317L pulver

Overview of 317L Powder

317L powder is an austenitic stainless steel powder containing 18% chromium, 3% molybdenum, and 0.08% carbon. It offers an excellent combination of corrosion resistance, strength, weldability and cost.

Key properties and advantages of 317L powder include:

317L Powder Properties and Characteristics

Fastigheter	Detaljer
Sammansättning	Fe-18Cr-3Mo-0.08C alloy
Täthet	8.0 g/cc
Partikelns form	Oregelbunden, kantig
Storleksintervall	10-150 microns
Skenbar densitet	Upp till 50% av verklig densitet
Flytbarhet	Måttlig
Korrosionsbeständighet	Excellent in many environments
Strengthening	Cold working and solid solution strengthening

317L powder is widely used in chemical processing, marine applications, pulp and paper industry, nuclear power generation, and architectural features needing weathering resistance.

317L Powder Composition

Typical composition of 317L stainless steel powder:

317L Powder Composition

Element	Vikt %
Järn (Fe)	Balans
Krom (Cr)	17-19%
Nickel (Ni)	11-15%
Molybden (Mo)	2.5-3.5%
Mangan (Mn)	<2%
Kol (C)	0.08% max
Kisel (Si)	1% max
Kväve (N)	0,10% max
Svavel (S)	0.03% max

• Iron provides the ferritic matrix and ductility
• Chromium enhances corrosion and oxidation resistance
• Nickel stabilizes the austenitic structure
• Molybdenum further improves pitting resistance
• Carbon, nitrogen and sulfur controlled as tramp elements

The composition provides an excellent balance of corrosion resistance, formability, weldability and cost.

317L Powder Physical Properties

317L Powder Physical Properties

Fastighet	Värden
Täthet	8.0 g/cc
Smältpunkt	1370-1400°C
Elektrisk resistivitet	0.8 μΩ-m
Termisk ledningsförmåga	16 W/mK
Termisk expansion	16 x 10^-6 /K
Maximal driftstemperatur	900°C

• High density compared to ferritic stainless steels
• Maintains strength and corrosion resistance at elevated temperatures
• Resistivity higher than pure iron or carbon steels
• Lower thermal conductivity than carbon steel
• Can withstand continuous service up to 900°C

The physical properties make 317L suitable for high temperature applications requiring corrosion resistance.

317L Powder Mechanical Properties

317L Powder Mechanical Properties

Fastighet	Värden
Draghållfasthet	515-620 MPa
Sträckgräns	205-275 MPa
Töjning	40-50%
Hårdhet	88-95 HRB
Slaghållfasthet	100-150 J
Elasticitetsmodul	190-210 GPa

• Excellent combination of strength and ductility
• Can be work hardened significantly to increase strength
• Very high toughness and impact strength
• Strength can be further improved through cold working
• Hardness is relatively low in annealed condition

The properties provide an excellent balance of strength, ductility and toughness required for many corrosive environments.

317L Powder Applications

Typical applications of 317L stainless steel powder include:

317L Powder Applications

Industri	Exempel på användningsområden
Kemisk	Tanks, valves, pipes, pumps
Petrochemical	Process equipment, tubing, valves
Marin	Propeller shafts, fasteners, deck hardware
Nuclear	Reactor vessels, fuel element cladding
Architectural	Railings, wall panels, roofing

Vissa specifika produktanvändningar:

• Pollution control equipment handling hot acids
• Nuclear reactor internal structures
• Marine propeller shafts, deck fittings
• Pulp and paper industry piping, valves
• Architectural paneling, roofing, cladding

Its excellent corrosion resistance combined with good manufacturability make 317L widely used across demanding industries.

317L Powder Specifications

Relevant specifications and standards:

317L Powder Standards

Standard	Beskrivning
ASTM A276	Standard for stainless steel bars and shapes
ASTM A479	Standard for stainless steel tubing
AMS 5524	Annealed stainless steel bar, wire, forgings
ASME SA-276	Specification for stainless steel bars and shapes
AISI 630	Standard for 17Cr-4Ni precipitation hardening stainless steel

Dessa standarder definierar:

• Chemical composition limits of 317L alloy
• Permissible impurity levels like S, P
• Nödvändiga mekaniska egenskaper
• Approved production methods
• Protokoll för test av efterlevnad
• Proper packaging, labeling and documentation

Meeting certification requirements ensures suitability of the powder for the intended applications.

317L Powder Particle Sizes

317L Powder Particle Size Distribution

Partikelstorlek	Egenskaper
10-45 microns	Ultrafine grade for high density and surface finish
45-150 mikrometer	Coarse grade provides good flowability
15-150 mikrometer	Standard grade for pressing and sintering

• Finer particles allow greater densification during sintering
• Coarser powder flows better and fills die cavities uniformly
• Size range is tailored based on final part properties needed
• Both gas and water atomized powders are available

Controlling particle size distribution allows optimizing processing behavior and final part performance.

317L Powder Apparent Density

317L Powder Apparent Density

Skenbar densitet	Detaljer
Upp till 50% av verklig densitet	För oregelbunden pulvermorfologi
4.5-5.5 g/cc typical	Förbättras med högre packningstäthet

• Högre skenbar densitet förbättrar pulverflöde och kompressibilitet
• Oregelbunden morfologi begränsar maximal packningstäthet
• Values up to 60% are possible with spherical powder
• High apparent density improves press filling efficiency

Higher apparent density leads to better manufacturing productivity and part quality.

317L Powder Production Method

317L Powder Production

Metod	Detaljer
Atomisering av gas	High pressure inert gas breaks molten metal stream into fine droplets
Water atomization	High pressure water jet breaks metal into fine particles
Induktionssmältning i vakuum	Insatsmaterial med hög renhet som smälts under vakuum
Flera omsmältningar	Improves chemical homogenization
Siktning	Classifies powder into different particle size ranges

• Gas atomization provides clean, spherical powder morphology
• Water atomization is a lower cost process with irregular particles
• Vacuum melting and remelting minimizes gaseous impurities
• Post-processing allows customization of particle sizes

Automated production and stringent quality control result in consistent powder suitable for critical applications.

317L Powder Pricing

317L Powder Pricing

Faktor	Påverkan på priset
Renhetsgrad	Högre renhet ökar kostnaden
Morfologi för pulver	Spherical powder costs more than irregular
Partikelstorlek	Ultrafint pulver dyrare
Ordervolym	Larger quantities have lower per unit pricing
Additional services	Customization adds cost

Indikativ prissättning

• Irregular 317L powder: $6-10 per kg
• Spherical 317L powder: $10-15 per kg
• Large volume pricing can be 30-50% lower

Pricing depends on purity, particle characteristics, order volume, and customization needs.

317L Powder Suppliers

317L Powder Suppliers

Företag	Plats
Höganäs	Sverige
Sandvik	Tyskland
CNPC Pulver	Kina
Carpenter Powder Products	USA
Erasteel	Frankrike
Daido Steel	Japan

Key supplier selection factors:

• Powder grades offered
• Production capacity
• Particle morphology and size ranges
• Batch analysis reports
• Pricing and minimum order quantity
• Customization services
• Delivery times and reliability

317L Powder Handling and Storage

317L Powder Handling

Rekommendation	Anledning
Use PPE and ventilation	Undvik exponering för fina metallpartiklar
Ensure proper grounding	Prevent static discharge while handling
Undvik antändningskällor	Pulver kan antändas i syrehaltig atmosfär
Använd verktyg som inte slår gnistor	Förhindra risken för antändning
Follow safety protocols	Reduce risk of burns, inhalation, ingestion
Store in stable containers	Förhindrar kontaminering eller oxidation

As 317L powder is flammable, ignition and explosion risks should be controlled during handling and storage. Otherwise it is relatively safe with proper precautions.

317L Powder Inspection and Testing

317L Powder Testing

Test	Detaljer
Kemisk analys	ICP and XRF verify composition
Fördelning av partikelstorlek	Laser diffraction determines size distribution
Skenbar densitet	Hall-flödesmätartest enligt ASTM B212-standarden
Morfologi för pulver	SEM imaging shows particle shape
Analys av flödeshastighet	Gravitationsflöde genom specificerat munstycke
Loss on ignition	Determines residual moisture content

Stringent testing ensures the powder meets the required chemical purity, particle characteristics, density, morphology, and flowability per applicable specifications.

317L Powder Pros and Cons

Advantages of 317L Powder

• Excellent corrosion resistance in many environments
• High temperature strength and oxidation resistance
• Good ductility, toughness and weldability
• More cost-effective than high nickel austenitic grades
• Readily formable using conventional techniques
• Can be work hardened through cold/warm working

Disadvantages of 317L Powder

• Lower high temperature creep strength than some ferritic grades
• Lower hardness and wear resistance than martensitic grades
• Susceptible to chloride stress corrosion cracking
• Requires post weld annealing to prevent sensitization
• Begränsad kapacitet för kallbearbetning och formning
• Surface discoloration over time in outdoor exposure

Comparison With 316L Powder

317L vs 316L Stainless Steel Powder

Parameter	317L	316L
Täthet	8.0 g/cc	8.0 g/cc
Styrka	515-620 MPa	485-550 MPa
Korrosionsbeständighet	Utmärkt	Utestående
Pitting resistance	Mycket bra	Utmärkt
Kostnad	Låg	Hög
Användningsområden	Process industry, marine	Chemical, pharmaceutical

• 317L provides higher strength at lower cost
• 316L offers better pitting corrosion resistance
• 317L has good chloride stress corrosion resistance
• 316L preferred for ultra-corrosive environments
• 317L suited for marine applications and nuclear industry

317L Powder FAQs

Q: What are the main applications of 317L stainless steel powder?

A: Main applications include chemical processing, petrochemical, marine, nuclear, pulp & paper, and architectural. It is used for equipment like tanks, valves, pipes, pumps, shafts, and cladding.

Q: What precautions should be taken when handling 317L powder?

A: Recommended precautions include ventilation, grounding, avoiding ignition sources, using non-sparking tools, protective gear, safe storage, and controlling dust exposure.

Q: How does molybdenum improve the corrosion resistance of 317L?

A: Molybdenum enhances pitting and crevice corrosion resistance in chloride environments. It stabilizes the passive film protecting the surface.

Q: What is the main difference between 304L and 317L stainless steel powder?

A: 317L contains 3% molybdenum giving it significantly better corrosion resistance compared to 304L, especially in marine and other chloride environments.