GH4169 Prášek pro aditivní výrobu

Prášek GH4169 je precipitačně vytvrzovaný prášek z nerezové oceli navržený tak, aby poskytoval vysokou pevnost, tvrdost a odolnost proti korozi po tepelném zpracování. Obsahuje chrom 17% spolu s přísadami niklu, hliníku, titanu a niobu pro lepší mechanické a korozní vlastnosti.

Key characteristics of GH4169 powder:

GH4169 Powder Properties

Vlastnosti	Podrobnosti
Složení	Fe-17Cr-4Ni-1.5Ti-0.7Al-0.25Nb alloy
Hustota	7,9 g/cc
Tvar částic	Nepravidelné, hranaté
Rozsah velikostí	10-150 mikronů
Zdánlivá hustota	Až 50% skutečné hustoty
Tekutost	Mírný
Síla	Very high after aging treatment
Odolnost proti korozi	Excellent, including marine environments

GH4169’s exceptional strength-to-weight ratio combined with outstanding corrosion resistance make it suitable for critical structural parts across aerospace, marine, nuclear and other demanding applications.

GH4169 Powder Composition

Typical composition of GH4169 precipitation hardening stainless steel:

GH4169 Powder Composition

Živel	Hmotnost %
železo (Fe)	Zůstatek
Chrom (Cr)	16-18%
nikl (Ni)	3.5-5.5%
titan (Ti)	1.2-1.8%
hliník (Al)	0.3-1.2%
niob (Nb)	0.15-0.45%
uhlík (C)	0.04% max
Silicon (Si), Manganese (Mn)	1% max each

• Iron provides the ferritic matrix
• Chromium improves corrosion and oxidation resistance
• Nickel, aluminum, titanium and niobium facilitate precipitation hardening
• Carbon and other elements limited as tramp impurities

The composition is designed to maximize the precipitation hardening response and corrosion resistance required in structural applications.

GH4169 Powder Physical Properties

GH4169 Powder Physical Properties

Vlastnictví	Hodnoty
Hustota	7,9 g/cc
Bod tání	1400-1450°C
Elektrický odpor	0.80 μΩ-m
Tepelná vodivost	12 W/mK
Thermal expansion	12 x 10^-6 /K
Maximální provozní teplota	650°C

• Vysoký poměr pevnosti a hmotnosti
• Retains strength and hardness up to 650°C
• Relatively low thermal conductivity
• Resistivity increases after precipitation hardening
• Moderate expansion coefficient

The properties allow use of GH4169 in load bearing structural applications requiring corrosion resistance and high temperature strength.

GH4169 Powder Mechanical Properties

GH4169 Powder Mechanical Properties

Vlastnictví	Stav	Hodnoty
Tvrdost	Solution annealed	90 HRB
Tvrdost	Peak aged	40-45 HRC
Pevnost v tahu	Žíhané	550-750 MPa
Pevnost v tahu	Peak aged	1300-1600 MPa
Pevnost v tahu	Peak aged	1100-1400 MPa
Prodloužení	Peak aged	8-13%

• Ages to high strength levels exceeding other precipitation hardening stainless steels
• Retains good ductility in peak aged condition
• Significant increase in hardness after aging treatment
• Strength can be tailored through aging time and temperature

These properties make GH4169 suitable for lightweight, high strength structural parts needing corrosion resistance.

GH4169 Powder Applications

Typical applications for GH4169 precipitation hardening stainless steel powder include:

GH4169 Powder Applications

Průmysl	Příklad použití
Aerospace	Airframe and engine components, fasteners
Námořní	Shafts, fixtures, solenoids, valves
Jaderné	Fuel element cladding, internal structures
Ropa a plyn	Structural parts for wellheads, offshore platforms
Chemické	Process equipment like vessels and pipes

Some specific uses:

• Bolts, nuts, screws, and studs needing high strength
• Critical rotating shaft components
• Valve and pump bodies used in corrosive environments
• Mixing equipment like impellers and agitators
• Nuclear fuel element cladding and vessel internals

GH4169 provides an exceptional combination of strength, hardness and corrosion resistance required in critical structural parts across demanding industries.

GH4169 Powder Specifications

Key specifications for GH4169 powder include:

GH4169 Powder Standards

Standard	Popis
AMS 5922	Precipitation hardening stainless steel powder for aerospace parts
ASTM A580	Standard for precipitation hardening stainless steel wire
ASTM A638	Standard for precipitation hardening iron-based superalloys
AMS 5898	Bars, forgings, rings of precipitation hardening stainless steels

Ty definují:

• Chemical composition of GH4169 alloy
• Permissible impurities like C, S and P
• Required mechanical properties in different conditions
• Approved powder production methods
• Protokoly o testování shody
• Quality assurance requirements

Powder produced to these standards ensures optimal aging response, ductility, and corrosion resistance.

GH4169 Powder Particle Sizes

GH4169 Powder Particle Size Distribution

Velikost částic	Charakteristika
10-22 microns	Ultrafine grade for high density
22-75 microns	Most commonly used size range
75-150 microns	Coarser sizes for improved flowability

• Finer particles promote higher sintered density
• Coarser particles improve powder flow into die cavities
• Gas atomization and water atomization both used
• Size distribution tailored to final part properties needed

Controlling particle size distribution optimizes pressing behavior, final density, and mechanical performance.

GH4169 Powder Apparent Density

GH4169 Powder Apparent Density

Zdánlivá hustota	Podrobnosti
Až 50% skutečné hustoty	Pro nepravidelnou morfologii prášku
4.5-5.5 g/cc	Higher for spherical powders

• Spherical powders provide higher apparent density
• Irregular particles have density around 45%
• Vyšší zdánlivá hustota zlepšuje tok a stlačitelnost prášku.
• Allows higher green density after compaction

Higher powder apparent density leads to better manufacturing productivity and part performance.

GH4169 Powder Production Method

GH4169 Powder Production

Metoda	Podrobnosti
Rozprašování plynu	High pressure inert gas breaks up molten metal stream into fine droplets
Rozprašování vody	Vysokotlaký vodní paprsek rozbíjí kov na jemné částice
Vakuové indukční tavení	Vstupní materiály vysoké čistoty tavené ve vakuu
Vícenásobné přetavení	Improves chemical homogeneity
Sítování	Třídí prášek do různých velikostí částic

• Gas atomization provides spherical powder shape
• Water atomization is lower cost but irregular particles
• Vacuum processing minimizes gaseous impurities
• Post-processing allows particle size control

Fully automated methods combined with strict quality control ensure reliable and consistent powder suitable for critical applications.

GH4169 Powder Pricing

GH4169 Powder Pricing

Faktor	Dopad na cenu
Powder grade	Vyšší čistota zvyšuje náklady
Velikost a tvar částic	Fine spherical powder most expensive
Objednané množství	Price decreases with larger volumes
Další zpracování	Services like sieving adds cost
Testing requirements	More rigorous testing increases cost

Orientační ceny

• Irregular GH4169 powder: $18-24 per kg
• Spherical GH4169 powder: $22-30 per kg
• Large volume pricing can be 25-35% lower

Pricing depends on purity level, powder characteristics, order volume and additional processing required.

GH4169 Powder Suppliers

GH4169 Powder Suppliers

Společnost	Umístění
Přísada pro tesaře	USA
Erasteel	USA, Evropa
Sandvik Osprey	Spojené království
Aubert & Duval	Francie
Skupina CNPC Powder	Čína
Jingdong New Material	Čína

Selection factors include:

• Powder grades produced
• Production capacity and lead times
• Powder quality and consistency
• Testing capability and reporting
• Ceny a minimální objednací množství
• Experience serving targeted industries

GH4169 Powder Handling and Storage

GH4169 Powder Handling

Doporučení	Důvod
Ensure proper ventilation	Prevent exposure to fine metallic particles
Vyhněte se zdrojům vznícení	Prášek může v kyslíkové atmosféře hořet
Follow safe protocols	Reduce health and fire hazards
Používejte nejiskřící nástroje	Prevent possibility of ignition
Store sealed containers	Zabránit kontaminaci nebo oxidaci

Doporučení pro ukládání

• Store in stable containers in a dry, cool area
• Limit exposure to moisture and acids
• Maintain temperatures below 30°C

With proper precautions during handling and storage, GH4169 powder remains stable and safe to work with.

GH4169 Powder Inspection and Testing

GH4169 Powder Testing

Test	Podrobnosti
Chemická analýza	ICP a XRF ověřují složení
Particle size analysis	Determines particle size distribution
Zdánlivá hustota	Measured as per ASTM B212 standard
Morfologie prášku	Zobrazení tvaru částic pomocí SEM
Flow rate testing	Gravity flow rate through specified funnel
Ztráta při zapálení	Determines moisture content

Testing ensures the powder meets the required composition, particle characteristics, density specifications, morphology and flow rate as per applicable standards.

GH4169 Powder Pros and Cons

Advantages of GH4169 Powder

• Exceptional strength after precipitation hardening
• Retains good ductility in peak aged condition
• Excellent corrosion resistance including marine environments
• High strength maintained up to 650°C
• Good combinations of properties for critical structural parts
• More cost-effective than superalloys

Limitations of GH4169 Powder

• Requires careful heat treatment for optimal properties
• Lower fracture toughness than austenitic steels
• Subject to sensitization during improper welding
• Limited cold heading and forming capability
• Strength and corrosion resistance not as high as superalloys
• Price higher than common stainless steel grades

Comparison With 17-4PH and 15-5PH Powder

GH4169 vs. 17-4PH and 15-5PH Powder

Parametr	GH4169	17-4PH	15-5 PH
Hustota	7,9 g/cc	7,7 g/cc	7,8 g/cc
Tvrdost	40-45 HRC	38-45 HRC	36-42 HRC
Pevnost v tahu	1300-1600 MPa	1200-1450 MPa	1050-1400 MPa
Odolnost proti korozi	Vynikající	Velmi dobré	Dobrý
Náklady	Vysoký	Mírný	Nízký

• GH4169 has highest strength after aging treatment
• It also provides the best corrosion resistance
• 17-4PH is moderately stronger than 15-5PH
• 15-5PH is the most economical of the three
• GH4169 preferred for critical structural applications

GH4169 Powder FAQs

Q: What are the main applications of GH4169 precipitation hardening stainless steel powder?

A: Main applications include aerospace structures, marine components like shafts and valves, nuclear fuel element cladding, oil and gas wellhead parts, chemical process equipment, and other structural parts needing high strength and corrosion resistance.

Q: What is the role of aluminum and titanium in GH4169 composition?

A: Aluminum and titanium facilitate precipitation hardening by forming fine coherent precipitates during aging treatment. This imparts substantial strengthening while retaining reasonable ductility.

Q: What precautions are needed when working with GH4169 powder?

A: Recommended precautions include ventilation, avoiding ignition sources, using non-sparking tools, protective gear, following safe protocols, and storing sealed containers away from contaminants or moisture.

Q: How does GH4169 differ from martensitic and ferritic stainless steel grades?

A: GH4169 can be aged to much higher strength levels compared to martensitic or ferritic grades. It also provides excellent corrosion resistance including in marine environments, unlike martensitic grades.