The ASTM A564 standard covers standard requirements for age-hardening (precipitation-hardening) stainless steel bars, wires, and shapes. These materials are unique because they combine the excellent corrosion resistance of stainless steel with ultra-high mechanical strength achieved through heat treatment. Key Characteristics Covered:
: Includes precipitation-hardening martensitic and austenitic stainless steels. Common Grades : The most recognized grade under this specification is , also known as (UNS S17400). Temperature Range
Mixers, heat exchanger components, and storage vessel fixtures exposed to corrosive compounds.
Due to its versatility, parts manufactured under the ASTM A564 mandate are found in demanding operating environments across major industries:
The standard outlines several specific heat treatment designations. The letter followed by a number indicates the aging temperature in degrees Fahrenheit:
Age‑hardening (also called precipitation‑hardening) is a heat‑treatment process that produces exceptionally high strength in stainless steels without sacrificing corrosion resistance. The process involves a solution‑annealing step followed by a controlled aging treatment that precipitates fine intermetallic particles, dramatically increasing strength and hardness. This family of materials offers a unique combination of:
Downloading the is step one. Step two is applying it correctly. Whether you are ordering 17-4 PH bars for a hydraulic manifold or 15-5 PH for a landing gear component, remember that precipitation hardening is a precise science.
(tensile strength, yield strength, hardness) for that grade.
