CPTi prášek

Prášek CPTi (chemicky čistý titan) je vysoce čistý titanový kovový prášek používaný v různých aplikacích vyžadujících vynikající odolnost proti korozi, vysokou pevnost, nízkou hmotnost a biokompatibilitu. Nabízí vynikající vlastnosti ve srovnání s jinými druhy titanu a slitinovými prášky.

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Overview of CPTi Powder

Prášek CPTi (chemicky čistý titan) je vysoce čistý titanový kovový prášek používaný v různých aplikacích vyžadujících vynikající odolnost proti korozi, vysokou pevnost, nízkou hmotnost a biokompatibilitu. Nabízí vynikající vlastnosti ve srovnání s jinými druhy titanu a slitinovými prášky.

CPTi powder is produced by gas atomization process to achieve spherical powder morphology with minimal contamination. It has a particle size range of 15-150 microns generally. The high purity and cleanliness result in excellent flowability, packing density and sinterability.

Some key properties and advantages of CPTi powder include:

CPTi Powder Properties and Characteristics

Vlastnosti Podrobnosti
Složení 99.5% minimum Titanium. Low O, C, N, H, Fe impurities
Hustota 4,5 g/cc
Tekutost Excellent due to spherical morphology
Sinterability Excellent, achieves near full density
Tvar částic Převážně sférické
Rozsah velikosti částic 15-150 mikronů
Zdánlivá hustota 2.7-3.2 g/cc
Čistota Up to 99.995% Ti content
Nečistoty Low oxygen, nitrogen, carbon, iron
Barva Dark gray with metallic luster

CPTi Powder Key Advantages

  • High purity improves performance and biocompatibility
  • Spherical powder morphology provides good flow and packing
  • Widely used for additive manufacturing, metal injection molding
  • Corrosion resistance superior to stainless steel in many environments
  • Vysoký poměr pevnosti a hmotnosti
  • Netoxické a nealergizující
  • Can be alloyed to modify properties like strength
  • Cost-effective compared to wrought titanium

CPTi powder is an excellent choice for parts and products requiring the optimum combination of strength, low weight, corrosion resistance, fatigue resistance, and biocompatibility.

It is used for diverse applications in aerospace, medical, automotive, chemical, and consumer industries.

CPTi Powder Composition and Purity Grades

CPTi powder composition has a minimum of 99.5% titanium content. The impurity levels of oxygen, nitrogen, carbon, hydrogen and iron are carefully controlled. Higher purity grades up to 99.995% Ti are also produced.

CPTi Powder Composition

Živel Hmotnost %
Titan 99.5% min
Oxygen 0.08% – 0.40%
Uhlík 0.03% – 0.08%
Nitrogen 0.01% – 0.05%
Hydrogen 0.005% – 0.015%
Žehlička 0.05% – 0.25%

These impurity levels result in retainment of high strength and corrosion resistance associated with titanium metal. Specific alloying additions can also be made to modify properties like strength.

CPTi powder is available in different purity grades depending on requirements:

CPTi Purity Grades

Třída Čistota Velikost částic Aplikace
CPTi Grade 1 99.5% min Medium, large General use
CPTi Grade 2 99.9% Fine, medium Letectví a kosmonautika, zdravotnictví
CPTi Grade 3 99.95% Pokuta Lékařské, zubní
CPTi Grade 4 99.99% Ultrafine Implants, high purity uses

Higher purity reduces risk of toxicity, improves biocompatibility for medical uses. It also improves performance in high temperature applications.

However, higher purity increases cost. So suitable grade is selected based on balanced trade-off for intended application.

CPTi prášek

CPTi Powder Physical Properties

Key physical properties of CPTi powder which influence its processing and performance:

CPTi Powder Physical Properties

Vlastnosti Hodnoty
Hustota 4,5 g/cc
Bod tání 1668°C
Tepelná vodivost 21.9 W/mK
Elektrický odpor 53.8 ohm-cm
Youngův modul 107 GPa
Poissonův poměr 0.33
Mohs hardness 6
Odolnost proti oxidaci Up to 590°C in air
  • Density is quite low compared to other metals providing high strength-to-weight ratio
  • Melting point is moderately high allowing use for elevated temperature applications
  • Thermal conductivity is lower than other metals like aluminum or copper
  • Electrical resistivity is relatively high making it suitable for corrosion resistant fasteners and connectors
  • Hardness is similar to other titanium alloys but lower than high hardness metals
  • Oxidation resistance improves with higher purity levels

These properties make CPTi suitable for lightweight structural parts needing high mechanical performance and corrosion resistance.

CPTi Powder Mechanical Properties

Mechanical properties represent the strength, hardness, and workability of the material. Important mechanical properties:

CPTi Powder Mechanical Properties

Vlastnosti Hodnoty
Pevnost v tahu 420 – 550 MPa
Pevnost v tahu 380 – 470 MPa
Prodloužení 15 – 30%
Tvrdost 200-240 HV
Únavová pevnost 200-300 MPa
  • Tensile and yield strength are moderately high while elongation is reasonable
  • Fatigue strength is excellent compared to other competing materials
  • Hardness is similar or slightly lower than titanium alloys
  • Properties depend on factors like purity, porosity, processing method
  • Alloying with elements like Al, V, Mo can significantly increase the strength

The combination of good strength, ductility, fatigue life, and hardness provides balanced mechanical performance.

CPTi matches or exceeds the properties of stainless steels at a lower density. It offers the optimum trade-off between high strength and moderate ductility.

CPTi Powder Applications

CPTi powder is used across several industries owing to its excellent properties:

CPTi Powder Applications

Průmysl Příklady použití
Aerospace Engine components, airframe parts, fasteners
Lékařský Implants, prosthetics, instruments
Automobilový průmysl Valves, connecting rods, springs
Chemické Pumps, valves, tanks, pipes
3D tisk Aerospace and medical components
Vstřikování kovů Dental instruments, hardware
Investment casting Turbine blades, golf club heads

Some specific product applications include:

  • Ortopedické a zubní implantáty
  • Surgical instruments and bio-implants
  • Lightweight automotive engine parts like connecting rods
  • Aerospace hydraulic tubing and components like bushings
  • Food/chemical industry valves, pumps, pipes
  • Watch cases, jewelry
  • Sporting goods like golf clubs, bicycle frames
  • Additive manufacturing of aerospace and medical parts

The non-toxic property allows use in products which come in contact with food, pharmaceuticals, and biological fluids.

Overall, CPTi powder provides the best balance of properties for lightweight structural parts across multiple industries.

CPTi Powder Specifications

Industrial specifications and standards are used to evaluate CPTi powder quality and to ensure performance consistency:

CPTi Powder Standards

Standard Popis
ASTM B348 Standard specification for titanium and titanium alloy powders
ASTM F67 Standard specification for unalloyed titanium bars for surgical implants
ISO 5832-2 Implant grade wrought titanium materials

These standards specify requirements for:

  • Chemical composition – percentages of titanium and impurity levels
  • Physical properties like particle size distribution, flow rate, density
  • Mechanical properties like tensile and yield strength
  • Production method like argon gas atomization
  • Quality assurance through sampling, testing and inspection
  • Packaging and identification requirement

Reputable CPTi powder manufacturers produce material per ASTM standards and provide certification of compliance for critical applications.

CPTi Powder Particle Sizes

CPTi powder is produced in different particle size distributions based on application method:

CPTi Powder Particle Sizes

Velikost částic Typický rozsah velikostí Aplikace
Pokuta 1-25 mikronů Investment casting, MIM
Střední 25-45 mikronů Press and sinter, HIP
Hrubý 45-150 mikronů Thermal and cold spraying
  • Fine powder provides high sintered density and surface finish
  • Coarse powder has better flowability and is used for thermal spraying
  • Medium size range offers a balance suitable for press-and-sinter
  • Size distribution is optimized based on final part properties needed
  • Spherical morphology is maintained across all size ranges

Controlling particle size distribution and morphology is critical to achieve high powder packing density and sintered part quality.

CPTi Powder Apparent Density

Apparent density or tap density indicates the packed density of powder:

CPTi Powder Apparent Density

Zdánlivá hustota Charakteristika
2.7 – 3.0 g/cc Unalloyed CPTi powder
3.0 – 3.2 g/cc Alloyed CPTi powder
Až 50% skutečné hustoty Due to voids between particles
  • Vyšší zdánlivá hustota zlepšuje tok a stlačitelnost prášku.
  • Alloying elements like Al, V increase particle density
  • Values up to 60% are possible with optimized powder
  • High apparent density reduces press cycle time and improves part quality

Maximizing apparent density allows efficient powder pressing and sintering to full density. It improves manufacturing productivity.

CPTi Powder Production Methods

CPTi powder is commercially produced via gas atomization process using high purity Ti bars/rods:

CPTi Powder Production

Metoda Podrobnosti
Rozprašování plynu High pressure argon gas disintegrates molten Ti stream into fine droplets, which solidify into spherical powder
Vacuum arc melting High purity Ti input stock is refined to reduce gaseous impurities like O, N, H
Multiple melting Ensures chemical homogeneity of raw material
Sítování Classifies powder into different particle size distributions
Blending Powders with different particle sizes are mixed in optimized ratios
  • Gas atomization enables large scale production of spherical CPTi powder
  • Multiple steps produce high purity powder with controlled size and morphology
  • Argon gas prevents contamination during atomization
  • Post-processing provides customized powder grades for clients

Highly automated equipment allows efficient CPTi powder production with tight control over all attributes like purity, particle size distribution, morphology, and apparent density.

CPTi Powder Pricing

CPTi powder pricing depends on various factors:

CPTi Powder Pricing

Faktor Dopad
Čistota Price increases for higher purity
Velikost částic Ultrafine powder is more expensive
Množství Price reduces for bulk order quantities
Způsob výroby Multiple remelts increase cost
Balení Argon filled cylinders cost more
Testing/certification Additional cost for more rigorous testing
Lead time Faster delivery increases price

Indicative pricing for medium particle size powder:

  • CPTi Grade 1: $50-$100 per kg
  • CPTi Grade 2: $100-$150 per kg
  • CPTi Grade 3: $150-$300 per kg
  • CPTi Grade 4: $300+ per kg

Reduced prices are typical for bulk orders exceeding several hundred kgs.

CPTi Powder Suppliers

Popular suppliers of CPTi Powder include:

CPTi Powder Suppliers

Společnost Umístění
Pokročilé prášky a nátěry USA
Atlantik vybavení inženýrů USA
Reading Alloys, Inc. USA
TLS Technik GmbH & Co. Německo
AP&C Kanada
Xi’an Saite Metal Materials Čína

Factors to consider when selecting supplier:

  • powder grade options
  • average particle size ranges
  • production capacity
  • powder morphology and consistency
  • packaging options
  • lead time and delivery
  • pricing
  • compliance with ASTM standards
  • inspection and testing processes
  • quality assurance and control

CPTi Powder Handling and Safety

Safe powder handling practices should be followed:

CPTi Powder Handling

Doporučení Důvod
Vyhněte se vdechování Due to small particle size
Use protective masks Prevent ingestion through nose/mouth
Conduct handling in ventilated areas Reduce airborne powder circulation
Use hazmat suits in large operations Minimize skin contact
Ensure no ignition sources nearby Prášek může v kyslíkové atmosféře hořet
Follow anti-static protocols Prevent accidental fire due to buildup of static charge
Používejte nejiskřící nástroje Avoids possibility of ignition during handling
Skladujte uzavřené nádoby v chladném a suchém prostředí. Prevents moisture pickup and reactivity

Although CPTi powder is relatively inert compared to reactive metal powders, following precautions is necessary to mitigate safety and fire risks.

CPTi Powder Inspection and Testing

Quality testing ensures CPTi powder meets the required material specifications:

CPTi Powder Testing

Test Podrobnosti
Chemistry analysis ICP spectroscopy verifies elemental composition
Distribuce velikosti částic Sieve analysis determines size distribution
Zdánlivá hustota Measured as per ASTM B212 standard
Morfologie prášku Scanning electron microscopy verifies spherical shape
Průtoková rychlost Time taken for fixed powder quantity to flow through defined nozzle
Hustota poklepání Density measured after mechanically tapping powder sample
Stlačitelnost Monitoring of powder bed density change during compression

Rigorous testing protocols ensure reliable and consistent high performance of CPTi powder for critical applications.

CPTi Powder Storage and Reactivity

CPTi powder has moderate reactivity:

CPTi Powder Storage

Faktor Efekt
Air, oxygen Moderate oxidation risk above 500°C
Moisture Low corrosion rate at room temperature
Hydrocarbons Risk of fire if allowed to contaminate powder
Acids, bases Low corrosion rates in neutral solutions
Organic solvents Some absorption and discoloration if immersed
Elevated temperatures Increased reactivity with oxygen and nitrogen

Recommendations:

  • Store in sealed inert gas filled containers
  • Keep below 30°C temperature
  • Open containers only in dry, controlled environments
  • Limit contact with oxidizing acids and chlorinated hydrocarbons

With proper precautions during storage and handling, CPTi powder exhibits excellent stability and low reactivity.

Comparison With Ti-6Al-4V Alloy Powder

Ti-6Al-4V is a popular alpha-beta titanium alloy powder. Comparison with CPTi:

CPTi vs Ti-6Al-4V Powder

Parametr CPTi prášek Prášek Ti-6Al-4V
Hustota 4,5 g/cc 4.42 g/cc
Pevnost v tahu 420 – 550 MPa 950 – 1050 MPa
Tažnost 15 – 30% 10 – 18%
Únavová pevnost 200 – 300 MPa 500 – 600 MPa
Odolnost proti korozi Vynikající Mírný
Odolnost proti oxidaci Vynikající Dobrý
Náklady Nízký Mírný
Toxicita Žádný Nízký
Používá Low temperature applications, prosthetics Letecké komponenty, automobilové díly
  • CPTi provides better ductility and oxidation resistance
  • Ti-6Al-4V is stronger with higher fatigue strength
  • CPTi has better bio-compatibility and corrosion resistance
  • Ti-6Al-4V provides higher strength-to-weight ratio
  • CPTi is more cost effective while Ti-6Al-4V offers higher performance

CPTi Powder Pros and Cons

Advantages of CPTi Powder:

  • Vynikající odolnost proti korozi
  • Vysoký poměr pevnosti a hmotnosti
  • Good ductility and fracture toughness
  • Non-toxic and biocompatible
  • Non-magnetic and thermally stable
  • Cost-effective compared to titanium alloys
  • Can be alloyed to enhance properties
  • Suitable for diverse applications across industries

Limitations of CPTi Powder:

  • Relatively expensive compared to iron/steel powders
  • Lower strength than titanium alloys
  • Moderate high temperature oxidation resistance
  • Requires protective atmospheres during processing
  • Susceptible to galling and seizure in sliding contact
  • Harder to machine compared to steels and aluminum alloys

CPTi Powder FAQs

Q: What are the main advantages of CPTi powder?

A: The main advantages are high strength, low density, excellent corrosion resistance, biocompatibility, thermal stability and cost-effectiveness.

Q: What are the typical applications of CPTi powder?

A: Major applications are orthopedic implants, dental implants, aerospace components, automotive parts, sporting goods, jewelry, chemical equipment, and medical devices.

Q: What are the differences between various CPTi powder grades?

A: Higher purity powder grades (grade 3 and 4) are used for medical implants and high performance applications. Lower grades provide adequate properties at lower cost for industrial uses.

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