Zuiver koperpoeder

Overview of Pure Copper Powder

Zuiver koperpoeder bevat 99,5% of meer koper. Het biedt uitstekende thermische en elektrische geleidbaarheid in combinatie met goede corrosiebestendigheid, soldeerbaarheid en biocompatibiliteit.

Key properties and advantages of pure copper powder:

Pure Copper Powder Properties and Characteristics

Eigenschappen	Details
Samenstelling	99.5% or higher copper content
Dikte	8.94 g/cc
Deeltjesvorm	Bolvormig, onregelmatig
Maatbereik	1-150 micron
Schijnbare dichtheid	Tot 50% ware dichtheid
Geleidbaarheid	Excellent, second only to silver
Solderability	Excellent due to oxidation resistance
Bio-compatibiliteit	High, safe for food contact

Pure copper powder is ideal for applications like welding products, brazing alloys, friction materials, diamond tools, electrical contacts, and metal injection molding.

Pure Copper Powder Composition

Typical composition of pure copper powder:

Pure Copper Powder Composition

Element	Gewicht %
Koper (Cu)	99,5% min
Zuurstof (O)	Maximaal 0,05%
Lead (Pb)	0.005% max
Other impurities	0.005% max

• Copper provides excellent conductivity and corrosion resistance
• Oxygen present as impurity affects conductivity and sintering
• Lead and other impurities carefully controlled

High copper content, low oxide, and minimal impurities result in excellent electrical and thermal conductivity combined with good mechanical properties.

Pure Copper Powder Physical Properties

Pure Copper Powder Physical Properties

Eigendom	Waarden
Dikte	8.94 g/cc
Smeltpunt	1083°C
Warmtegeleiding	400 W/mK
Elektrische weerstand	1.72 μΩ-cm
Recrystallization temperature	200-300°C
Curie-temperatuur	-269°C

• High density compared to magnesium or aluminum
• Excellent thermal conductivity for heat dissipation
• Low electrical resistivity provides high conductivity
• Recrystallization enables sintering and improves ductility
• Resistivity increases above Curie point

These properties make pure copper suitable for highly conductive components like electrical contacts and brushes.

Pure Copper Powder Mechanical Properties

Pure Copper Powder Mechanical Properties

Eigendom	Waarden
Treksterkte	220-340 MPa
Opbrengststerkte	69-172 MPa
Verlenging	35-60%
Hardheid	45-90 HB
Elasticiteitsmodulus	110-130 GPa
Druksterkte	500-700 MPa

• Good combination of strength and very high ductility
• Relatively low hardness and high malleability
• Moderate strength compared to high strength alloys
• Properties depend on factors like porosity and grain size

The properties make pure copper suitable for soft, highly conductive components requiring good deformation and compressive strength.

Pure Copper Powder Applications

Typical applications of pure copper powder include:

Pure Copper Powder Applications

Industrie	Toepassingen
Electricals	Contacts, brushes, welding electrodes
Elektronica	Conductive adhesives, RF shielding
Automobiel	Brushes, bushings, bearings
Industrieel	Diamond tools, casting molds
Productie	Brazing alloys, powder metallurgy
Friction products	Brake pads, clutch discs

Enkele specifieke producttoepassingen:

• Sliding electrical contacts and brushes
• Heat sinks and thermal management components
• Welding rods, brazing pastes, and solder filler metal
• Metal matrix composites like diamond tools
• Net shape components made via metal injection molding
• Pump bushings, impellers, and other wear parts

The high conductivity, corrosion resistance, bio-compatibility and moderate strength make pure copper suitable for this diverse range of electrical, thermal, and moderate wear applications across all industries.

Pure Copper Powder Specifications

Key specifications for pure copper powder include:

Pure Copper Powder Specifications

Standaard	Beschrijving
ASTM B602	Specification for high purity electrolytic copper powder
JIS H2111	Specs for electrolytic copper and copper alloy powders
ISO 3497	Specification for general purpose copper powders
ASTM B243	Guidance on apparent density and flow rate

Deze definiëren:

• Minimum 99.5% copper content
• Limits on impurities like oxygen and lead
• Required powder characteristics
• Apparent density and flow rate
• Approved production method – electrolytic
• Sampling and testing protocols

Meeting these specifications ensures suitability for applications needing high thermal and electrical conductivity combined with good mechanical properties.

Pure Copper Powder Particle Sizes

Pure Copper Powder Particle Size Distribution

Maat	Kenmerken
1-10 micron	Ultrafine grade used in microelectronics
10-30 microns	Fine grade suitable for sintering
30-150 microns	Coarse grade has good flow for pressing

• Finer sizes provide higher sintered density
• Coarser powder has improved flowability
• Size range tailored based on targeted application
• Both spherical and irregular shapes available

Controlling particle size distribution optimizes pressing behavior, sintered density and final part properties.

Pure Copper Powder Apparent Density

Pure Copper Powder Apparent Density

Schijnbare dichtheid	Details
Tot 50% ware dichtheid	Voor onregelmatige poedermorfologie
3.5-5.0 g/cc typical	Verbetert met een grotere pakkingsdichtheid

• Een hogere schijnbare dichtheid verbetert de poederstroom en de samendrukbaarheid
• Onregelmatige morfologie beperkt de maximale pakkingsdichtheid
• Values up to 60% achievable with spherical powder
• High apparent density enables easier compaction

Higher apparent density leads to more efficient powder pressing and sintering to full density.

Pure Copper Powder Production

Pure Copper Powder Production

Methode	Details
Elektrolyse	Copper cathodes dissolved anodically into Cu+ ions and deposited on stainless steel cathodes
Kogel malen	Coarse powder broken down and classified into specific sizes
Gloeien	Softens the powder particles and improves compressibility
Reducing atmosphere	Prevents oxidation of particles during production

• Automated electrolytic process allows large scale production
• Milling and sieving provides controlled particle size distribution
• Annealing facilitates pressing and handling
• Strict process control ensures high purity and repeatable quality

Pure Copper Powder Pricing

Pure Copper Powder Pricing

Factor	Impact op de prijs
Zuiverheidsgraad	Een hogere zuiverheid verhoogt de kosten
Deeltjesgrootte	Ultrafijn poeder duurder
Bestelhoeveelheid	Bulk orders have lower per unit pricing
Productie methode	Additional processing increases cost
Verpakking	Special packaging like vacuum sealing adds cost

Indicatieve prijzen

• Ultrafine pure copper powder: $15-25 per kg
• Coarse pure copper powder: $10-15 per kg
• Prijzen voor grote volumes kunnen 40% lager zijn

Pricing depends on purity, particle size, production method, order quantity, packaging etc.

Pure Copper Powder Suppliers

Pure Copper Powder Suppliers

Bedrijf	Plaats
Kymera International	VS
GGP Metalpowder	Duitsland
American Chemet Corporation	VS
Shanghai CNPC Powder Material	China
Mitsui Kinzoku	Japan
Nuclead	Frankrijk

Selectiefactoren voor leveranciers:

• Purity levels and grades offered
• Productiecapaciteit en doorlooptijden
• Average particle size ranges
• Customization of size distribution
• Packaging options and order quantities
• Pricing levels based on volume
• Compliance with international specifications

Pure Copper Powder Handling and Storage

Pure Copper Powder Handling

Aanbeveling	Reden
Zorg voor goede ventilatie	Blootstelling aan fijne deeltjes voorkomen
Gebruik geschikte PBM's	Vermijd accidentele inname
Volg veilige protocollen	Reduce health hazards
Ontstekingsbronnen vermijden	Brandbaar stofgevaar
Grondapparatuur	Prevent static discharge
Gebruik vonkvrij gereedschap	Voorkom de mogelijkheid van ontsteking

Aanbevelingen voor opslag

• Store in stable containers in a cool, dry area
• Limit exposure to acids, ammonia, acetylene
• Houd de temperatuur onder de 30°C

Proper precautions during handling and storage help preserve purity and prevent safety issues.

Pure Copper Powder Inspection and Testing

Pure Copper Powder Testing

Test	Details
Chemische analyse	ICP or XRF verifies composition
Deeltjesgrootteverdeling	Laserdiffractieanalyse
Schijnbare dichtheid	Hall flowmeter test per ASTM B212
Poedermorfologie	SEM-beeldvorming van deeltjesvorm
Tikdichtheidstest	Dichtheid gemeten na mechanisch tappen
Analyse van de stroomsnelheid	Gravity flow through a specified funnel

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

Pure Copper Powder Pros and Cons

Advantages of Pure Copper Powder

• Uitstekende thermische en elektrische geleidbaarheid
• Good corrosion resistance and bio-compatibility
• High purity provides optimal performance
• Easy to sinter and compress into high density components
• Ductile and malleable
• Recyclable and environmentally sustainable

Limitations of Pure Copper Powder

• Lower strength than many alloy powders
• Matige oxidatieweerstand bij hoge temperaturen
• Heavy compared to magnesium or aluminum
• Not suitable for high wear or load bearing applications
• Sensitive to contamination from zinc and sulfur
• Gradually tarnishes over time if uncoated

Comparison With Brass and Bronze Powders

Pure Copper vs. Brass and Bronze Powders

Parameter	Pure Copper	Brass/Bronze
Dikte	8.94 g/cc	8.7-8.8 g/cc
Kracht	220-340 MPa	350-550 MPa
Geleidbaarheid	Uitstekend	Goed
Corrosieweerstand	Uitstekend	Goed
Kosten	Laag	Gematigd
Toepassingen	Elektrisch, thermisch	Hardware, decorative

• Pure copper has higher conductivity and ductility
• Brass/bronze offer higher strength
• Pure copper better suited for thermal management
• Brass/bronze used for hardware and decorative items

Pure Copper Powder FAQs

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

A: Main applications include electrical contacts and brushes, welding rods, brazing alloys, diamond tools, heat sinks, net shape components made via powder metallurgy, friction materials, and conductive adhesives.

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

A: Recommended precautions include proper ventilation, appropriate PPE, safe handling protocols, grounding equipment, avoiding ignition sources, using non-sparking tools, and storing in stable inert containers away from contaminants.

Q: How does pure copper powder differ from electrolytic tough pitch (ETP) copper?

A: Pure copper powder has 99.5% or higher copper content, while ETP copper powder has minimum 99.5% copper. Pure copper provides slightly higher conductivity but the two are mostly interchangeable for common applications.

Q: What affects the properties of parts made from pure copper powder?

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