Với 99,95 bột

Overview of Cu 99.95 Powder

Cu 99.95 powder, also referred to as electrolytic tough pitch (ETP) copper powder, is a high purity copper powder containing a minimum of 99.95% copper.

It has excellent electrical and thermal conductivity combined with good mechanical properties. Key applications include electrical contacts, brushes, welding products, brazing, friction materials and diamond tools.

Some key properties and advantages of Cu 99.95 powder include:

Cu 99.95 Powder Properties and Characteristics

Của cải	Details
Thành phần	99.95% minimum copper
Tỉ trọng	8.94 g/cc
Hình dạng hạt	Không đều, góc
Phạm vi kích thước	2-150 microns
Mật độ rõ ràng	Lên đến 50% mật độ thực
Khả năng chảy	Low to moderate
Độ dẫn nhiệt	Excellent electrical and thermal conductivity
Thiêu kết	Good sinterability in H2 atmosphere
Sự thuần khiết	High purity copper

Cu 99.95 provides an optimal balance of conductivity, mechanical properties, sintering characteristics and cost for fabrication of parts via pressing and sintering.

Cu 99.95 Powder Composition

Typical composition of Cu 99.95 powder:

Cu 99.95 Powder Composition

Yếu tố	Cân nặng %
Đồng (CU)	99.95% min
Oxy (O)	Tối đa 0,05%
Lead (Pb)	0.005% max
Other impurities	0.005% max

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

High copper content gives excellent electrical and thermal conductivity combined with good mechanical properties after sintering.

Cu 99.95 Powder Physical Properties

Cu 99.95 Powder Physical Properties

Của cải	Giá trị
Tỉ trọng	8.94 g/cc
Độ nóng chảy	1083°C
Dẫn nhiệt	400 W/mK
Điện trở suất	1.72 μΩ-cm
Recrystallization temperature	200-300°C
Nhiệt độ Curie	-269°C

• High density compared to iron and aluminum
• Excellent thermal conductivity for heat removal
• Low electrical resistivity provides high conductivity
• Resistivity increases above Curie temperature
• Recrystallization enables sintering and improves ductility

The physical properties make Cu 99.95 suitable for applications like electrical contacts and brushes requiring high conductivity.

Cu 99.95 Powder Mechanical Properties

Cu 99.95 Powder Mechanical Properties

Của cải	Giá trị
Sức căng	220-340 MPa
Sức mạnh năng suất	70-190 MPa
Kéo dài	35-60%
Độ cứng	45-90 HB
Mô đun đàn hồi	110-130 GPa
Cường độ nén	500-700 MPa

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

The mechanical properties make Cu 99.95 suitable for softer conductive components that require deformation and compressive strength.

Cu 99.95 Powder Applications

Typical applications of Cu 99.95 powder include:

Cu 99.95 Powder Applications

Ngành công nghiệp	Ví dụ ứng dụng
Electrical and electronics	Contacts, connectors, brushes, RF shielding
Ô tô	Brushes, bushings, bearings
Công nghiệp	Welding electrodes, casting molds, metal matrix composites
Chế tạo	Brazing and soldering, tooling components
Friction products	Brake pads, clutch discs

Một số cách sử dụng cụ thể:

• Sliding electrical contacts and brushes
• Structural components requiring conductivity
• Jewelry crafting and artisanal products
• Diamond tools with copper metal matrix
• Welding rods and brazing paste formulations
• Mold liners for casting reactive alloys

The excellent balance of conductivity, mechanical properties, formability and cost make Cu 99.95 suitable for this broad range of applications.

Cu 99.95 Powder Specifications

Key specifications for Cu 99.95 powder include:

Cu 99.95 Powder Specifications

Tiêu chuẩn	Sự miêu tả
ASTM B602	Standard specification for undeformed, wrought, electrolytic tough pitch copper
JIS H3125	Electrolytic copper and copper alloy powders
ISO 3497	Copper powders for general purposes
ASTM B Guidance	Apparent density, flow rate, particle size distribution

Các tiêu chuẩn này xác định:

• Minimum 99.95% copper content
• Limits on impurities like O, Pb
• Required powder characteristics
• Production method – electrolytic process
• Phân phối kích thước hạt có thể chấp nhận được
• Testing methods for powder properties

Compliance ensures the powder meets the required purity and properties for the intended application.

Cu 99.95 Powder Particle Sizes

Cu 99.95 Powder Particle Size Distribution

Kích thước hạt	Đặc trưng
2-20 microns	Very fine powder used in microelectronics
5-30 microns	Fine powder for sintering and injection molding
15-150 micron	Coarse powder suitable for pressing

• Finer powder sizes provide greater sintered density
• Coarse powder has better flowability for automated filling
• Size range tailored based on part requirements
• Both irregular and spherical powder shapes are available

Controlling particle size distribution allows optimizing pressing characteristics, sintered density and properties.

Cu 99.95 Powder Apparent Density

Cu 99.95 Powder Apparent Density

Mật độ rõ ràng	Details
Lên đến 50% mật độ thực	Đối với hình thái bột không đều
3.5-5.0 g/cc typical	Compacts to nearly full density after pressing and sintering

• Higher apparent density improves powder flow and compactibility
• Hình thái không đều giới hạn mật độ đóng gói tối đa
• Giá trị lên đến 60% là có thể với bột hình cầu được tối ưu hóa
• High green density after compaction enables good sintering

Higher apparent density improves manufacturing productivity and part quality.

Cu 99.95 Powder Production Method

Cu 99.95 Powder Production

Phương pháp	Details
Điện phân	Copper cathodes dissolved anodically into Cu+ ions which are deposited onto stainless steel cathodes
Grinding	Coarse powder broken down and classified into specific size ranges
Ủ	Softens the powder particles and improves compressibility
Reducing atmosphere	Prevents oxidation of particles during production

• Automated electrolytic process allows high purity powder production
• Grinding and sieving provides controlled particle size distribution
• Annealing enables easy compaction into high density parts
• Strict process control ensures reliable and consistent powder quality

Cu 99.95 Powder Pricing

Cu 99.95 Powder Pricing

Nhân tố	Tác động đến giá cả
Độ tinh khiết	Lớp độ tinh khiết cao hơn có giá cao hơn
Kích thước hạt	Ultrafine is more expensive
số lượng đặt hàng	Price decreases with bulk orders
Phương pháp sản xuât	Additional processing increases cost
Bao bì	Special packaging like vacuum sealing adds cost

Giá chỉ định

• Cu 99.95 fine powder: $8-12 per kg
• Cu 99.95 coarse powder: $7-10 per kg
• Reduced pricing applicable for bulk orders >500 kg

Pricing depends on order volume, particle size, production method, purity level and packaging.

Cu 99.95 Powder Suppliers

Cu 99.95 Powder Suppliers

Công ty	Vị trí
Kymera International	Hoa Kỳ
GGP Metalpowder	nước Đức
American Chemet Corporation	Hoa Kỳ
Shanghai CNPC Powder Material	Trung Quốc
Nuclead	Pháp
Libo Metals	Trung Quốc

Các yếu tố lựa chọn cho các nhà cung cấp:

• Powder purity levels and grades offered
• Năng lực sản xuất và thời gian dẫn đầu
• Average particle size ranges
• Customization of size distribution
• Packaging and minimum order quantity
• Mức giá dựa trên khối lượng đơn đặt hàng
• Compliance with international specifications

Cu 99.95 Powder Handling and Storage

Cu 99.95 Powder Handling

Sự giới thiệu	Lý do
Tránh hít vào	Potential respiratory irritation
Use masks, gloves	Prevent ingestion
Đảm bảo thông gió đầy đủ	Reduce airborne particles
Tránh các nguồn đánh lửa	Flammable dust hazard
Follow anti-static procedures	Ngăn lửa từ xả tĩnh
Use non-sparking tools	Avoid ignition during handling
Store in cool, dry location	Prevent oxidation and moisture absorption

Khuyến nghị lưu trữ

• Store in sealed containers away from acids or chlorides
• Duy trì nhiệt độ dưới 27 ° C
• Limit exposure to:
  • Oxidizing acids like nitric acid
  • Hot sulfuric acid
  • Hydrogen sulfide
  • Ammonia solutions
  • Chlorinated hydrocarbons

Proper handling and storage helps preserve purity and prevent reactivity or fire hazards.

Cu 99.95 Powder Inspection and Testing

Cu 99.95 Powder Testing

Test Type	Details
Phân tích hóa học	ICP analysis to verify composition
Phân phối kích thước hạt	Phân tích nhiễu xạ laser
Mật độ rõ ràng	Hall flowmeter test per ASTM B212
Hình thái bột	Hình ảnh SEM
Chạm vào mật độ	Measured after mechanical tapping
Phân tích tốc độ dòng chảy	Tốc độ dòng trọng lực thông qua vòi phun được chỉ định

Stringent testing ensures the powder meets chemical, physical and morphological specifications required for the application.

Cu 99.95 Powder Pros and Cons

Advantages of Cu 99.95 Powder

• Excellent electrical and thermal conductivity
• Good ductility and malleability
• Cost-effective compared to pure silver or gold
• Good corrosion resistance and bio-compatibility
• Easy to sinter and compress into high density parts
• Recyclable and environmentally friendly

Limitations of Cu 99.95 Powder

• Lower strength than high strength alloys
• Điện trở oxy hóa nhiệt độ cao vừa phải
• Heavy compared to magnesium and aluminum
• Not suitable for highly stressed load-bearing components
• Surface tarnishing over time if uncoated
• Restricted food contact applications

Comparison With CuCrZr Powder

Cu 99.95 vs CuCrZr Powder

Tham số	Cu 99.95	CuCrZr
Tỉ trọng	8.94 g/cc	8.8 g/cc
Sức mạnh	220-340 MPa	450-650 MPa
Độ dẫn nhiệt	Xuất sắc	Vừa phải
Ổn định nhiệt	Hội chợ	Xuất sắc
Trị giá	Thấp	Cao
Sử dụng	Electrical, thermal,moderate load	High strength structural parts

• Cu 99.95 has better conductivity and lower cost
• CuCrZr provides higher strength and thermal stability
• Cu 99.95 suitable for softer conductive components
• CuCrZr preferred for high load structural parts

Cu 99.95 Powder FAQs

Q: What are the main applications of Cu 99.95 powder?

A: The main applications include electrical contacts, brushes, welding products, diamond tools, brazing alloys, friction materials, and metal matrix composites. It is widely used in electronics, automotive and industrial products.

Q: What affects the properties of Cu 99.95 powder parts?

A: Key factors affecting properties are apparent density, amount of lubricant, compacting pressure, sintering time/temperature, powder composition, particle size distribution, and presence of impurities.

Q: What precautions should be taken when handling Cu 99.95 powder?

A: Recommended precautions include avoiding inhalation, ensuring proper ventilation, wearing protective gear, controlling static discharge, using non-sparking tools, avoiding ignition sources, and storing in a cool, dry location in sealed containers.

Q: How does Cu 99.95 powder differ from bronze and brass powders?

A: Bronze and brass are copper alloys with tin and zinc while Cu 99.95 is pure copper. It has higher conductivity but lower strength than bronze or brass. Cu 99.95 is more cost-effective.