17-4PH Frasaíocht Hardening Cruach Dhosmálta

1. Tabhairt isteach

17-4PH stainless steel is renowned for its impressive combination of high strength, marthanacht, agus friotaíocht creimthe, making it a valuable asset in demanding industries like aerospace, míochaine, gluaisteán, agus ola agus gás.

This unique alloy, capable of withstanding both harsh environments and stress, has become a top choice for engineers and manufacturers.

San alt seo, we’ll dive deep into the properties, sochar, feidhmithe, and practical considerations for 17-4PH stainless steel.

Faoin deireadh, you’ll understand why this alloy is one of the most versatile materials in modern manufacturing.

2. What is 17-4PH Precipitation Hardening Stainless Steel?

17-4cruach dhosmálta PH, also known as UNS S17400, is a martensitic, precipitation-hardening alloy.

Unlike traditional stainless steel, it achieves its strength and hardness through a unique aging process, which enhances its durability and resilience under stress.

Anailís cheimiceach

Ualach % (all values are maximum unless a range is otherwise indicated)

Cróimiam	15.0 min.-17.5 max.	Fosfar	0.04
Nicil	3.0 min.-5.0 max.	Sulfair	0.03
Copar	3.0 min.-5.0 max.	Sileacan	1.0
Carbionsann	0.07	Nobium plus Tantalum	0.15 min.-0.45 max.
Mangainéise	1.0	Iarann	Cothromaigh

Precipitation Hardening Process

17-4PH undergoes a distinct aging process, where it is initially solution-treated, then aged at varying temperatures (900°F to 1150°F) to achieve different hardness levels.

An próiseas seo, referred to as “aging” or “precipitation hardening,” allows manufacturers to fine-tune its properties for specific applications.

Caighdeáin Cháilíochta

17-4PH meets rigorous standards, including AMS 5643, ASTM A564, and DIN 1.4542.

These quality standards ensure that 17-4PH consistently provides reliability and durability across various high-stress environments.

All Grades Comparison

Ó	ASTM	Le linn	U.S	AFNOR	CNU	Gb
1.4542	Grád 630(AMS 5604B)	X5CrNiCuNb 16-4	S17400	Z5	17-4Chomhthair	0CR17NI4CU4NB

3. Processing Services

Smelting Option

1 EAF: Foirnéise Arc Leictreach

2 EAF+LF+VD: Refined-smelting and vacuum degassing

3 EAF+ESR: Electro Slag Remelting

4 EAF+PESR: protective atmosphere Electro Slag Remelting

5 VIM+PESR: Leá ionduchtaithe folúis

Forming Option

1 Hot rolling process

2 Gaibhniú te: Electro-hydraulic; High-speed-hydraulic; Oil-hydraulic; Precision-forging

Heat-treatment Option

1 +A: Anúite (full/soft/spheroidizing)

2 +Thuaidh: Normalaithe

3 +NT: Normalized and tempered

4 +QT: Quenched and tempered (water/oil)

5 +AT: Solution annealed

6 +P: Precipitation hardened

Surface Option

1 Black Surface

2 Grounded: Bright but rough; Not precision

3 Machining for plate: Bright and precision; Little turning scar

4 Peeled/Turned: Bright and precision; Little turning scar

5 Polished: Very Bright and precision size; Not turning scar

Other Services

1 Gearradh: Small pieces

2 Meaisín CNC: Produce your drawing

3 Package: Bare/Nylon/Canvas/Wooden

4 Payment: T/T, L/C, O/A(request credit)

5 Transport: FOB/CFR/CIF/DDU/DDP (train/ship/Air)

4. Airíonna meicniúla

Delivery Condition	Friotachas leictreach(microhm-cm)	Modal leaisteachas(GPA)	Modulus of Rigidity(GPA)	Tensile Strength Rm (MPA)	Yield Strength Rp0.2 (MPA)	Édáileáil % i 2″ (50.8 mm)	Reduction Of Area (%)	Cré (HAD)
A(Anúite)	98	196	77.2	1030 mí Miannach	760 mí Miannach	8	/	33 maithe
H 900	77	196	77.2	1310 mí Miannach	1170 mí Miannach	10	40	40-47
H925	/	/	/	1170 mí Miannach	1070 mí Miannach	10	44	38-45
H1025	/	/	/	1070 mí Miannach	1000 mí Miannach	12	45	35-42
H1075	80	196	77.2	1000 mí Miannach	860 mí Miannach	13	45	31-39
H1150	86	196	77.2	930 mí Miannach	725 mí Miannach	16	50	28-37

5. Key Properties of 17-4PH Precipitation Hardening Stainless Steel

17-4PH stainless steel is a versatile and high-performance material known for its unique combination of mechanical and physical properties.

Here are the key properties that make 17-4PH a preferred choice in various industrial applications:

Ard -Dlús

• Neart teanntachta: Suas go dtí 180,000 psi (1241 MPA)
• Neart táirgeachta: Suas go dtí 150,000 psi (1034 MPA)
• Cré: Suas go dtí 48 HAD (Scála Rockwell C)

Míniú: 17-4PH achieves its high strength through a precipitation-hardening process.

This process involves solution treating, múchadh, and aging the material, which forms fine precipitates within the matrix, significantly enhancing the material’s strength.

This makes 17-4PH ideal for applications requiring high load-bearing capacity and structural integrity.

Friotaíocht creimthe

• Ábhar Cróimiam: 15-17%
• Ábhar nicile: 3-5%
• Copper Content: 3-5%

Míniú: The high chromium content in 17-4PH provides excellent resistance to corrosion, particularly in environments exposed to chemicals, sáile, and other corrosive agents.

The presence of nickel and copper further enhances its resistance to pitting and crevice corrosion, making it suitable for marine and chemical processing applications.

Excellent Machinability and Weldability

• Machnamhity: 17-4PH is relatively easy to machine compared to other high-strength stainless steels.
• Inmharthanacht: It can be welded using various techniques, lena n-áirítear TIG, Mise, and electron beam welding.

Míniú: The material’s machinability is enhanced by its moderate hardness in the solution-treated condition, making it easier to cut and shape using standard machining tools.

Leis sin, 17-4PH can be efficiently welded, ensuring strong and durable joints, which is crucial for many industrial applications.

Friotaíocht teasa

• Fadteocht: Maintains its strength and properties at elevated temperatures up to 600°F (316° C).

Míniú: 17-4PH retains its mechanical properties even at high temperatures, making it suitable for applications in high-temperature environments such as engine components and exhaust systems.

This property is particularly valuable in industries where components are exposed to significant thermal stress.

Airíonna maighnéadacha

• Magnetic in Hardened Condition:

Míniú: 17-4PH is magnetic in the hardened condition, which can be advantageous for certain applications, such as magnetic sensors and actuators.

This property adds to its versatility and can be leveraged in various industrial settings.

Friotaíocht Tuirse

• Neart tuirse: Friotaíocht tuirse ard, rud a fhágann go bhfuil sé oiriúnach d'fheidhmchláir luchtaithe timthriallach.

Míniú: 17-4PH exhibits high fatigue resistance, which means it can withstand repeated stress cycles without failing.

This property is crucial for components that experience frequent loading and unloading, such as those in aerospace and automotive applications.

Caith Friotaíocht

• Caith Friotaíocht: Good resistance to wear and abrasion.

Míniú: The high hardness and strength of 17-4PH contribute to its excellent wear resistance.

This property is particularly beneficial in applications where components are subject to friction and wear, mar imthacaí agus giaranna.

Cobhsaíocht Toiseach

• Cobhsaíocht: Maintains dimensional stability after heat treatment.

Míniú: Proper heat treatment ensures that 17-4PH maintains its dimensions, which is crucial for precision components.

This property reduces the need for additional machining after heat treatment, saving time and cost.

Bith -chomhoiriúnacht

• Bith -chomhoiriúnacht: Suitable for biomedical applications.

Míniú: 17-4PH is often used in biomedical applications due to its biocompatibility and resistance to corrosion.

It is used in surgical instruments, ionchlannáin, and other medical devices where the material must be safe and non-reactive to bodily fluids.

6. Benefits of Using 17-4PH Stainless Steel

17-4PH stainless steel combines strength, friotaíocht creimthe, agus éascaíocht próiseála, making it a top choice across many demanding industries.

Here’s why it stands out:

Solúbthacht ar fud Thionscail

From aerospace to medical and marine applications, 17-4PH’s robust properties allow it to perform in various challenging environments.

Its adaptability makes it an asset in sectors where high strength and reliability are essential.

Marthanacht agus Friotaíocht Creimthe

The alloy is highly resistant to stress corrosion cracking, go háirithe i dtimpeallachtaí atá saibhir i clóiríd.

This durability translates to longer-lasting parts, which reduces maintenance costs and extends the life of critical components, especially in marine and chemical industries.

Réiteach Costas-Éifeachtach

With high strength and excellent machinability, 17-4PH enables the production of thinner, Comhpháirteanna níos éadroime, reducing material costs.

Its easy machinability also lowers production costs, making it economical for long-term use.

Efficient Heat Treatment

17-4PH allows for rapid heat treatment, which means manufacturers can quickly adjust its strength and hardness.

This flexibility in tuning properties helps speed up production and reduce lead times.

Cothabháil íseal

Due to its corrosion resistance, parts made from 17-4PH require minimal upkeep, which is advantageous in industries where downtime is costly.

Its durability in harsh conditions minimizes repair and replacement needs over time.

High Precision in Machining

The alloy’s machinability, especially in hardened states, supports the precise creation of complex components.

This makes it suitable for parts with tight tolerances, such as surgical instruments and aerospace components.

7. Applications of 17-4PH Stainless Steel

• Aeraspás: Comhpháirteanna struchtúracha, dúntóirí, and parts requiring high strength and corrosion resistance.
• Biomedical: Ionstraimí máinliachta, ionchlannáin, and hand tools that need to be both strong and biocompatible.
• Próiseáil cheimiceach: Caidéil, comhla, and piping systems that must withstand corrosive chemicals.
• Food Process Equipment: Machinery and components in food processing plants, where hygiene and corrosion resistance are crucial.
• Comhlaí Geata: High-pressure and high-temperature valve components that require durability and reliability.
• Comhpháirteanna Meicniúla: Seafta, Gears, and other mechanical parts that need to withstand high loads and stresses.
• Oil and Gas Production: Foils, helicopter deck platforms, and other equipment that operate in harsh environments.
• Laíon agus Páipéar: Paper mill equipment and machinery that require resistance to corrosive chemicals and high temperatures.

8. 17-4PH Stainless Steel Heat Treatment and Fabrication

Cóireáil Réitigh (Condition A)

Próiseáil:

• Teas: Heat the material to 1700°F (927° C).
• ag múchadh: Rapidly cool the material by quenching in water or oil.
• Toradh: This process results in a soft and ductile condition, making the material suitable for forming and machining.

Obair fhuar

Próiseáil:

• Obair chruaite: Subject the material to cold working processes such as rolling, líníocht, nó stampáil.
• Toradh: Cold working increases the strength and hardness of the material, making it suitable for high-strength applications.

Foirmiú te

Próiseáil:

• Teas: Heat the material to a temperature between 1800°F and 2000°F (982°C to 1093°C).
• Foirmiú: Shape the material while it is in a hot state.
• Fuarú: Allow the material to cool gradually.
• Toradh: Hot forming allows for the creation of complex shapes and large components, often used in aerospace and heavy machinery applications.

Anú

Próiseáil:

• Teas: Heat the material to a temperature between 1500°F and 1600°F (816°C to 871°C).
• Fuarú: Cool the material slowly.
• Toradh: Annealing relieves internal stresses and improves ductility, enhancing the material’s formability and reducing the risk of cracking during subsequent operations.

Cruadhú

Próiseáil:

• Aging Treatments:

• • 900° f (482° C): Age the material for 2 uair, agus fuarú aer ina dhiaidh sin.
  • 1050° f (566° C): Age the material for 2 uair, agus fuarú aer ina dhiaidh sin.
  • 1100° f (593° C): Age the material for 2 uair, agus fuarú aer ina dhiaidh sin.

• Toradh: Aging treatments achieve different strength levels, allowing the material to be tailored to specific application requirements.
  Mar shampla, aging at 1100°F (593° C) can result in a tensile strength of up to 180,000 psi (1241 MPA).

Táthú

Teicnící:

• Tig (Gás támh tungstain) Táthú: Suitable for precise and clean welds.
• Mise (Gás támh miotail) Táthú: Faster and more efficient for larger components.
• Táthú Leictreonaic: Ideal for deep and narrow welds with minimal heat-affected zones.
• Táthú léasair: Provides high precision and low heat input.

Breithniú:

• Réamhthéamh: Preheat the material to 150-250°F (65-121° C) to reduce the risk of cracking.
• Low Heat Input: Use low heat input to minimize distortion and residual stresses.
• Cóireáil teasa iar-weld: Perform post-weld heat treatment to relieve residual stresses and ensure a strong, durable joint.

Machnamhity

Leideanna:

• Roghnú uirlisí: Use high-speed steel (HSS) or carbide tools for optimal performance.
• chuisnithe: Apply ample coolant to reduce heat and extend tool life.
• Paraiméadair a ghearradh: Adjust cutting speeds and feeds to handle hard spots and maintain tool sharpness.
• Cothabháil Uirlisí: Regularly inspect and sharpen tools to ensure optimal performance and reduce tool wear.

Optimizing CNC Machining:

• Rátaí Beathaithe: Use appropriate feed rates to balance productivity and tool life.
• Spindle Speeds: Adjust spindle speeds to match the material’s hardness and the tool’s capabilities.
• Céimseata Uirlis: Choose tools with the right geometry to handle the material’s hardness and reduce friction.

Críochnú Dromchla

Snasú:

• Próiseáil: Use abrasive materials and polishing compounds to achieve a smooth and shiny surface.
• Toradh: Polishing enhances the material’s appearance and reduces surface roughness, feabhas a chur ar a fhriotaíocht creimeadh.

Bonntáit:

• Cineálacha: Leictreaphlátáil, sciath púdair, and paint.
• Sochar: Coatings provide additional protection against corrosion and enhance the material’s appearance and durability.

9. Machining and Fabrication Considerations

Machnamhity:

• Leideanna: Use high-speed steel (HSS) or carbide tools, apply ample coolant, and maintain sharp tool edges to reduce wear and improve surface finish.
  Adjust cutting parameters to handle hard spots and maintain tool sharpness.

Teicnící Táthú:

• Cleachtais is Fearr: Preheat to 150-250°F (65-121° C), use low heat input, and perform post-weld heat treatment to relieve residual stresses and prevent cracking.
  Proper welding techniques ensure strong and reliable joints.

Heat Treatment and Distortion Control:

• Managing Thermal Expansion: Use fixtures and supports to minimize distortion during heat treatment.
  Gradual heating and cooling can help reduce thermal stresses and maintain dimensional accuracy.

10. Comparison with Other Stainless Steels

304 is 316 Steels dhosmálta:

• Láidreacht: 17-4PH has higher tensile and yield strength compared to 304 is 316 steels dhosmálta.
• Friotaíocht creimthe: 316 offers slightly better corrosion resistance due to its molybdenum content, but 17-4PH provides a good balance of strength and corrosion resistance.
• Costas: 17-4PH is generally more expensive but offers better performance in demanding applications, making it a cost-effective choice in the long term.

Other Precipitation-Hardening Grades:

• 15-5Chomhthair: Higher strength and better toughness, suitable for high-strength applications in aerospace and defense.
• 13-8Chomhthair: Excellent combination of strength and corrosion resistance, used in aerospace and chemical processing.
  13-8PH offers a slightly better balance of strength and toughness compared to 17-4PH.

11. Dúshláin agus Réitigh Choiteann

Susceptibility to Stress Corrosion Cracking (SCC):

• Maolú: Avoid chloride-rich environments, use appropriate heat treatment, and maintain proper surface finish. Regular inspections and maintenance can help prevent SCC.

Heat Treatment Requirements:

• Ensuring Correct Aging: Follow recommended aging temperatures and times to achieve the desired properties. Proper heat treatment is crucial for optimizing the material’s performance.

Dúshláin Meaisínithe:

• Handling Hard Spots: Use harder tool materials and adjust cutting parameters to handle hard spots.
  Regularly inspect and sharpen tools to ensure optimal performance and reduce tool wear.

12. Future Trends and Developments

Dul chun cinn i nDearadh Cóimhiotail:

• Emerging Variants: New grades of precipitation-hardening steels with improved properties, such as enhanced corrosion resistance and higher strength, are being developed.
  These advancements aim to expand the range of applications and improve performance.

Sustainability in Manufacturing:

• Athchúrsáil: Increasing focus on recycling and reusing 17-4PH to reduce environmental impact.
  Sustainable manufacturing practices are becoming more important as industries strive to minimize waste and energy consumption.
• Resource-Efficient Processing: Optimizing production processes to minimize waste and energy consumption, making manufacturing more sustainable and cost-effective.

Application Expansion:

• Fuinneamh in -athnuaite: Growing use of wind turbines, painéil gréine, agus teicneolaíochtaí fuinnimh in-athnuaite eile, where durability and resistance to harsh environments are critical.
• Advanced Robotics: Utilization in high-precision robotic components and systems, where high strength and corrosion resistance are essential for long-term performance.

13. Deireadh

17-4PH precipitation hardening stainless steel is a remarkable material that combines high strength, friotaíocht creimthe, agus machinability den scoth.

Its versatility and durability make it a preferred choice in various industries, from aerospace to biomedical.

Trí thuiscint a airíonna, sochar, agus príomhcheisteanna, manufacturers can leverage 17-4PH to create high-performance products that meet the demands of modern engineering.

Whether you are designing a new product or optimizing an existing one, 17-4PH is a material worth considering for its exceptional performance and reliability.

Má tá aon Cruach dhosmálta riachtanais phróiseála, Ná bíodh drogall ort Déan teagmháil linn.