Introduction to Alloy Pressure Vessel Steel
Alloy Pressure Vessel Steel, also called Chrome-Moly or Boiler Steel, includes grades like A387 and SA387. Unlike standard Pressure Vessel Steel, it has added chromium and molybdenum, boosting strength, toughness, and corrosion resistance in high pressure and temperature.
Subtypes include ferritic and martensitic steels for different uses. Key features like thermal stability, high strength, and crack resistance make it ideal for vessels and boilers. It is weldable and formable, processed through hot forming, normalizing, and tempering.
Alloy Pressure Vessel Steel is used in petrochemical, oil and gas, chemical, and power industries, where durability and safety matter most. Standard Pressure Vessel Steel handles less extreme conditions, while Alloy excels in tougher environments.
Benefits of Alloy Pressure Vessel Steel
Alloy Pressure Vessel Steel offers significant advantages for both manufacturers and end-users. Its specialized properties make it ideal for demanding applications. Here are some key benefits:
- High Strength: With excellent tensile strength, it withstands high pressures without deformation.
- Corrosion Resistance: Resists oxidation and corrosion, even in harsh environments, extending equipment life.
- Thermal Stability: Maintains performance at high temperatures, crucial for boilers and pressure vessels.
- Crack Resistance: Designed to resist hydrogen-induced cracking and fatigue, ensuring safety and durability.
- Weldability: Allows easy fabrication and repairs, reducing manufacturing and maintenance costs.
- Long Service Life: With high durability, it ensures long-term reliability, reducing the need for frequent replacements.
- Cost Efficiency: Lowers lifecycle costs due to its strength, durability, and reduced maintenance requirements.
Types of Alloy Pressure Vessel Steel
Alloy Pressure Vessel Steel is divided into several main categories, each with popular grades suited for specific uses. Below are the main types and their key grades.
Chrome-Molybdenum Steel (Cr-Mo Steel)
- A387 Grade 11: Excellent resistance to heat and corrosion, ideal for pressure vessels and boilers.
- A387 Grade 22: Higher strength and heat resistance, used in high-temperature applications like power plants.
Carbon-Manganese Steel
- A516 Grade 70: High strength and excellent notch toughness, commonly used in oil and gas sectors.
- A516 Grade 60: Good weldability and impact resistance, suited for moderate- to low-temperature applications.
Nickel-Chromium-Molybdenum Steel
- SA387 Grade 91: Exceptional high-temperature strength and oxidation resistance, perfect for energy and refinery sectors.
- SA387 Grade 5: Combines high toughness and heat resistance, often used in chemical processing equipment.
Each grade offers a balance of strength, toughness, and resistance to environmental factors, making them ideal for different industrial applications.
Shapes of Alloy Pressure Vessel Steel
- Plates: Used for large pressure vessels and boilers in power plants and refineries.
- Sheets: Suitable for smaller pressure enclosures and industrial tanks.
- Bars: Ideal for components requiring high strength and toughness, such as fasteners and support structures.
- Pipes: Commonly used for transporting high-pressure fluids and gases in chemical and petrochemical industries.
- Tubes: Applied in heat exchangers, boilers, and condensers for efficient thermal transfer.
- Forgings: Utilized in heavy-duty pressure vessels and flange connections, providing extra strength.
- Coils: Used for producing various steel parts that require flexibility in shape and thickness.
These shapes meet diverse industrial needs, balancing strength, flexibility, and weight efficiency.
Industries & Applications
Some common industries and applications include:
Petrochemical Industry
Oil and Gas Industry
Power Generation
Chemical Processing
Refineries
Shipbuilding
Pharmaceutical Industry
Food and Beverage Processing
Alloy Pressure Vessel Steel Mechanical Properties
| Property | Metric | Imperial |
|---|---|---|
| Tensile Strength | 485-620 MPa | 70,000-90,000 psi |
| Yield Strength | 275-415 MPa | 40,000-60,000 psi |
| Brinell Hardness | 130-200 HBW | 130-200 HBW |
| Rockwell Hardness | 70-90 HRB | 70-90 HRB |
| Vickers Hardness | 130-200 HV | 130-200 HV |
| Elongation | 18-25% | 18-25% |
| Elastic Modulus | 200 GPa | 29,000 ksi |
Alloy Pressure Vessel Steel Specifications
Below are the standard dimensions for various grades of Alloy Pressure Vessel Steel, detailing available lengths, widths, and thicknesses to meet your specifications.
| Varieties | Grade | Specifications(mm) | Standard | ||
| Thickness | Width | Length | |||
| Alloy Pressure Vessel Steel | 16Mo3 | 6～150 | 900～4800 | 3000～25000 | EN 10028-2 |
| A387 Gr.2 CL.1/2 | ASTM A387/A387M | ||||
| A387 Gr.11 CL.1/2 | |||||
| A387 Gr.12 CL.1/2 | |||||
| A387 Gr.22 CL.1/2 | |||||
| A387 Gr.22L CL.1 | |||||
| A841 Gr.A/B/C CL.1 | 8～100 | ASTM A841/A841M | |||
| A841 Gr.A/B/C CL.2 | |||||
| 13CrMo4-5 | 6～150 | EN 10028-2 | |||
| 10CrMo9-10 | |||||
Related Grades
Find More Alloy Pressure Vessel Steel Grades at SteelPRO Group!
A pressure vessel steel designed for high-temperature applications, offering good heat resistance and creep strength. Commonly used in boilers and pipes in power plants.
A chromium-molybdenum alloy steel with excellent heat and corrosion resistance, ideal for pressure vessels operating in high-temperature environments such as chemical and petrochemical plants.
A pressure vessel steel known for its high toughness and weldability, especially suited for low-temperature service. Commonly used in the storage of liquefied gases.
A chromium-molybdenum alloy steel used in high-temperature pressure vessels and boilers, offering great heat resistance and long-term durability.
A pressure vessel steel with high strength and excellent resistance to heat and oxidation, used in power generation, petrochemical, and chemical industries for high-pressure applications.
Alloy Pressure Vessel Steel When & Where You Need It
At SteelPRO Group, you get more than just quality steel. With multiple facilities across the country capable of providing alloy pressure vessel steel, we can also work with you to manage your inventory, ensuring you get product when and where you need it to keep your production running.
Explore Our Available Steel Products & Grades
Our knowledge and experience give nearly 100% accurate delivery of High Carbon, Low Carbon, Stainless Steel products processed and packaged to your exact specifications.
What are the typical lead times for delivering Alloy Pressure Vessel Steel in bulk orders?
Lead times typically range from 1 to 3 weeks, depending on the grade and volume. For common grades like A387, the lead time tends to be shorter due to higher availability. Custom specifications or large orders may require additional time for production and quality checks.
How do the material certifications and quality control processes differ between your A387 and A841 grades?
A387 requires certification to ASTM standards with rigorous heat treatment and mechanical property tests for high-temperature use, while A841 undergoes impact testing for low-temperature service. Both grades are subject to ultrasonic testing, chemical composition analysis, and traceability documentation, but the testing specifics depend on the intended application conditions.
Can you provide the price fluctuation trends for Alloy Pressure Vessel Steel over the past year?
Over the past year, prices for Alloy Pressure Vessel Steel have seen some fluctuations due to factors like raw material costs and demand in key industries. For more detailed and up-to-date pricing information, we recommend reaching out to our sales team, who can provide specific insights based on your requirements.
What are the minimum order quantities (MOQ) for specialized grades like 13CrMo4-5 and 10CrMo9-10?
How do you ensure traceability of your Alloy Pressure Vessel Steel products throughout the supply chain?
We use unique heat numbers and barcoding systems to maintain full traceability from raw material sourcing to final delivery. Each batch is accompanied by detailed mill test certificates (MTC), and the traceability records are maintained throughout transportation, ensuring compliance with international standards.
