Yields the highest tensile strength and hardness but the lowest ductility and impact toughness.
ASTM A564 covers a specific class of metals known as precipitation-hardening (PH) stainless steels. These materials bridge the gap between standard austenitic grades (like 304 or 316), which offer excellent corrosion resistance but lower strength, and martensitic grades (like 410), which are strong but less corrosion-resistant. The specification details requirements for: (round, square, hexagon, or rectangles). astm a564 pdf
This grade features roughly 13% chromium, 8% nickel, and 2% molybdenum. Yields the highest tensile strength and hardness but