What are the typical applications of 17-4 PH?

It is commonly used for shafts, gears, turbine blades, fittings, and structural components in aerospace and marine equipment.

How does 17-4 PH compare to 15-5?

17-4 PH provides excellent strength and corrosion resistance, while 15-5 offers slightly better toughness and weldability.

What is Stainless Steel 17-4 PH used for?

It is widely applied in aerospace, marine, nuclear, and chemical industries for its strength and corrosion resistance.

Stainless Steel 17-4 PH

Material Type：Metal
Material Name：Stainless Steel 17-4 PH
Alternative Names：UNS S17400 | ASTM A564 Type 630 | X5CrNiCuNb17-4 | 1.4542
Process Compatibility：CNC Milling, CNC Turning, Heat Treatment

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Description

Stainless Steel 17-4 PH is a martensitic precipitation-hardening stainless steel known for its excellent combination of high strength, hardness, and corrosion resistance. It can be heat-treated to various strength levels through aging processes. With good machinability in the solution-annealed condition and excellent dimensional stability, it is one of the most widely used precipitation-hardening stainless steels in aerospace, chemical, and marine industries.

Lead Time:	< 10 days
Wall Thickness:	0.75 mm
Tolerances:	±0.005″ (±0.125mm)
Max Part Size:	200 cm x 80 cm x 100 cm

Classification of Metal Performance Parameters

Mechanical Properties	Ultimate Tensile Strength	1310
	Yield Strength	1170
	Young’s Modulus / Elasticity	200
	Elongation at Break	10
	Hardness	HRC 28-44
	Fatigue Strength	480
Physical Properties	Density	7.8
	Corrosion Resistance	Excellent
	Magnetism	Magnetic
	Weldability	Good
	Impact Toughness	High
Thermal Properties	Maximum Service Temperature	315
	Thermal Expansion Coefficient	10.8
	Thermal Conductivity	17
	Creep Resistance	Good
Electrical Properties	Electrical Resistivity	60
	Electrical Conductivity	2
	Dielectric Strength	N/A
Processing & Surface Treatment	Machinability	Fair
	Surface Finish Compatibility	Good
	Formability	Moderate
Special Properties	Biocompatibility	Yes
	Flame Retardancy	Yes
	UV Resistance	Moderate
	Recyclability	Yes

Stainless Steel 17-4 PH

What

Stainless Steel 17-4 PH (UNS S17400) is a precipitation-hardening martensitic stainless steel. It offers high tensile strength, corrosion resistance similar to 304 stainless steel, and good toughness. The alloy achieves its properties through heat treatment (precipitation hardening), making it versatile for demanding applications.

Advantages

Very high strength and hardness after aging treatment
Corrosion resistance comparable to 304 in most environments
Good fatigue resistance and wear performance
Excellent dimensional stability during heat treatment
Wide availability and proven track record in multiple industries

Applications

Aerospace components (shafts, fasteners, turbine blades)
Nuclear and chemical processing equipment
Marine applications (pump shafts, valves, fittings)
High-performance mechanical parts requiring strength and corrosion resistance

FAQ

Q What are the typical applications of 17-4 PH?

A
It is commonly used for shafts, gears, turbine blades, fittings, and structural components in aerospace and marine equipment.
Q How does 17-4 PH compare to 15-5?

A
17-4 PH provides excellent strength and corrosion resistance, while 15-5 offers slightly better toughness and weldability.
Q What is Stainless Steel 17-4 PH used for?

A
It is widely applied in aerospace, marine, nuclear, and chemical industries for its strength and corrosion resistance.

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Stainless Steel 17-4 PH

Stainless Steel 17-4 PH

FAQ

Q What are the typical applications of 17-4 PH?

Q How does 17-4 PH compare to 15-5?

Q What is Stainless Steel 17-4 PH used for?

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