns form	Sfärisk, oregelbunden
Storleksintervall	1-150 mikrometer
Skenbar densitet	Upp till 50% av verklig densitet
Konduktivitet	Utmärkt elektrisk och termisk ledningsförmåga
Korrosionsbeständighet	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

Element	Vikt %
Aluminium (Al)	99% min
Kisel (Si)	0,5% max
Järn (Fe)	0,5% max
Koppar (Cu)	0,05% max
Mangan (Mn)	0,05% max
Magnesium (Mg)	0,05% max
Andra orenheter	0,05% max

• 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

Fastighet	Värden
Täthet	2,7 g/cc
Smältpunkt	660°C
Termisk ledningsförmåga	237 W/mK
Elektrisk resistivitet	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
• Låg elektrisk resistivitet ger hög ledningsförmåga
• Relativt hög CTE kräver designöverväganden
• 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

Fastighet	Värden
Draghållfasthet	90-100 MPa
Sträckgräns	35-45 MPa
Töjning	35-40%
Hårdhet	25-35 HB
Utmattningshållfasthet	50-90 MPa
Skjuvhållfasthet	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	Användningsområden
Thermite welding	Rail welding, metal joining
Additiv tillverkning	Low strength components
Explosives and pyrotechnics	Thermite compositions
Powder coatings	Conductive and resistant coatings
Diamond tools	Metal matrix with diamond particles
Fireworks	Fuel and pyrotechnic compositions

Vissa specifika produktanvändningar:

• 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

Standard	Beskrivning
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

Dessa definierar:

• Minimum 99% aluminum content
• Limits on impurities like Fe, Si
• Powder characteristics like apparent density and particle size distribution
• Approved production methods like atomization
• Provtagnings- och testprotokoll

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

Pure Aluminum Powder Particle Sizes

Pure Aluminum Powder Particle Size Distribution

Storlek	Egenskaper
1-10 mikrometer	Ultrafine grade used in printing pastes
10-45 microns	Fine grade suitable for coatings, pressing
45-150 mikrometer	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

Skenbar densitet	Detaljer
Upp till 50% av verklig densitet	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
• Värden upp till 60% är möjliga med optimerat sfäriskt pulver

Higher apparent density leads to better manufacturing productivity and part quality.

Pure Aluminum Powder Production

Pure Aluminum Powder Production

Metod	Detaljer
Atomization	Molten aluminum stream broken into fine droplets that solidify into powder
Kulfräsning	Mechanical milling classifies coarse powder into fine powder
Glödgning	Removes internal stresses and improves powder compressibility
Siktning	Classifies powder into different size fractions

• 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	Påverkan på priset
Renhet	Högre renhetsklasser kostar mer
Partikelstorlek	Ultrafint pulver är dyrare
Ordervolym	Bulk orders get discounted pricing
Produktionsmetod	Komplexa metoder ökar kostnaderna
Förpackning	Special packaging adds cost

Indikativ prissättning

• 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

Företag	Plats
Advanced Chemical Company	USA
Micron Metals	USA
Baohua Metal Materials	Kina
Hengxing Metallurgical	Kina
Shanghai ShuiDing Powder Material	Kina
Reade Advanced Materials	USA

Urvalsfaktorer för leverantörer:

• Purity levels and grades available
• Produktionskapacitet och ledtider
• Intervall för genomsnittlig partikelstorlek
• 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

Rekommendation	Anledning
Use proper ventilation	Avoid concentrated dust environment
Employ grounding systems	Prevent static discharge during handling
Limit moisture exposure	Prevents oxidation of particles
Följ säkra protokoll	Minska hälso- och brandriskerna
Undvik antändningskällor	Flammable powder risk
Använd verktyg som inte slår gnistor	Förhindra risken för antändning

Rekommendationer för lagring

• 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

Test	Detaljer
Kemisk analys	XRF or ICP testing verifies composition
Fördelning av partikelstorlek	Laserdiffraktionsanalys
Skenbar densitet	Hall-flödesmätartest enligt ASTM B212-standarden
Morfologi för pulver	SEM-avbildning av partikelform
Analys av flödeshastighet	Gravity flow rate through specified funnel
Fuktmätning	Förlust vid torkningstest

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
• Utmärkt elektrisk och termisk ledningsförmåga
• God korrosionsbeständighet
• High ductility and excellent formability
• Återvinningsbar och miljövänlig
• 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
• Pyroforisk natur kräver försiktig hantering
• Gradually oxidizes over time if uncoated

Comparison With Al-Mg Alloy Powder

Pure Al vs Al-Mg Alloy Powder

Parameter	Pure Al	Al-Mg
Täthet	2,7 g/cc	2,7 g/cc
Styrka	90-100 MPa	150-220 MPa
Konduktivitet	Utmärkt	Bra
Korrosionsbeständighet	Bra	Utmärkt
Kostnad	Låg	Hög
Användningsområden	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.