17-4 PH stainless steel to AMS 5643 is one of the most widely used precipitation-hardening stainless steels in aerospace, defense, medical, and industrial applications.
Why AMS 5643 Matters
AMS 5643 covers 17-4 PH bar products intended for demanding applications requiring:
- high strength
- corrosion resistance
- heat treatment capability
- reliable mechanical performance
Common Heat Treatment Conditions
17-4 PH is commonly supplied as:
Each condition offers a different balance of strength and toughness.
Common Applications
- aerospace components
- pump shafts
- valve components
- fasteners
- medical equipment
- precision machined parts
Why Manufacturers Use 17-4 PH
17-4 PH combines:
- stainless corrosion resistance
- alloy steel strength
- excellent machinability in Condition A
- heat treatability after machining
Related Specifications
17-4 PH material may also be referenced as:
- UNS S17400
- ASTM A564 Grade 630
- 1.4542 Stainless Steel
- AMS 5643
Available Forms
- round bar
- precision ground bar
- centerless ground bar
- shafting
- plate
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