310 Pulver

Overview of 310 Powder

310 powder is an austenitic stainless steel powder containing high levels of chromium, nickel and nitrogen for enhanced mechanical properties and corrosion resistance. It offers an excellent combination of strength, hardness, toughness and wear resistance.

Key properties and advantages of 310 powder include:

310 Powder Properties and Characteristics

Fastigheter	Detaljer
Sammansättning	Fe-25Cr-20Ni-0.25N alloy
Täthet	8,1 g/cc
Partikelns form	Oregelbunden, kantig
Storleksintervall	10-150 microns
Skenbar densitet	Upp till 50% av verklig densitet
Flytbarhet	Måttlig
Styrka	Very high for a 300 series powder
Wear resistance	Excellent due to work hardening

310 powder is widely used in applications requiring hardness, wear resistance, and corrosion resistance like valve parts, shafts, bearing cages, fasteners, surgical instruments etc.

310 Powder Composition

Typical composition of 310 stainless steel powder:

310 Powder Composition

Element	Vikt %
Järn (Fe)	Balans
Krom (Cr)	24-26%
Nickel (Ni)	19-22%
Kväve (N)	0.2-0.4%
Kol (C)	0,25% max
Kisel (Si)	1.5% max
Mangan (Mn)	2% max
Svavel (S)	0.03% max
Fosfor (P)	0.045% max

• Iron provides the ferritic matrix and ductility
• Chromium and nickel enhance corrosion resistance
• Nitrogen provides solid solution strengthening
• Carbon, silicon, manganese controlled as tramp elements

The optimized composition provides an excellent combination of strength, hardness, corrosion resistance, and cost.

310 Powder Physical Properties

310 Powder Physical Properties

Fastighet	Värden
Täthet	8,1 g/cc
Smältpunkt	1370-1400°C
Elektrisk resistivitet	0.8 μΩ-m
Termisk ledningsförmåga	12 W/mK
Termisk expansion	11 x 10^-6 /K
Maximal driftstemperatur	1150°C

• High density compared to ferritic stainless steels
• Maintains excellent strength at elevated temperatures
• Resistivity higher than pure iron or carbon steels
• Lower thermal conductivity than carbon steel
• Can withstand continuous service up to 1150°C

The physical properties make 310 suitable for high temperature applications requiring hardness, strength and corrosion resistance.

310 Powder Mechanical Properties

310 Powder Mechanical Properties

Fastighet	Värden
Draghållfasthet	760-900 MPa
Sträckgräns	450-550 MPa
Töjning	35-40%
Hårdhet	32-38 HRC
Slaghållfasthet	50-100 J
Elasticitetsmodul	190-210 GPa

• Very high strength for 300 series stainless steel
• Excellent hardness and wear resistance
• High toughness and impact strength
• Strength can be further increased through cold working
• Cold working also significantly enhances hardness

The properties provide an excellent combination of strength, hardness and toughness required in many wear resistant applications.

310 Powder Applications

Typical applications of 310 stainless steel powder include:

310 Powder Applications

Industri	Exempel på användningsområden
Petrochemical	Valves, pumps, shafts
Food processing	Extruder screws, blades
Fordon	Gears, shafts, fasteners
Tillverkning	Press tooling, bearing cages
Medicinsk	Surgical instruments, implants

Vissa specifika produktanvändningar:

• High strength fasteners, bolts, nuts
• Pump and valve components like seals, shafts
• Food processing extruder screws and blades
• High hardness press tooling and molds
• Mixing equipment, impellers requiring wear resistance

Its excellent combination of properties make 310 widely used for specialized applications across industries.

310 Powder Specifications

Relevant specifications and standards:

310 Powder Standards

Standard	Beskrivning
ASTM A276	Standard specification for stainless steel bars and shapes
ASTM A314	Standard for stainless steel bent pipe and tubing
ASME SA-479	Specification for stainless steel tubing
AMS 5517	Annealed corrosion resistant steel bar, wire, forgings
AMS 5903	Precipitation hardening stainless steel bar, wire, forgings

Dessa standarder definierar:

• Chemical composition limits of 310 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.

310 Powder Particle Sizes

310 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.

310 Powder Apparent Density

310 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 powders
• High apparent density improves press filling efficiency

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

310 Powder Production Method

310 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.

310 Powder Pricing

310 Powder Pricing

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

Indikativ prissättning

• Irregular 310 powder: $8-12 per kg
• Spherical 310 powder: $12-18 per kg
• Large volume pricing can be 30-50% lower

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

310 Powder Suppliers

310 Powder Suppliers

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

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

310 Powder Handling and Storage

310 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 310 powder is flammable, ignition and explosion risks should be controlled during handling and storage. Otherwise it is relatively safe with proper precautions.

310 Powder Inspection and Testing

310 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.

310 Powder Pros and Cons

Advantages of 310 Powder

• Excellent strength and hardness for stainless steel powder
• Hållfasthet och korrosionsbeständighet vid höga temperaturer
• Good ductility, toughness and weldability
• Excellent wear and abrasion resistance
• Readily work hardens significantly
• More cost-effective than high nickel or exotic alloys

Disadvantages of 310 Powder

• Lower ductility than austenitic grades in annealed state
• Lower pitting corrosion resistance than 316 grade
• Requires care during welding to avoid sensitization
• Begränsad kapacitet för kallbearbetning och formning
• Susceptible to sigma phase embrittlement at high temperatures
• Surface discoloration over time in some environments

Comparison With 316L Powder

310 vs 316L Stainless Steel Powder

Parameter	310	316L
Täthet	8,1 g/cc	8.0 g/cc
Styrka	760-900 MPa	485-550 MPa
Hårdhet	32-38 HRC	79-95 HRB
Korrosionsbeständighet	Mycket bra	Utmärkt
Kostnad	Låg	Hög
Användningsområden	Wear parts, tools	Chemical plants, marine

• 310 has far higher strength and hardness
• 316L provides better overall corrosion resistance
• 310 is more cost-effective than 316L
• 310 suited for applications needing hardness and wear resistance
• 316L preferred where corrosion is the primary concern

310 Powder FAQs

Q: What are the main applications of 310 stainless steel powder?

A: Main applications include high-strength fasteners, pump and valve components, extruder screws, press tooling, bearing cages, shafts, and surgical instruments requiring hardness, strength and wear resistance.

Q: What is nitrogen’s role in 310 stainless steel?

A: Nitrogen provides substantial solid solution strengthening which significantly increases the strength and hardness of 310 stainless steel.

Q: What precautions are needed when working with 310 powder?

A: Recommended precautions include ventilation, inert atmosphere, grounding, avoiding ignition sources, protective gear, using non-sparking tools, and safe storage in stable containers.

Q: How does 310 stainless steel differ from 304 and 316 grades?

A: 310 has much higher strength and hardness than 304 or 316 due to its high nitrogen content. It offers better wear resistance but lower corrosion resistance than 316.