This article provides a deep dive into the specifications, grades, and applications covered by ASTM A564 to help you understand why this standard is critical for modern manufacturing. What is ASTM A564?
To comply with ASTM A564, the material must meet strict chemical compositions and mechanical property benchmarks. Chromium (%) Nickel (%) Copper (%) Yield Strength (min) 15.0 – 17.5 3.0 – 5.0 3.0 – 5.0 145 ksi (H900) XM-12 (15-5) 14.0 – 15.5 3.5 – 5.5 2.5 – 4.5 145 ksi (H900)
The standard requires the following tests for compliance:
| ASTM Type | Common Name | UNS Designation | Key Characteristics | |---|---|---|---| | | 17‑4PH | S17400 | Chromium‑nickel‑copper grade; most widely used PH stainless steel; excellent strength and corrosion resistance | | 631 | 17‑7PH | S17700 | Chromium‑nickel‑aluminum grade; outstanding fatigue resistance; ideal for springs and diaphragms | | 632 | – | S15700 | Similar to 631; contains ferrite; low ductility in large diameters | | XM‑16 | – | S13900 | High‑strength grade for specialized applications | | XM‑25 | – | S17400 | Variant of Type 630, machinable in the fully heat‑treated condition | | UNS S46910 | – | S46910 | Developed for high‑temperature service up to 840 °F (450 °C) |
Visit the official ASTM International website to download the latest authenticated version (e.g., ASTM A564/A564M-24). astm a564 pdf
Propeller shafts, sailboat fittings, and specialized fasteners requiring high fatigue limits and seawater resistance. 6. How to Access the ASTM A564 PDF Legally
The specification covers several distinct types of precipitation-hardening (PH) stainless steels, categorized by their crystalline structures: 1. Martensitic Precipitation-Hardening Alloys
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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: This article provides a deep dive into the
Slight variations in trace elements can cause part failures in high-stress applications.
is the standard specification for hot-rolled and cold-finished age-hardening (precipitation-hardening) stainless steel bars and shapes. These materials are unique because they offer the excellent corrosion resistance of austenitic stainless steel combined with the high strength of martensitic or low-alloy steels.
Since I cannot provide the file, here are the :
17-7 PH (limited to small diameter bars due to ferrite content). ASTM International 3. Mechanical Properties & Heat Treatment Chromium (%) Nickel (%) Copper (%) Yield Strength (min) 15
This is the most popular precipitation-hardening grade. It contains approximately 17% chromium and 4% nickel, supplemented with copper.
Understanding ASTM A564: The Definitive Guide to Precipitation-Hardening Stainless Steel Bars and Shapes
: Suitable for high-strength applications at room temperature or service temperatures up to 600°F (315°C) Boltport Fasteners Common Mechanical Properties (Grade 630 / 17-4 PH)