Project Description
F22, 1.7380 Low Alloy Chrome-Moly Steel
Product Description
F22, 1.7380 is a high-performance low alloy steel featuring a carefully balanced 2.00-2.50% chromium and 0.90-1.10% molybdenum composition, designed specifically for demanding high-temperature and high-pressure applications. This premium alloy achieves an exceptional combination of high strength, excellent toughness (even at sub-zero temperatures), and outstanding creep resistance through its optimized chemical formulation and controlled heat treatment processes. F22, 1.7380 offers superior resistance to hydrogen attack, temper embrittlement, and oxidation at elevated temperatures, making it the material of choice for critical components in oil and gas, power generation, and petrochemical industries. Certified to meet the stringent requirements of API 6A and NACE MR0175 standards, this versatile alloy delivers reliable performance in some of the most challenging service conditions found in industrial applications.
Applications
F22, 1.7380 chrome-moly steel is specifically designed for applications requiring high strength, toughness, and resistance to high-temperature hydrogen attack. Its primary applications include:
- Pressure vessels and reactors for oil and gas processing
- Wellhead components and Christmas trees for oil and gas production
- High-pressure valves and valve bodies for severe service
- Hydrogen processing equipment in refineries
- Steam drums and headers in power generation
- Heat exchangers operating at elevated temperatures
- Hydrocracking and hydrotreating vessels
- Piping systems for high-temperature and high-pressure service
- Fittings and flanges for critical pressure containment
- Boiler components in power plants
- Process equipment in petrochemical plants
- Structural components requiring high strength at elevated temperatures
The exceptional combination of mechanical properties and high-temperature performance makes F22, 1.7380 particularly valuable for applications where carbon steels and lower-alloy steels would be susceptible to hydrogen embrittlement, creep, or loss of strength at elevated temperatures.
Standards and Certifications
F22, 1.7380 low alloy steel complies with the following international standards and certifications:
- ASTM A182/A182M Grade F22
- ASTM A217 Grade WC9
- ASTM A335/A335M Grade P22
- ASTM A336/A336M Grade F22
- ASTM A387/A387M Grade 22
- ASTM A542/A542M Grade D
- API 6A (PSL 3 and 4)
- NACE MR0175/ISO 15156
- European Standard EN 10028-2 Grade 10CrMo9-10
- European Standard EN 10222-2 Grade 10CrMo9-10
- German Standard DIN 17175 Grade 10CrMo9-10
- German Standard DIN 17243 Grade 1.7380
- British Standard BS 3604 Grade 622
- Japanese Industrial Standard JIS G4109 SCMV2
All grades meet the requirements of API 6A and NACE MR0175, ensuring suitability for critical oil and gas applications including sour service environments.
Chemical Composition and Grade Comparison
Chemical Composition (in %)
| Element | C | Si | Mn | P | S | Cr | Mo | Ni | V | Cu |
|---|---|---|---|---|---|---|---|---|---|---|
| Min | 0.10 | 0.15 | 0.30 | ≤ | ≤ | 2.00 | 0.90 | ≤ | ≤ | ≤ |
| Max | 0.15 | 0.45 | 0.50 | 0.025 | 0.025 | 2.50 | 1.10 | 0.50 | 0.03 | 0.35 |
Grade Equivalents
| Standard | Designation |
|---|---|
| ASTM/ASME | F22, P22, WC9, Grade 22 |
| German DIN | 1.7380, 10CrMo9-10 |
| European EN | 10CrMo9-10 |
| British BS | 622 |
| Japanese JIS | SCMV2 |
| UNS | K21590 |
Comparison with Similar Grades
| Property | F22, 1.7380 | F11, 1.7335 (1¼Cr-½Mo) | F5, 1.7362 (5Cr-½Mo) |
|---|---|---|---|
| Chromium Content | 2.00-2.50% | 1.00-1.50% | 4.00-6.00% |
| Molybdenum Content | 0.90-1.10% | 0.45-0.65% | 0.45-0.65% |
| Max Service Temperature | ~595°C (1100°F) | ~565°C (1050°F) | ~650°C (1200°F) |
| High-Temperature Strength | Excellent | Good | Very Good |
| Hydrogen Attack Resistance | Very Good | Good | Excellent |
| Typical Application | Pressure vessels, valves | Steam piping, boilers | Refinery equipment |
Mechanical Properties
F22, 1.7380 offers excellent mechanical properties in the quenched and tempered (QT) condition:
Mechanical Properties in Quenched and Tempered (QT) Condition
| Property | Value |
|---|---|
| 0.2%-Offset-Yield Strength Rp0.2 in MPa (ksi) | ≥ 517 (75) |
| Tensile Strength Rm in MPa (ksi) | ≥ 655 (95) |
| Elongation L0 = 4 d (A5) in % | ≥ 18 |
| Reduction of Area (Z) in % | ≥ 35 |
| Impact Toughness (Charpy-V at 23 °C) in J (ft-lbs) | ≥ 80 (59) |
| Impact Toughness (Charpy-V at -60 °C) in J (ft-lbs) | ≥ 27 (20) |
| Hardness in BHN (HRC) | 207 – 234 (18 – 22) |
Physical Properties
| Property | Value |
|---|---|
| Density | 7.8 g/cm³ at 20°C |
| Elastic modulus at 20°C | 212 GPa |
| Thermal conductivity at 20°C | 38 W/m·K |
| Specific heat capacity at 20°C | 460 J/kg·K |
| Electrical resistivity at 20°C | 0.28 μΩ·m |
| Thermal expansion coefficient (20-100°C) | 12.1 × 10⁻⁶ /K |
| Magnetic permeability | Ferromagnetic |
High-Temperature Properties
| Temperature | Minimum 0.2% Yield Strength MPa (ksi) | Minimum Tensile Strength MPa (ksi) |
|---|---|---|
| Room Temperature | 517 (75) | 655 (95) |
| 400°C (750°F) | 420 (61) | 560 (81) |
| 450°C (840°F) | 395 (57) | 520 (75) |
| 500°C (930°F) | 345 (50) | 450 (65) |
| 550°C (1020°F) | 275 (40) | 380 (55) |
Available Dimensions
SHUNFU METAL supplies F22, 1.7380 chrome-moly steel in the following forms and dimensions:
- Forgings: Custom sizes according to ASTM A182/A182M, API 6A, and customer specifications
- Round Bars: Diameter range from 20 mm to 500 mm (0.787″ to 19.685″)
- Plates and Sheets: Thickness from 5 mm to 200 mm (0.197″ to 7.874″) according to ASTM A387/A387M
- Pipes and Tubes: According to ASTM A335/A335M Grade P22 specifications
- Fittings: According to relevant ASTM and ASME specifications
- Flanges: According to ASTM A182/A182M and relevant ASME specifications
- Valve Bodies: Custom sizes per customer drawings and specifications
- Custom Components: Machined according to customer drawings and specifications
All materials are supplied in quenched and tempered (QT) condition to ensure optimal mechanical properties. Custom dimensions and specifications are available upon request to meet specific project requirements. All products are fully tested and certified to meet or exceed relevant industry standards.
Heat Treatment
F22, 1.7380 achieves its optimal properties through a carefully controlled heat treatment process:
- Normalizing: 900-950°C (1650-1740°F) followed by air cooling
- Austenitizing: 910-980°C (1670-1795°F) followed by oil or water quenching
- Tempering: 650-720°C (1200-1330°F) for optimal combination of strength and toughness
- Post-Weld Heat Treatment (PWHT): 680-730°C (1255-1345°F) for stress relief and restored properties in welded joints
All SHUNFU METAL products are heat treated according to strict procedures to ensure consistent mechanical properties and microstructure. Heat treatment records are maintained for full traceability and quality assurance.
High-Temperature Performance
F22, 1.7380 chrome-moly steel offers exceptional performance at elevated temperatures:
- Creep Resistance: Superior resistance to creep deformation at temperatures up to 595°C (1100°F).
- Hydrogen Attack Resistance: Excellent resistance to high-temperature hydrogen attack in hydrogen-rich environments at elevated temperatures and pressures according to the Nelson Curves.
- Oxidation Resistance: Good resistance to oxidation and scaling at temperatures up to 600°C (1112°F).
- Thermal Stability: Excellent microstructural stability during long-term exposure to elevated temperatures.
- Temper Embrittlement Resistance: Good resistance to temper embrittlement in the typical operating temperature range.
These properties make F22, 1.7380 an ideal material for pressure-containing components in high-temperature and high-pressure applications, particularly where hydrogen service is involved.
Weldability and Fabrication
F22, 1.7380 offers the following fabrication characteristics:
- Weldability: Good weldability with appropriate procedures. Preheat to 150-250°C (302-482°F) is typically required. Matching or compatible filler metals should be used. Post-weld heat treatment is mandatory for most pressure-containing applications.
- Machinability: Good machinability with appropriate tooling and cutting speeds.
- Formability: Good hot formability at temperatures between 900-1150°C (1650-2100°F). Limited cold formability.
- Heat Treatment Response: Excellent response to heat treatment with predictable mechanical properties.
SHUNFU METAL can provide detailed fabrication guidelines and technical support to ensure successful implementation of F22, 1.7380 in your applications.
Why Choose SHUNFU METAL for F22, 1.7380
When sourcing F22, 1.7380 chrome-moly steel for your critical applications, SHUNFU METAL delivers superior quality and service. Our inventory of F22, 1.7380 meets the most stringent industry standards and undergoes comprehensive quality control to ensure consistent performance in demanding high-temperature and high-pressure environments. We provide complete material traceability and certification, including:
- Material test reports (MTR) documenting chemical composition
- Mechanical property certification including elevated temperature testing when required
- Heat treatment documentation
- Non-destructive testing results including ultrasonic, magnetic particle, and radiographic inspection as required
- API 6A and NACE MR0175 compliance certification
- Positive material identification (PMI) testing reports
Our technical experts can assist you in selecting the optimal material specification and heat treatment condition for your specific application requirements, ensuring maximum performance and service life of your equipment. With competitive pricing, reliable global shipping, and responsive customer service, we aim to be your trusted partner for specialty alloy solutions in the oil and gas, power generation, and petrochemical industries.
Contact us today with your F22, 1.7380 requirements. Our team is ready to provide detailed quotations and technical support to help you select the ideal material specification for your critical pressure vessels, valves, wellhead equipment, or other demanding high-temperature applications.
We are committed to integrate steel resources in china and serve the global steel market. Our company has more than 15 years of experience in steel researching, production, managing and sales. And our team mostly are based on and worked in national famous steel enterprise before. In the aspect of resources and information, we have established cooperative relationship with nearly hundred enterprises, either state-owned or private owned in China.
What’s more, we have built long, deep and close business relationship with dozens of steel company, Sharing and holding equities with several steel enterprises. Because of the close cooperation with steel companies and our pioneering spirit, which can ensure us stay at the top competition, and ensure our customers get what they really want. We provide preffesional one-stop service to the Contractors of follows project:
- Oil and Gas Pipeline Construction
- Onshore and Offshore
- Boiler Manufacturers
- Oil Refining Equipment
- Petroleum and Chemical Plant Construction
- Fire Protection
- Heating & Air Conditioning
Our ability to purchase materials directly from leading mills at the best possible price will give you the competitive edge. This coupled with a skilled workforce dedicated to embracing the demands of the markets we serve. Just give us a call +86-731-89903933.
