ASTM A387 Alloy Steel Wire, Grade 22, Class 1

ASTM A387 Alloy Steel Wire, Grade 22, Class 1 Product Information -:- For detailed product information, please contact sales. -: ASTM A387 Alloy Steel Wire, Grade 22, Class 1 Synonyms -:- For detailed product information, please contact sales. -:

ASTM A387 Alloy Steel, Grade 22, Class 1 Product Information -:- For detailed product information, please contact sales. -: ### **Product Introduction: ASTM A387 Grade 22 Class 1 Steel** **ASTM A387 Grade 22 Class 1** is a chromium-molybdenum alloy steel plate designed for high-temperature pressure vessel applications requiring superior creep strength and oxidation resistance. This specification covers plates in the annealed or normalized and tempered condition, suitable for welded pressure vessels operating in demanding high-temperature environments. --- #### **1. International Standards & Classification** **Primary Standard:** **ASTM A387/A387M** - "Standard Specification for Pressure Vessel Plates, Alloy Steel, Chromium-Molybdenum" **Grade Classification:** - **Grade 22** - 2.25% Chromium - 1.0% Molybdenum alloy steel - **Class 1** - Annealed or normalized and tempered condition **International Equivalents:** - **EN 10028-2**: 10CrMo9-10 - **JIS G4109**: SCMV 4 - **GB/T 3077**: 12Cr2Mo1 - **ISO 9328-2**: 10CrMo9-10 --- #### **2. Chemical Composition** The chemical composition requirements for ASTM A387 Grade 22: | Element | Composition (Maximum %) | |---|---| | Carbon (C) | 0.05-0.15 | | Manganese (Mn) | 0.30-0.60 | | Phosphorus (P) | 0.035 | | Sulfur (S) | 0.035 | | Silicon (Si) | 0.50 | | Chromium (Cr) | 2.00-2.50 | | Molybdenum (Mo) | 0.90-1.10 | **Key Composition Features:** - **Chromium Content**: 2.00-2.50% for enhanced oxidation and corrosion resistance - **Molybdenum Addition**: 0.90-1.10% for superior creep strength - **Controlled Carbon**: 0.05-0.15% for optimal weldability and toughness - **Low Manganese**: 0.30-0.60% for improved high-temperature properties --- #### **3. Physical & Mechanical Properties** **Mechanical Properties (Class 1 condition):** | Property | Value | |---|---| | **Tensile Strength** | 515-690 MPa (75-100 ksi) | | **Yield Strength (min.)** | 310 MPa (45 ksi) | | **Elongation in 2" (min.)** | 18% | | **Elongation in 8" (min.)** | 20% | **Elevated Temperature Properties:** - **Maximum Service Temperature**: Up to 595°C (1100°F) - **Creep Strength**: Excellent long-term creep resistance - **Oxidation Resistance**: Superior performance in high-temperature environments - **Hydrogen Resistance**: Good resistance to hydrogen attack **Physical Properties:** - **Density**: 7.87 g/cm³ (0.284 lb/in³) - **Modulus of Elasticity**: 205 GPa (29,700 ksi) - **Thermal Conductivity**: 43.5 W/m·K - **Coefficient of Thermal Expansion**: 11.6 × 10⁻⁶/°C - **Specific Heat Capacity**: 465 J/kg·K --- #### **4. Product Applications** **High-Temperature Pressure Vessels:** - Hydroprocessing reactors - Hydrogen vessels - High-temperature reactors - Catalytic cracking units **Power Generation:** - High-pressure boiler components - Steam headers and piping - High-temperature heat exchangers - Power plant pressure vessels **Petrochemical Industry:** - Hydrotreating reactors - Reformer vessels - High-temperature process equipment - Refinery hydroprocessing units **Industrial Applications:** - High-temperature processing vessels - Thermal reactor systems - Industrial furnace components - High-pressure manufacturing equipment --- #### **5. Fabrication Characteristics** **Welding Performance:** - **Good Weldability**: With proper procedure control - **Preheat Requirements**: 175-250°C (350-480°F) minimum - **Post-Weld Heat Treatment**: Mandatory at 690-730°C (1275-1350°F) - **Recommended Processes**: GTAW, SMAW, FCAW (low-hydrogen) - **Filler Metals**: E9015-B3, ER90S-B3 or equivalent **Forming & Machining:** - **Moderate Formability**: Hot forming preferred for complex shapes - **Machinability**: Fair (approximately 50% of B1112 steel) - **Cutting Methods**: Plasma, waterjet, and laser cutting recommended - **Hot Working Temperature**: 1050-1200°C (1920-2190°F) **Heat Treatment:** - Supplied in annealed or normalized and tempered condition - Normalizing temperature: 900-940°C (1650-1725°F) - Tempering temperature: 675-705°C (1250-1300°F) - Annealing temperature: 845-875°C (1550-1600°F) **Quality Assurance:** - **Comprehensive Testing**: Full mechanical and chemical analysis - **Impact Testing**: Required for pressure vessel applications - **Hardness Testing**: Mandatory quality control - **Non-Destructive Testing**: UT, RT, MT as specified --- ### **Technical Summary** ASTM A387 Grade 22 Class 1 represents an advanced chromium-molybdenum alloy steel specifically designed for high-temperature pressure vessel applications requiring enhanced creep strength and corrosion resistance. The 2.25% chromium content provides significantly improved oxidation resistance compared to lower alloy grades, while the 1% molybdenum content ensures excellent creep strength and high-temperature stability. This grade is particularly suitable for applications involving hydrogen service at elevated temperatures and pressures, where resistance to hydrogen attack is crucial. The optimized alloy composition makes it ideal for hydroprocessing reactors, hydrogen vessels, and other high-temperature applications in the petrochemical and power generation industries. The material demonstrates excellent performance in high-temperature hydrogen service and aggressive corrosive environments, establishing it as a preferred choice for critical pressure vessel applications where conventional chromium-molybdenum steels would be inadequate. The balanced combination of high-temperature strength, corrosion resistance, and hydrogen service capability makes Grade 22 Class 1 an essential material for advanced energy systems and high-temperature pressure vessel applications. While requiring careful fabrication controls and proper heat treatment, Grade 22 Class 1 delivers reliable performance in demanding service conditions, making it a cost-effective solution for applications where both elevated temperature capability and corrosion resistance are essential requirements. -:- For detailed product information, please contact sales. -: ASTM A387 Alloy Steel, Grade 22, Class 1 Specification Dimensions Size： Diameter 20-1000 mm Length <4368 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 A387 Alloy Steel, Grade 22, Class 1 Properties -:- For detailed product information, please contact sales. -:

Applications of ASTM A387 Alloy Steel Wire, Grade 22, Class 1 -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A387 Alloy Steel Wire, Grade 22, Class 1 -:- For detailed product information, please contact sales. -:

Packing of ASTM A387 Alloy Steel Wire, Grade 22, Class 1 -:- 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 Wire 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 839 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