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17-4PH Stainless Steel

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Description

1.4542 (X5CrNiCuNb16-4) is a well-established precipitation hardening martensitic stainless steel capable of achieving very high strength and hardness after a relatively simple heat treatment. It offers excellent corrosion resistance combined with a structured range of mechanical property levels depending on the precise heat treatment applied. It is readily machined and fabricated in the softer tempers and can then be heat-treated to exceptional strength and dimensional stability. It shows the following features and properties:

Very high strength

Very good resistance to pitting and crevice corrosion

Excellent resistance to chloride stress corrosion cracking

Good workability and weldability

Related Standards

Equivalent Materials

This material data has been provided by Matmatch.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

Ashby charts

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Properties

Chemical properties

Property
Chromium	17 %
Copper	4 %
Iron		Balance
Nickel	4 %
Niobium	0.3 %	Nb+Ta
Tantalum	0.3 %	Nb+Ta

Technological properties

Property
Application areas	Offshore & marine: Offshore foils, helicopter deck platforms, pump shafts, couplings, fasteners, valve parts and spindles;Aerospace: Turbine blades, missile and rocket fittings, undercarriage components and fasteners;Other: Nuclear waste casks, medical instruments, paper mill equipment and chemical process plant, springs, screws, bolts, gears, bushes and wear rings
Corrosion properties	Very high corrosion resistance
General machinability	It is readily machinable