1.4542 stainless steel is a precipitation-hardening stainless steel widely used in aerospace, medical, energy, and industrial applications requiring high strength and corrosion resistance.
What Is 1.4542 Stainless Steel?
1.4542 is the European designation for 17-4 PH stainless steel.
Equivalent specifications include:
- 17-4 PH
- AMS 5643
- UNS S17400
- ASTM A564 Grade 630
Why Use 1.4542 Stainless Steel?
Manufacturers choose 1.4542 because it provides:
- high strength
- corrosion resistance
- heat treatment capability
- good machinability
Common Applications
- aerospace components
- medical instruments
- pump shafts
- valve components
- precision machined parts
Available Heat Treatment Conditions
1.4542 is commonly supplied in:
Each condition offers different mechanical properties depending on the application.
Available Forms
- round bar
- precision ground bar
- centerless ground bar
- flat bar
- plate
- sheet
Related Material Designations
1.4542 may also be referenced as:
- 17-4 PH Stainless Steel
- AMS 5643
- UNS S17400
- X5CrNiCuNb16-4
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