**ASTM A182 F310H** is a specification for forged or rolled alloy and stainless steel pipe flanges, forged fittings, and valves and parts for high-temperature service. The “F310H” designation refers to a specific grade of stainless steel that is designed for high-temperature applications.
### Key Features of ASTM A182 F310H:
1. **Material Composition**:
– **Chromium (Cr)**: 24-26%
– **Nickel (Ni)**: 19-22%
– **Carbon (C)**: 0.04-0.10%
– **Manganese (Mn)**: 2.00% max
– **Silicon (Si)**: 1.50% max
– **Phosphorus (P)**: 0.045% max
– **Sulfur (S)**: 0.030% max
2. **High-Temperature Resistance**:
– F310H is specifically designed for high-temperature environments, offering excellent oxidation resistance and strength at elevated temperatures.
3. **Corrosion Resistance**:
– The high chromium and nickel content provide excellent resistance to oxidation and corrosion, making it suitable for harsh environments.
4. **Applications**:
– Commonly used in high-temperature applications such as power generation, petrochemical, and chemical processing industries.
– Suitable for use in furnaces, heat exchangers, and other high-temperature equipment.
5. **Forged Flanges**:
– Flanges made from ASTM A182 F310H are forged to ensure high strength and durability.
– These flanges are used to connect pipes, valves, pumps, and other equipment to form a piping system.
### Standards and Specifications:
– **ASTM A182**: Standard specification for forged or rolled alloy and stainless steel pipe flanges, forged fittings, and valves and parts for high-temperature service.
– **ASME B16.5**: Standard for pipe flanges and flanged fittings.
– **ASME B16.47**: Standard for large diameter steel flanges.
### Manufacturing Process:
– **Forging**: The material is heated and shaped using compressive forces to achieve the desired shape and mechanical properties.
– **Heat Treatment**: The flanges may undergo heat treatment to enhance their mechanical properties and ensure they meet the required specifications.
### Quality Assurance:
– **Testing**: Flanges are subjected to various tests, including mechanical testing, chemical analysis, and non-destructive testing (NDT) to ensure they meet the required standards.
– **Certification**: Manufacturers provide material test reports (MTRs) and certifications to verify compliance with ASTM A182 F310H specifications.
### Common Types of Flanges:
– **Weld Neck Flanges**
– **Slip-On Flanges**
– **Blind Flanges**
– **Socket Weld Flanges**
– **Threaded Flanges**
– **Lap Joint Flanges**
### Conclusion:
ASTM A182 F310H forged flanges are essential components in high-temperature and high-pressure applications. Their superior material properties and rigorous manufacturing standards ensure reliability and performance in demanding environments. When selecting flanges, it is crucial to consider the specific requirements of your application to ensure the right material and type are chosen.
