Explore Our Precipitation Hardening Stainless Steel Grades
Different precipitation hardened stainless steel grades are engineered to meet different strength levels,
toughness requirements, corrosion environments, and manufacturing processes.
17-4 PH General-Purpose PH Stainless Steel
Ideal for general engineering applications requiring an excellent balance of strength, corrosion resistance, machinability, and cost efficiency.
- Valves
- Pump Shafts
- Fasteners
- General Industrial Equipment
15-5 PH Aerospace-Grade PH Stainless Steel
Developed for aerospace and high-reliability components requiring improved toughness, better transverse properties, and excellent dimensional consistency.
- Aircraft Fittings
- Pressure Vessels
- Precision Components
13-8Mo Ultra High-Strength PH Stainless Steel
Designed for critical structural components where maximum strength, fracture toughness, and stress corrosion resistance are required.
- Landing Gear
- Defense Equipment
- High-performance Shaft
17-7 PH Spring-Grade PH Stainless Steel
Optimized for elastic components requiring excellent fatigue strength and spring performance.
- Springs
- Washers
- Retaining Rings
Why Choose Our PH Stainless Steel?
Instead of choosing between strength, corrosion resistance, or machinability, precipitation hardening stainless steel
delivers all three in one material. Compared with conventional stainless steels, it offers higher mechanical performance
while maintaining excellent dimensional stability after heat treatment.
Higher Strength Than Conventional Stainless Steel
Provides significantly higher yield and tensile strength than standard stainless steels while maintaining excellent corrosion resistance.
Flexible Heat Treatment Options
Available in multiple aging conditions such as Condition A, H900, H1025, and H1150 to achieve different combinations of strength and toughness.
Longer Service Life
Outstanding fatigue performance helps critical components withstand repeated loading and harsh operating conditions.
Better Dimensional Accuracy
Minimal distortion during aging treatment reduces machining corrections and improves assembly precision.
Lower Manufacturing Cost
Excellent machinability in the solution-treated condition improves machining efficiency before final heat treatment.
Higher Strength-to-Weight Ratio
Enables lighter component designs without compromising structural integrity.
Featured PH Stainless Steel Products
-
![17-7PH]()
17-7PH17-7PH is a semi-austenitic precipitation-hardening stainless steel with a typical composition of 17% Cr - 7% Ni - 1.0% Al. It is one of the most balanced grades in the precipitation-hardening...
-
![13-8MoPH]()
13-8MoPH13-8Mo PH is a martensitic precipitation-hardening stainless steel with a typical composition of 13% Cr - 8% Ni - 2.2% Mo - 1.1% Al, one of the most balanced grades in the precipitation-hardening...
-
![15-5PH]()
15-5PH15-5PH (UNS S15500) is a martensitic precipitation-hardening stainless steel with a typical composition of 14-15.5% Cr, 3.5-5.5% Ni, 2.5-4.5% Cu, 0.15-0.45% Nb, and the balance Fe. It is a grade...
-
![17-4PH]()
17-4PH17-4PH (UNS S17400) is a martensitic precipitation-hardening stainless steel. Its typical composition includes 15-17.5% Cr, 3-5% Ni, 3-5% Cu, 0.15-0.45% Nb, and the balance Fe. It is the most...
Precipitation Hardening Stainless Steel Grade Comparison
| Plate & Sheet | Strength | Toughness | Corrosion Resistance | Machinability | Heat Treatment | Typical Use |
|---|---|---|---|---|---|---|
| 17-4PH | High | Good | High | Good | H900–H1150 | General industrial |
| 15-5PH | High | Very High | High | Good | H950–H1150 | Aerospace precision |
| 13-8Mo | Very High | Very High | Very High | Medium | H950–H1150 | Critical aerospace |
| 17-7PH | Medium-High | High | Good | Excellent | TH1050 / RH950 / CH900 | Springs / elastic parts |
Precipitation Hardening Steel Available Forms
We supply precipitation-hardening stainless steel in various specifications and forms to meet
the needs of a wide range of industries, including machining, forging, and manufacturing.
-
Stainless Steel BarsAvailable in hot rolled, forged, cold drawn, bright, peeled, or centerless ground finishes for machining and structural applications.
- Round Bar
- Flat Bar
- Square Bar
- Hex Bar
-
Plates, Sheets & CoilsSuitable for machining, fabrication, welding, and heavy-duty industrial equipment with custom dimensions available.
- Plate
- Sheet
- Coil
- Strip
-
Pipes & TubesOffered in seamless and welded constructions for high-pressure piping, instrumentation, and fluid handling systems.
- Seamless Pipe
- Welded Pipe
- Precision Tube
- Instrument Tube
-
Wire & Wire RodManufactured for springs, fasteners, welding consumables, and precision industrial components.
- Wire Rod
- Bright Wire
- Spring Wire
-
ForgingsCustom forged components with excellent strength, dimensional accuracy, and mechanical performance for demanding industries.
- Forged Ring
- Forged Disc
- Forged Block
- Forged Shaft
Applications Of Precipitation Hardening Stainless Steel
Aircraft structures require materials that deliver an optimal balance of ultra-high strength, toughness, and fatigue resistance while minimizing weight. PH stainless steel is widely used in critical load-bearing and safety-sensitive aerospace assemblies.
- Aircraft structural components
- Landing gear assemblies
- Aerospace fasteners (bolts, screws, studs)
- Engine hardware and support parts
- Precision aerospace fittings
Oil and gas systems operate in high-pressure, corrosive, and mechanically demanding environments. Precipitation hardening stainless steel is widely selected for components requiring high strength retention and corrosion resistance under harsh service conditions.
- Valve components and trims
- Pump shafts and rotating parts
- Downhole drilling tools
- Wellhead and flow control equipment
- Subsea and pressure-bearing components
Power generation equipment demands materials capable of withstanding continuous cyclic loading, thermal stress, and high mechanical forces. PH stainless steel is commonly used in rotating and high-load systems where reliability is critical.
- Turbine components
- Generator shafts
- Heat exchanger parts
- High-pressure valve systems
- Structural components for energy equipment
Industrial machinery applications require excellent wear resistance, dimensional stability, and long service life under continuous operation. PH stainless steel is suitable for precision and heavy-duty mechanical systems.
- Shafts and drive components
- Gears and transmission parts
- Couplings and connectors
- Precision machined components
- Heavy-duty mechanical assemblies
Manufacturing Capabilities for Precipitation Hardenable Stainless Steel
Our integrated manufacturing process combines advanced melting, precision forging, controlled heat treatment, and CNC
machining to produce precipitation hardening stainless steel with consistent metallurgical quality and reliable mechanical
performance for demanding industrial applications.
We utilize controlled melting processes to ensure high purity and stable chemistry for PH stainless steel grades, including:
- Electric Arc Furnace (EAF)
- Argon Oxygen Decarburization (AOD)
- Vacuum Oxygen Decarburization (VOD)
We offer advanced forging and hot working capabilities to ensure PH Steel possesses a dense microstructure and excellent mechanical properties.
- Open-die forging
- Closed-die forging
- Hot rolling / Hot forming
We implement strict heat treatment control for precipitation hardening stainless steels, including:
- Solution treatment (Condition A)
- Controlled aging (H900 / H1025 / H1150)
- Customized thermal cycles based on application requirements
We support both pre- and post-heat treatment machining processes.
- CNC turning and milling
- Tight tolerance machining
- Semi-finished and finished components
We provide customized surface finishing according to application needs:
- Pickling and passivation
- Polishing
- Cutting and deburring
- Protective anti-corrosion packaging
Beyond standard products, we support customized manufacturing according to customer drawings, specifications, and project requirements.
- Non-standard dimensions
- Special heat treatment conditions
- Near-net-shape forgings
- OEM manufacturing
Quality Control for Precipitation Hardening Stainless Steel
We implement a strict quality control system throughout the entire production process of precipitation hardening stainless
steel, ensuring stable chemical composition, reliable mechanical properties, and full traceability for every batch.
All raw materials are strictly inspected before production.
- Chemical composition verification
- Alloy element control (Cr, Ni, Cu, Nb)
- Material grade confirmation
Our quality control team employs advanced spectroscopic analysis techniques to ensure precise alloy composition.
- Optical emission spectrometer (OES) testing
- Precise control of PH alloying elements
Each batch is tested after heat treatment to ensure required performance.
- Tensile strength testing
- Yield strength verification
- Hardness testing (HRC / HV)
For critical applications, we provide advanced inspection:
- Ultrasonic testing (UT)
- Surface defect inspection
- Internal flaw detection
We use precision instruments to measure and ensure that material dimensions fall within strict tolerance limits.
- Diameter / thickness measurement
- Straightness and flatness control
- CNC machining tolerance verification
Every batch of precipitation-hardening (PH) stainless steel we produce features full traceability.
- Heat number tracking
- ISO Certificates
- Production batch records
FAQ
With abundant experience, we are one of the most professional precipitation hardening steel manufacturers and suppliers in China. We are committed to providing high quality metal products for global clients. Please feel free to wholesale bulk high-grade precipitation hardening steel in stock here from our factory.
Product Recommended
Need the Right Material And Supply Solution For Your Project?
Please inform us of your requirements regardingmaterial grade, product form, or applications, andour technical team will provide a suitable solutionand a fast quotation.
Get in Touch