Due to their unique ability to combine high strength with moderate to high corrosion resistance, ASTM A564 stainless steels are extensively used in: Landing gear parts, structural components. Oil & Gas: Valve stems, pump shafts, blowout preventers.
Often classified here due to its unique processing path, requiring a transformation from an austenitic structure to a martensitic structure before final aging. Heat Treatment Conditions and Terminology
ASTM A564 is the cornerstone for anyone working with age-hardening stainless steel bars. Whether you are opting for the versatile 17-4 PH or the high-toughness 13-8 Mo, understanding the thermal processing and chemical limits defined by this standard is essential for project success. astm a564 pdf
| Grade (UNS) | Condition | Tensile Strength (min, ksi) | Yield Strength (min, ksi) | Hardness (HRC) | |-------------|-----------|----------------------------|--------------------------|----------------| | S17400 (17-4 PH) | H900 | 190 | 170 | 40–47 | | S17400 (17-4 PH) | H1025 | 155 | 145 | 35–44 | | S17700 (17-7 PH) | RH950 | 200 | 185 | 43–48 | | S15500 (15-5 PH) | H925 | 170 | 155 | 39–45 |
Materials shipped under ASTM A564 are generally supplied in . In this state, the steel is soft enough for standard machining. It is then age-hardened at specific temperatures to reach the desired properties. Common aging heat treatments for Type 630 include: Due to their unique ability to combine high
ASTM A564, officially titled Standard Specification for Hot‑Rolled and Cold‑Finished Age‑Hardening Stainless Steel Bars and Shapes , is a globally recognized standard published by (formerly the American Society for Testing and Materials). It governs the manufacture, chemical composition, mechanical properties, heat treatment, and testing of precipitation‑hardening (PH) stainless steel bar products.
The material can be machined or formed easily in the solution-annealed state, and then heat-treated (aged) to achieve maximum strength without significant distortion. Popular ASTM A564 Grades Heat Treatment Conditions and Terminology ASTM A564 is
The is the standard specification for hot-rolled and cold-finished age-hardening stainless steel bars and shapes . It covers a variety of corrosion-resistant and high-strength steels, most notably Grade 630 (commonly known as 17-4 PH stainless steel). Core Content of ASTM A564
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Alloys purchased under the ASTM A564 specification are rarely used in their raw, as-rolled state. Their mechanical properties are unlocked through a two-stage thermal process: solution annealing followed by age hardening.