FeCoNiCrMo Powder
FeCoNiCrMo powder is a complex alloy powder consisting of iron (Fe), cobalt (Co), nickel (Ni), chromium (Cr), and molybdenum (Mo). These elements work synergistically to create a powder with remarkable characteristics suitable for numerous applications.
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Overview of FeCoNiCrMo Powder
FeCoNiCrMo belongs to a class of high temperature alloys exhibiting good mechanical properties, microstructural stability and environmental resistance at temperatures exceeding 750°C. Iron and cobalt provide strength. Nickel enhances ductility and toughness. Chromium imparts oxidation and corrosion resistance. Molybdenum further improves high temperature strength and creep resistance.
Key characteristics of FeCoNiCrMo powder include:
- Excellent high temperature strength and creep resistance
- Good fatigue strength and toughness
- High hardness, wear resistance, and abrasion resistance
- Outstanding corrosion and oxidation resistance
- Available in various particle size distributions and morphologies
FeCoNiCrMo powder is designed for protective coatings, thermal spray, welding, additive manufacturing and other demanding high temperature applications.
Composition of FeCoNiCrMo Powder
FeCoNiCrMo powder has the following nominal composition:
Element | Sammansättning |
---|---|
Järn (Fe) | Balans |
Kobolt (Co) | 35-50% |
Nickel (Ni) | 10-30% |
Krom (Cr) | 8-12% |
Molybden (Mo) | 1-3% |
Kol (C) | <0.5% |
Kisel (Si) | <1.5% |
Mangan (Mn) | <1% |
The levels of alloying elements can be adjusted to optimize mechanical properties and environmental resistance based on application requirements. Impurities are minimized.
Properties of FeCoNiCrMo Powder
Key properties of FeCoNiCrMo powder include:
Fastighet | Värde |
---|---|
Täthet | 8.0-8.5 g/cm3 |
Smältpunkt | 1350-1450°C |
Termisk konduktivitet | 15-30 W/mK |
Elektrisk resistivitet | 70-85 μΩ.cm |
Young's modul | 190-220 GPa |
Poissonförhållande | 0.28-0.32 |
Draghållfasthet | 650-1200 MPa |
Utbyteshållfasthet | 450-900 MPa |
Töjning | 15-30% |
Hårdhet | 30-50 HRC |
The properties like high temperature strength, hardness, wear resistance, and corrosion resistance make it suitable for the most demanding applications.
Production Method for FeCoNiCrMo Powder
FeCoNiCrMo powder can be produced via:
- Atomisering av gas – High pressure inert gas used to atomize molten alloy resulting in fine spherical powder ideal for AM.
- Atomisering av vatten – High velocity water jet breaks up molten metal into fine irregular powder particles. Economical but higher oxygen pickup.
- Mekanisk legering – Ball milling of blended elemental powders followed by sintering and secondary atomization.
Gas atomization provides the best control over particle characteristics like size, shape, purity and microstructure.
Applications of FeCoNiCrMo Powder
Typical applications of FeCoNiCrMo powder include:
- Beläggningar för termisk sprutning – HVOF or plasma spraying to deposit thick wear and corrosion resistant coatings on valves, seals, bearings etc. operating at high temperatures.
- Additiv tillverkning – Selective laser melting to produce complex components like turbine blades for extreme environments.
- Fyllmedel för svetsning – Provides excellent elevated temperature strength, hardness and corrosion resistance in the weld zone.
- Brazing Filler – Used to join components operating at very high temperatures requiring oxidation resistance.
- Glass Processing – Powder metallurgy conveyor rolls with high temperature strength used in glass melting furnaces.
Specifications of FeCoNiCrMo Powder
FeCoNiCrMo powder is available under various size ranges, shapes, grades and purity levels:
- Partikelstorlek: From 15-45 μm for AM methods, up to 150 μm for thermal spray processes.
- Morfologi: Spherical, irregular and blended shapes. Spherical powder provides optimal flow and packing.
- Renhet: From commercial to ultra high purity levels based on stringent chemical analysis and application requirements.
- Ytarea: Low surface area preferred to minimize oxidation during handling and storage.
- Betyg: Customized composition and powder characteristics tailored for application and processing method.
Global Suppliers of FeCoNiCrMo Powder
Some of the major global suppliers of FeCoNiCrMo powder include:
- Sandvik Osprey (Storbritannien)
- Erasteel (France)
- Tekna (Kanada)
- Edgetech Industries (USA)
- CNPC Pulver (Kina)
- Hoganas (Sweden)
- AMETEK (US)
These companies produce various grades of FeCoNiCrMo powder using gas atomization, water atomization, mechanical alloying and other techniques tailored for specific applications.
Pricing of FeCoNiCrMo Powder
FeCoNiCrMo powder prices depend on factors like:
- Composition, purity levels
- Partikelstorleksfördelning och morfologi
- Produktionsmetod
- Orderkvantitet
- Manufacturer and geographical location
Betyg | Prisintervall |
---|---|
Kommersiell | $80-120 per kg |
Hög renhet | $120-250 per kg |
Ultrafin | $250-450 per kg |
Särskild klass | $450-850 per kg |
Gas atomized, controlled particle size, high purity powders command much higher pricing compared to commercial grades of powder.
Storage and Handling of FeCoNiCrMo Powder
FeCoNiCrMo powder requires careful storage and handling:
- Should be stored in sealed containers under inert gas to prevent oxidation
- Avoid accumulation of fine powder to minimize explosion risks
- Use proper PPE, ventilation, grounding and safety practices during handling
- Prevent contact between powder and incompatible materials
- Follow applicable safety guidelines from supplier SDS
Proper protective measures are essential when handling this reactive alloy powder.
Inspection and Testing of FeCoNiCrMo Powder
Key quality control tests performed on FeCoNiCrMo powder:
- Chemical analysis using OES or XRF to ensure composition is within specified limits
- Particle size distribution using laser diffraction as per ASTM B822 standard
- Morphology analysis through SEM imaging
- Powder flow rate measurement as per ASTM B213 standard
- Densitetsbestämning med heliumpyknometri
- Impurity testing using ICP-MS
- Microstructural characterization by X-ray diffraction
Thorough testing verifies powder quality and consistency for the intended high temperature application.
Comparison Between FeCoNiCrMo and 316L Stainless Steel Powders
FeCoNiCrMo and 316L stainless steel powders compared:
Parameter | FeCoNiCrMo | 316L SS |
---|---|---|
Sammansättning | High-temp quinary alloy | Fe-Cr-Ni stainless alloy |
Kostnad | Högre | Lägre |
High temperature strength | Far superior | Måttlig |
Korrosionsbeständighet | Comparable | Better |
Termisk ledningsförmåga | Högre | Lägre |
Användbarhet | Måttlig | Utmärkt |
Tillämpningar | Thermal spray, AM | Automotive, construction |
FeCoNiCrMo offers much better high temperature strength whereas 316L provides good fabrication characteristics and corrosion resistance at lower cost.
FeCoNiCrMo Powder FAQs
Q: How is FeCoNiCrMo powder produced?
A: FeCoNiCrMo powder is commercially produced using gas atomization, water atomization and mechanical alloying followed by sintering. Gas atomization offers the best powder characteristics.
Q: What are the main applications for FeCoNiCrMo powder?
A: Main applications include thermal spray coatings, additive manufacturing, brazing filler material, powder metallurgy hot work tooling, glass processing equipment where high temperature strength and resistance is required.
Q: What is the recommended particle size for thermal spraying?
A: For most thermal spray processes, a particle size range of 45-150 microns is preferred for FeCoNiCrMo powder to maximize deposition efficiency and coating properties.
Q: Does FeCoNiCrMo powder require special handling precautions?
A: Yes, proper protective measures are essential when handling this reactive fine alloy powder including inert atmosphere, grounding, ventilation, PPE.
Q: Where can I purchase FeCoNiCrMo powder suitable for additive manufacturing?
A: For AM applications requiring high temperature strength, fine FeCoNiCrMo powder can be purchased from leading manufacturers including Sandvik, Erasteel, Tekna, and Edgetech Industries.
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