High-performance machinery components. 5. Accessing the ASTM A564 PDF
To comply with the ASTM A564 standard, manufacturers must strictly adhere to the chemical limits of each grade. Below is the typical chemical composition matrix for the two most dominant grades: Grade 630 (17-4 PH) wt% Grade XM-12 (15-5 PH) wt% Manganese (Mn) Phosphorus (P) Sulfur (S) Silicon (Si) Chromium (Cr) 15.00 – 17.50 14.00 – 15.50 Nickel (Ni) 3.00 – 5.00 3.50 – 5.50 Copper (Cu) 3.00 – 5.00 2.50 – 4.50 Columbium + Tantalum (Nb+Ta) 0.15 – 0.45 0.15 – 0.45 4. Heat Treatment Conditions and Mechanical Properties astm a564 pdf
Developed as a modification of 17-4PH, 15-5PH offers greater structural homogeneity. By reducing delta ferrite content, it provides superior transverse toughness, ductility, and forgeability, making it ideal for critical aircraft components. 3. Heat Treatment and Material Conditions High-performance machinery components