Alloy steel F11/F22 flange manufacturer, Mumbai. Cr-Mo grades for high-temp steam lines up to 593°C. Class 150-2500, normalized & tempered. Quote in 30 min.
Chromium-Molybdenum alloy steel flanges in ASTM A182 Grade F11 (1.25Cr-0.5Mo) and F22 (2.25Cr-1Mo) are engineered for elevated-temperature steam and hydroprocessing applications up to 593°C.
Governing specification limits per ASTM / ASME standards. Actual values provided on EN 10204 3.1 MTC.
| Element | Specification Limit / Composition |
|---|---|
| Chromium (Cr) | 1.00 - 1.50% (F11) |
| Molybdenum (Mo) | 0.44 - 0.65% (F11) |
| Carbon (C) | 0.05 - 0.20% |
| Property | Specification Limit |
|---|---|
| Yield Strength | 205 MPa min (Class 2) |
| Tensile Strength | 415 - 585 MPa (F11) |
| Service Temp Range | Up to 593°C (1,100°F) |
| Service Temp | Class 150 | Class 300 | Class 600 | Class 900 |
|---|---|---|---|---|
| Ambient (-29 to 38°C) | 290 psi | 750 psi | 1500 psi | 2250 psi |
A: Flanges are normalized and tempered (or quenched and tempered) to achieve the specified grain structure, tensile properties, and creep resistance at elevated temperatures.
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