니켈 기반 K403 파우더

Overview of Nickel-based K403 Powder

K403 powder is a nickel-chromium-iron-molybdenum alloy powder. It offers excellent resistance to oxidation, corrosion and thermal fatigue cracking. K403 has good phase stability at high temperatures.

Key features of K403 powder include:

• 뛰어난 고온 강도와 크리프 저항성
• Resists oxidation and hot corrosion up to 1150¡«C
• Retains properties under cyclic heating conditions
• Compatible coefficient of expansion with common alloys
• 다양한 크기 범위와 형태 제공

K403 powder is designed for protective coatings, thermal spray, welding, brazing, and other high temperature applications.

This article provides a detailed look at the composition, properties, applications, specifications, pricing, safety, and other essential information about nickel-based K403 powder.

Composition of Nickel-based K403 Powder

The typical composition of nickel-based K403 powder is:

요소	컴포지션
니켈(Ni)	균형
크로뮴(Cr)	21-23%
철(Fe)	17-20%
몰리브덴 (Mo)	8-10%
텅스텐(W)	1-2%
망간(Mn)	¨P0.5%
실리콘(Si)	¨P0.5%
탄소(C)	¨P0.1%

 

Nickel gives corrosion resistance. Chromium and iron provide oxidation resistance. Molybdenum and tungsten impart strength at high temperatures.

The exact composition is tailored based on the powder production method and application requirements.

Properties of Nickel-based K403 Powder

K403 powder exhibits the following properties:

부동산	상세 정보
밀도	8.2g/cm3
용융점	1350-1400년대
열 전도성	11 W/m.K
전기 저항률	94 microhm-cm
영률	207 GPa
푸아송 비	0.29-0.30
장력 강도 (Tensile strength)	¡Ô 550 MPa up to 1050¡«C
연장	15-25%
단단함 (Dandanhame)	30-35 HRC
산화 저항	Excellent isothermal up to 1150¡«C

 

The alloy maintains high strength and hardness at elevated temperatures. It has good ductility for deformation processing. The material resists thermal fatigue cracking.

Applications of Nickel-based K403 Powder

Nickel-based K403 powder is designed for use in high temperature environments. Typical applications include:

열 스프레이 코팅: Used to apply thick coatings resistant to wear, corrosion and oxidation at high temperatures via wire/powder flame or electric arc spraying.

용접: Used as filler material for joining high temperature alloys providing oxidation and corrosion resistance.

브레이징: Excellent filler alloy for brazing assemblies operating at over 1000¡«C like turbine components, heat exchangers etc.

부가적 제조: Selective laser melting and other powder bed fusion processes can utilize K403 powder to fabricate parts.

가스 터빈: Powder metallurgy turbine components exposed to hot gas paths like blades, vanes, seals.

화학 산업: K403 coated components in fluidized bed reactors, heat exchangers, cyclone separators.

Glass Industry: Powder sprayed rolls, guides, baffles used in glass melting furnaces and forehearths.

열처리: Fixtures, trays, baskets operating under high temperature applications.

Specifications and Grades of K403 Powder

K403 powder is available in various size ranges, morphologies and grades:

입자 크기: Ranging from 10-45 microns for AM methods, up to 150 microns for thermal spray processes.

형태론: Spherical, irregular and dendritic particle shapes available. Spherical powders have better flowability.

학년: Powder can be tailored as per AMS 7875, AMS 5887 or other high temperature alloy specifications.

순수함: High purity argon gas atomized powder available for critical applications.

사용자 지정: Alloy chemistry and particle characteristics can be customized as per application requirements.

Global Suppliers of Nickel-based K403 Powder

Some of the major global suppliers of nickel-based K403 powder include:

회사 (Hoesa)	국가
산드빅	스웨덴
카펜터 기술	미국
호가나스	스웨덴
프락세어	미국
CNPC 파우더	중국
VDM 금속	독일
AMETEK	미국

 

These companies produce K403 powder using various techniques like argon gas atomization, plasma atomization, and electrode induction melting to achieve desirable powder characteristics.

Pricing of Nickel-based K403 Powder

Nickel-based K403 powder is costlier than simple alloy powders due to the complex chemistry and processing:

• 수량?- Prices range from $80-120/kg for bulk orders above 1000 kg. Smaller quantities are priced higher.
• 품질?- High purity, spherical morphology powder manufactured under controlled conditions using advanced processes demands premium pricing.
• 공급자?- Major global suppliers tend to offer competitive pricing owing to higher volumes.
• 지리?- Prices vary across regions with USA and Europe being higher priced markets compared to China and India.

For critical applications, buyers should focus on quality rather than lowest cost while procuring K403 powder. Sourcing powder that meets specifications is vital for performance.

Health and Safety Considerations for K403 Powder

As a metallic alloy powder, K403 poses some health and safety risks:

• Fine powders can be a dust explosion hazard. Prevent dust accumulation and ignition sources.
• May cause skin and eye irritation upon prolonged exposure. Use personal protective equipment.
• Inhalation must be avoided. Use respiratory protection while handling powder.
• Powder may catalyze reactions with oxidizers. Prevent contact between incompatible materials.
• Proper grounding of equipment, ventilation, hygiene practices essential when handling the powder.
• Refer to applicable safety data sheets from suppliers for complete health hazard information.

Safety procedures for metallic powders like inert gas gloveboxes, explosion suppression systems may be implemented for worker protection.

Inspection and Testing of K403 Powder

To ensure the K403 nickel alloy powder conforms to specifications, various tests and inspections should be performed:

• 화학 성분?- Verify composition of major alloying elements using optical emission or X-ray fluorescence spectroscopy.
• 입자크기 분포?- Assess particle size range as per ASTM B822 standard using laser diffraction.
• 형태학?- Inspect particle shape and surface defects under SEM. Check for satellites, porosity.
• 유량?- Evaluate flowability and apparent density as per ASTM B213 using Hall flowmeter.
• 불순물?- Measure oxygen and nitrogen content using inert gas fusion analysis. Minimize impurities.
• 미세구조?- Check phases present using X-ray diffraction analysis.
• 기계적 특성?- Perform tensile and hardness testing for powder metallurgy parts.

Qualification and batch testing ensures consistent powder quality and performance.

Comparison of K403 Powder with IN738 Powder

K403 and IN738 are two alloy powders used for high temperature applications:

파라미터	K403 Powder	IN738 Powder
컴포지션	Ni-Cr-Fe-Mo	Ni-Cr-Co-Al-Ti
산화 저항	1150¡«C까지 우수함	Very Good up to 1100¡«C
비용	높은	더 낮게
상 안정성	아주 좋아요	가난
기계적 강도	High up to 1050¡«C	Good up to 750¡«C
Fabrication	중간	쉽게
신청	열분사, 용접 (Thermal spray, welding)	Turbine components, AM parts
가용성	보통	쉽게 사용 가능

 

For extreme temperatures exceeding 1100¡«C requiring phase stability, K403 is preferred despite higher cost. IN738 offers easier fabrication and lower cost.

FAQ

Q: What is nickel-based K403 powder used for?

A: K403 powder is designed for high temperature applications like thermal spray coatings, brazing, welding, additive manufacturing where oxidation and corrosion resistance up to 1150¡«C is required.

Q: What particle size is used for thermal spraying K403 powder?

A: Coarser K403 powder up to 150 microns is commonly used for thermal spray processes like wire arc spraying to maximize deposition efficiency and coating thickness.

Q: Is K403 suitable for laser powder bed fusion additive manufacturing?

A: Yes, fine K403 powder can be used in selective laser melting machines to fabricate complex geometry parts that perform well in high temperature environments.

Q: How does K403 compare with Haynes 214 alloy?

A: K403 has slightly better high temperature strength and oxidation resistance than Haynes 214. But Haynes 214 offers excellent fabrication characteristics and lower cost.

Q: What are the main health hazards of K403 powder?

A: Fine K403 powder poses dust explosion risks. It can also irritate skin and eyes. Inhalation must be prevented. Use proper protective equipment when handling K403 powder.

Q: Where can I purchase K403 powder for high temperature brazing application?

A: Leading suppliers like Sandvik, Carpenter Powder Products, Praxair Supply carry K403 nickel alloy powder suitable for high temperature brazing. Consider recommended particle size and purity levels based on your specific application.