Material requirements for ASTM A694 GR. F65 compact flange
A Singaporean client recently placed an order for ASTM A694 GR. F65 compact flanges, specifying strict requirements for the chemical composition and heat treatment of the material to ensure the highest quality and reliability.
Chemical Composition (%, max values):
| Carbon (C) | Manganese (Mn) | Phosphorus (P) | Sulfur (S) | Silicon (Si) |
| ≤ 0.30 | ≤ 1.60 | ≤ 0.025 | ≤ 0.025 | 0.15-0.35 |
Note: Elements such as Copper (Cu), Nickel (Ni), Chromium (Cr), Molybdenum (Mo), Vanadium (V), Niobium (Nb), and Boron (B) are not required, but their presence must be reported.
ASTM A694 GR F65 Compact Flange
Heat Treatment Requirements:
All forgings must undergo heat treatment:
For carbon steel and high-strength low-alloy steel, the heat treatment options include normalizing, normalizing followed by tempering, or quenching followed by tempering.
For alloy steel, the treatment options are normalizing followed by precipitation aging or quenching followed by precipitation aging.
Minimum Tempering Temperature:
The minimum tempering temperature for all steel types is 540°C.
For alloy steel, the precipitation aging process should be conducted within a temperature range of 540-665°C.
Haihao Group’s manufacturing processes are designed to meet such stringent requirements, ensuring that each flange produced adheres to the highest standards of quality and reliability. Our expertise in handling the specific needs of compact flanges, such as those with ASTM A694 GR. F65 material, enables us to provide the exact products our clients demand, backed by a commitment to excellence and precision.
If your project requires customized, high-quality compact flanges with precise material specifications, Haihao Group is your trusted partner.