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17 4 Stainless Plate

17-4 stainless steel plate, also known as 17-4 PH stainless steel plate, is a precipitation hardening stainless steel grade designed for applications

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17-4 Stainless Steel Plate: 17-4 PH Precipitation Hardening Grade for High Strength Applications

17-4 stainless steel plate, also known as 17-4 PH stainless steel plate, is a precipitation hardening stainless steel grade designed for applications requiring high strength, excellent toughness, and good corrosion resistance. With its unique ability to achieve extremely high mechanical properties through aging heat treatment, 17-4 PH has become a preferred material for aerospace, oil & gas, power generation, and precision engineering applications.

Compared with conventional stainless steel grades such as 304 and 316, 17-4 PH stainless steel plate provides significantly higher strength while maintaining good corrosion resistance and dimensional stability.

What Is 17-4 PH Stainless Steel Plate?

17-4 PH is a martensitic precipitation hardening stainless steel containing approximately 17% chromium and 4% nickel. Copper and niobium additions allow the material to achieve high hardness and strength through controlled aging treatment.

Property	17-4 PH Stainless Steel Plate
Material Type	Precipitation Hardening Martensitic Stainless Steel
Main Alloy Elements	Chromium, Nickel, Copper, Niobium
Heat Treatment	Solution Treatment + Aging
Strength Level	Very High
Corrosion Resistance	Good
Magnetic Property	Magnetic

Chemical Composition of 17-4 PH Stainless Steel

The alloy composition of 17-4 PH stainless steel is carefully balanced to achieve high strength through precipitation hardening while maintaining corrosion resistance.

Element	Typical Content
Chromium (Cr)	15%-17.5%
Nickel (Ni)	3%-5%
Copper (Cu)	3%-5%
Niobium + Tantalum (Nb+Ta)	0.15%-0.45%
Carbon (C)	≤0.07%

17-4 PH Mechanical Properties After Aging

The biggest advantage of 17-4 stainless steel plate is its ability to reach different strength levels through different aging conditions.

Condition	Main Characteristics	Typical Applications
H900	Maximum strength and hardness	Aerospace parts, high-load components
H1025	Balanced strength and toughness	General engineering applications
H1150	Higher toughness and ductility	Heavy equipment components

Strength Comparison: 17-4 PH vs 304 vs 316

Grade	Tensile Strength	Yield Strength	Main Advantage
304 Stainless Steel	Approx. 515 MPa	Approx. 205 MPa	Excellent corrosion resistance and forming
316 Stainless Steel	Approx. 515 MPa	Approx. 205 MPa	Superior corrosion resistance
17-4 PH Stainless Steel	Up to 1000+ MPa depending on condition	Up to 900+ MPa depending on condition	High strength and hardness

Why Choose 17-4 PH Stainless Steel Plate?

Many engineering applications require stainless steel materials that can withstand high mechanical loads without sacrificing corrosion performance. 17-4 PH provides several advantages:

Extremely high strength after aging treatment.
Excellent dimensional stability.
Good fatigue resistance.
High hardness and wear resistance.
Good corrosion resistance in industrial environments.
Suitable for precision components.

17-4 PH Stainless Steel Plate Applications

Due to its combination of strength and corrosion resistance, 17-4 PH is widely used in demanding industries.

Aerospace structural components.
Aircraft fittings and landing gear parts.
Oil and gas valve components.
Pump shafts and mechanical parts.
Power generation equipment.
High-strength fasteners.
Precision tooling components.
Marine engineering parts.

17-4 PH Heat Treatment Process

Unlike conventional stainless steel grades, 17-4 PH achieves its final properties through precipitation hardening.

Process	Purpose
Solution Treatment	Creates uniform martensitic structure
Cooling	Prepares material for aging process
Aging Treatment	Creates precipitation strengthening phase

17-4 PH Plate vs 15-5 PH Stainless Steel

Feature	17-4 PH	15-5 PH
Strength	Very High	Very High
Toughness	Excellent	Higher toughness in some conditions
Corrosion Resistance	Good	Good
Applications	General precipitation hardening applications	Aerospace precision components

Available Sizes and Processing Options

17-4 PH stainless steel plates can be supplied in different thicknesses and processed according to customer requirements.

Service	Options
Thickness	Custom thickness according to project requirements
Cutting	Laser cutting, CNC cutting, waterjet cutting
Machining	Precision machining available
Surface Finish	Industrial and customized finishes

Fabrication Considerations for 17-4 PH Plate

Proper fabrication planning is important because 17-4 PH stainless steel can reach high hardness levels after heat treatment.

Machining is easier before final aging treatment.
Welding requires controlled procedures.
Heat treatment condition should match service requirements.
Final hardness should be confirmed before installation.

Why Choose Teda Ganghua 17-4 PH Stainless Steel Plate Solutions?

Teda Ganghua provides stainless steel plate solutions for customers worldwide, including high-performance grades such as 17-4 PH stainless steel for aerospace, energy, industrial equipment, and precision manufacturing applications.

With professional material selection support, strict quality control, customized processing capability, and export experience, Teda Ganghua helps customers obtain reliable stainless steel solutions for demanding projects.

Explore our complete stainless steel product catalog to find 17-4 PH stainless steel plates, stainless steel sheets, coils, and customized metal products.