We manufacture forging ingots, billets, and blooms in ASTM A182 F11 Steel, a chromium-molybdenum low alloy steel developed for high-temperature and high-pressure service.
The combination of chromium and molybdenum provides excellent elevated-temperature strength, creep resistance, oxidation resistance, and thermal stability.
ASTM A182 F11 is widely used for manufacturing forged flanges, forged fittings, valves, shafts, fasteners, pressure vessel components, and piping systems for power plants, refineries, petrochemical plants, oil & gas facilities, and other industrial applications where long-term reliability and mechanical performance are essential.
| Element | Content (%) | Function / Effect |
| Carbon (C) | 0.05 – 0.15 | Provides strength while maintaining good weldability |
| Manganese (Mn) | 0.30 – 0.60 | Improves toughness and hardenability |
| Silicon (Si) | 0.50 – 1.00 | Improves strength and acts as a deoxidizer |
| Chromium (Cr) | 1.00 – 1.50 | Enhances oxidation resistance and high-temperature strength |
| Molybdenum (Mo) | 0.44 – 0.65 | Improves creep resistance and thermal stability |
| Phosphorus (P) | Max. 0.030 | Controlled impurity for improved toughness |
| Sulphur (S) | Max. 0.030 | Controlled impurity for better machinability |
| Iron (Fe) | Balance | Base metal |
(Properties may vary depending on section size and heat treatment conditions.)
ASTM A182 F11 is commonly referenced as:
ASTM A182 F11 offers an excellent combination of elevated-temperature strength, creep resistance, oxidation resistance, and weldability. Its chromium-molybdenum alloy composition provides dependable mechanical performance and long service life, making it an ideal choice for forged components used in power generation, refinery, petrochemical, and oil & gas industries operating under high-temperature and pressure conditions.
| Grade | Chromium (%) | Molybdenum (%) | Typical Applications | Comments |
| ASTM A182 F1 | — | 0.44 – 0.65 | Pressure Components | Good high-temperature performance |
| ASTM A182 F5 | 4.00 – 6.00 | 0.45 – 0.65 | Boilers, Refineries | Excellent oxidation resistance |
| ASTM A182 F11 | 1.00 – 1.50 | 0.44 – 0.65 | Steam Piping, Flanges, Valves | Excellent creep resistance |
| ASTM A182 F22 | 2.00 – 2.50 | 0.87 – 1.13 | Pressure Vessels | High-pressure and high-temperature service |
ASTM A182 F11 is a chromium-molybdenum low alloy steel designed for high-temperature and high-pressure applications. It offers excellent creep resistance, oxidation resistance, weldability, and dependable mechanical performance, making it suitable for manufacturing forged flanges, forged fittings, valves, shafts, fasteners, pressure vessel components, and piping systems used in power generation, petrochemical, refinery, and oil & gas industries.
Kesari Alloys manufactures forging ingots, billets, and blooms in ASTM A182 F11 Steel to meet the demanding requirements of critical forging applications.