ASTM A182, Grade F11, Class 2

ASTM A182, Grade F11, Class 2 Product Information -:- For detailed product information, please contact sales. -: ASTM A182, Grade F11, Class 2 Synonyms -:- For detailed product information, please contact sales. -:

ASTM A182, Grade F11, Class 2 Product Information -:- For detailed product information, please contact sales. -: ### **Technical Data Sheet: ASTM A182 / A182M Grade F11 Class 2** --- #### **1. Product Overview** ASTM A182 Grade F11 Class 2 is an **intermediate-strength chromium-molybdenum ferritic steel** within the 1.25Cr-0.5Mo steel family, designed for high-temperature pressure vessel components, valves, fittings, and flanges. Class 2 offers enhanced mechanical properties compared to Class 1 through optimized heat treatment, providing higher strength while maintaining good ductility and toughness for elevated temperature service in power generation and petrochemical applications. --- #### **2. International Standards & Equivalents** | Standard Organization | Designation | |-----------------------|-------------| | **ASTM International** | **A182 / A182M F11 Class 2** | | **UNS Number** | **K11597** | | **ASME** | **SA182 F11 Class 2** | | **European Norm (EN)** | **1.7335** | | **German (DIN)** | **13CrMo4-5** | | **Japanese (JIS)** | **SCMV 3** | | **Chinese GB** | **15CrMo** | --- #### **3. Chemical Composition (Weight %)** | Element | Composition (%) | |---------|-----------------| | **Carbon (C)** | 0.10 - 0.20 | | **Manganese (Mn)** | 0.30 - 0.80 | | **Phosphorus (P)** | 0.025 max | | **Sulfur (S)** | 0.025 max | | **Silicon (Si)** | 0.50 - 1.00 | | **Chromium (Cr)** | 1.00 - 1.50 | | **Molybdenum (Mo)** | 0.44 - 0.65 | | **Iron (Fe)** | Balance | **Key Composition Features:** - **Higher Carbon Range**: 0.10-0.20% for improved strength - **Extended Manganese**: 0.30-0.80% for enhanced hardenability - **Chromium Content**: 1.00-1.50% for oxidation and corrosion resistance - **Molybdenum Addition**: 0.44-0.65% for high-temperature strength and creep resistance --- #### **4. Mechanical Properties** **Tensile Properties (at Room Temperature):** - **Tensile Strength**: 485 MPa (70 ksi) min - **Yield Strength**: 275 MPa (40 ksi) min - **Elongation in 50 mm (2 in)**: 20% min - **Reduction of Area**: 45% min **Hardness Properties:** - **Brinell Hardness**: 143-207 HB - **Rockwell Hardness**: 80-95 HRB **High-Temperature Properties:** - **Maximum Service Temperature**: 593°C (1100°F) - **Creep Strength**: Excellent up to 565°C (1050°F) - **Stress Rupture Strength**: Superior to Class 1 --- #### **5. Physical Properties** | Property | Value | |----------|-------| | **Density** | 7.85 g/cm³ (0.284 lb/in³) | | **Modulus of Elasticity** | 200 GPa (29,000 ksi) at 20°C | | **Thermal Conductivity** | 41.5 W/m·K at 100°C | | **Coefficient of Thermal Expansion** | 11.5 × 10⁻⁶ /K (20-100°C) | | **Specific Heat Capacity** | 470 J/kg·K | | **Melting Point** | 1425-1470°C (2600-2680°F) | --- #### **6. Product Applications** **Power Generation Systems:** - Intermediate-temperature steam piping - Boiler headers and components - Heat exchanger parts - Turbine valve bodies - High-pressure pipe fittings **Petrochemical Equipment:** - Reactor vessel components - Hydrotreating unit fittings - Refinery piping systems - Pressure vessel flanges - Process industry valves **Special Applications:** - High-temperature pump casings - Pressure-containing parts requiring intermediate strength - Power plant upgrade components - Replacement parts for high-temperature service --- #### **7. Manufacturing & Fabrication** **Heat Treatment Requirements:** - **Normalizing Temperature**: 899-954°C (1650-1750°F) - **Tempering Temperature**: 677-760°C (1250-1400°F) - **Cooling Rate**: Controlled air cooling **Welding Characteristics:** - **Good Weldability** with proper procedure qualification - **Recommended Electrodes**: E8018-B2 or E90XX-B2 - **Pre-heat Temperature**: 200-315°C (400-600°F) - **Post-Weld Heat Treatment**: Mandatory at 677-760°C (1250-1400°F) **Machining & Forming:** - Good machinability with proper tool selection - Suitable for hot forming operations - Cold forming requires intermediate annealing --- #### **8. Quality Assurance & Testing** **Mandatory Tests:** - Chemical analysis per heat - Tension test - Hardness test - Hydrostatic test (when specified) **Enhanced Testing:** - Impact testing (when specified by purchase order) - Non-destructive examination - Microstructural verification - Dimensional inspection --- #### **9. Corrosion & High-Temperature Performance** - **Oxidation Resistance**: Good up to 593°C (1100°F) - **Sulfidation Resistance**: Moderate in sulfur environments - **Hydrogen Resistance**: Good with proper heat treatment - **Steam Corrosion**: Excellent resistance - **Creep Rupture Strength**: Enhanced compared to Class 1 --- #### **10. Available Product Forms** - **Forged Bar**: Up to 24-inch diameter - **Flanges**: Class 150 through Class 2500 - **Fittings**: Buttweld and socketweld types - **Valve Components**: Gates, globes, checks - **Special Forgings**: Custom configurations --- **Technical Notes:** - Provides approximately 34% higher yield strength than Class 1 - Suitable for service temperatures up to 593°C (1100°F) - Requires strict control of heat treatment parameters - Post-weld heat treatment is critical for service performance - Compatible with most high-temperature protective coatings *This information is for reference purposes. For complete technical requirements, consult the latest ASTM A182/A182M standard and applicable pressure vessel codes including ASME Section VIII. Always verify material properties with certified mill test reports before fabrication.* -:- For detailed product information, please contact sales. -: ASTM A182, Grade F11, Class 2 Specification Dimensions Size： Diameter 20-1000 mm Length <4236 mm Size:We can customized as required Standard： Per your request or drawing We can customized as required Properties（Theoretical） Chemical Composition -:- For detailed product information, please contact sales. -: ASTM A182, Grade F11, Class 2 Properties -:- For detailed product information, please contact sales. -:

Applications of ASTM A182, Grade F11, Class 2 -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A182, Grade F11, Class 2 -:- For detailed product information, please contact sales. -:

Packing of ASTM A182, Grade F11, Class 2 -:- For detailed product information, please contact sales. -: Standard Packing: -:- For detailed product information, please contact sales. -: Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 707 gallon liquid totes Special package is available on request. E FORUs’ is carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition