A387 | Alloy Pressure Vessel Steel
A387 | Alloy Pressure Vessel Steel
A387 is an alloy pressure vessel steel under ASTM, used in high-temperature environments. The A stands for Alloy, and 387 refers to its specification. It offers a good balance of strength and heat resistance, suitable for boilers and pressure vessels, with excellent weldability and corrosion resistance.
Description
What is A387？
A387 is a solid alloy steel made of chromium (1%-2.5%) and molybdenum (0.5%-1%). It is processed through hot rolling. This steel offers excellent strength and resistance to high temperatures and corrosion, making it ideal for pressure vessels and boilers in industries like power generation and petrochemicals. Subcategories include ASTM A387 Grades 2, 12, 11, 22, 22L, 21, 21L, 5, 9, and 91. All other grades come in two tensile strength levels except for Grades 21L, 22L, and 91.Why Choose A387 ALloy Pressure Vessel Steel?
Are you looking for steel that performs well in high-temperature pressure vessels? We recommend A387 alloy pressure vessel steel. It’s ideal for industries like power generation and petrochemicals due to its excellent heat and corrosion resistance. Choosing A387 means reliable, easy-to-weld steel that reduces long-term maintenance, giving you both safety and cost benefits. A387 outperforms other steels with its high strength and flexibility in extreme environments, especially where heat stability is crucial. For similar high-temperature demands, alternatives like A335, 12Cr1MoV, or P91 are also suitable for specific conditions.Product Specification
| Category | Details |
| Quality Standard | ASTM A387/A387M |
| Certifications | ISO 9001, CE, AD 2000-W0, PED, ASME Section II, LR, DNV, BV, SGS |
| Thickness | 6-150mm |
| Width | 900-4800mm |
| Length | 3000-25000mm |
| Weight | Depends on length and width |
| Outer diameter (OD) | Pipes: 21 mm to 750 mm, Bars: 10 mm to 300 mm |
| Inner diameter (ID) | Pipes: 15 mm to 750 mm |
| Tolerances | Thickness: ±0.3mm to ±0.5mm, Width: ±3mm to ±5mm, Length: ±10mm to ±20mm |
| Technology | Hot Rolling, Cold Rolling |
| Processing Service | Bending, Welding, Decoiling, Cutting, Punching |
| Shapes | Pressure Vessel Steel Plate, Pressure Vessel Steel Sheet, Pipes, Profiles |
| MOQ (Minimum Order Quantity) | 5 tons (according to the actual tonnage) |
| Lead Time | Typically 7-20 days |
| Price Terms & Payment | Based on customer requirements, T/T, L/C |
| Ports | Qingdao, Lianyungang, Dalian |
| Export Countries | Southeast Asia, Central Asia, Europe, Russia, South America, Middle East, etc. |
| Shipping Method | Offers Sea, Air and Customized Shipping |
Chemical Compositions
| Element | A387 Grade 5 Content (%) | A387 Grade 11 Content (%) | A387 Grade 22 Content (%) |
|---|---|---|---|
| Carbon, C | 0.15 max | 0.05-0.17 | 0.05-0.15 |
| Manganese, Mn | 0.30-0.60 | 0.30-0.60 | 0.30-0.60 |
| Phosphorus, P | 0.025 max | 0.025 max | 0.025 max |
| Sulfur, S | 0.025 max | 0.025 max | 0.025 max |
| Silicon, Si | 0.50 max | 0.50 max | 0.50 max |
| Chromium, Cr | 4.00-6.00 | 1.00-1.50 | 2.00-2.50 |
| Molybdenum, Mo | 0.45-0.65 | 0.45-0.65 | 0.90-1.10 |
Mechanical Properties
| Property | Grade 5 (Metric) | Grade 5 (Imperial) | Grade 11 (Metric) | Grade 11 (Imperial) | Grade 22 (Metric) | Grade 22 (Imperial) |
|---|---|---|---|---|---|---|
| Tensile Strength (MPa / ksi) | 415-585 MPa | 60-85 ksi | 515-690 MPa | 75-100 ksi | 515-690 MPa | 75-100 ksi |
| Yield Strength (MPa / ksi) | 240 MPa | 35 ksi | 275 MPa | 40 ksi | 275 MPa | 40 ksi |
| Brinell Hardness | 130-170 HBW | 130-170 HBW | 140-190 HBW | 140-190 HBW | 140-190 HBW | 140-190 HBW |
| Rockwell Hardness (HRB) | 70-85 HRB | 70-85 HRB | 75-90 HRB | 75-90 HRB | 75-90 HRB | 75-90 HRB |
| Vickers Hardness (HV) | 130-170 HV | 130-170 HV | 140-190 HV | 140-190 HV | 140-190 HV | 140-190 HV |
| Elongation (%) | 20-22% | 20-22% | 18-20% | 18-20% | 18-20% | 18-20% |
| Elastic Modulus (GPa / Mpsi) | 190-210 GPa | 27.5-30.5 Mpsi | 190-210 GPa | 27.5-30.5 Mpsi | 190-210 GPa | 27.5-30.5 Mpsi |
Data After Normalizing Processing
| Property | Grade 5 (Metric) | Grade 5 (Imperial) | Grade 11 (Metric) | Grade 11 (Imperial) | Grade 22 (Metric) | Grade 22 (Imperial) |
|---|---|---|---|---|---|---|
| Tensile Strength (MPa / ksi) | 485-620 MPa | 70-90 ksi | 585-760 MPa | 85-110 ksi | 585-760 MPa | 85-110 ksi |
| Yield Strength (MPa / ksi) | 275 MPa | 40 ksi | 310 MPa | 45 ksi | 310 MPa | 45 ksi |
| Brinell Hardness | 150-190 HBW | 150-190 HBW | 160-210 HBW | 160-210 HBW | 160-210 HBW | 160-210 HBW |
| Rockwell Hardness (HRB) | 75-90 HRB | 75-90 HRB | 80-95 HRB | 80-95 HRB | 80-95 HRB | 80-95 HRB |
| Vickers Hardness (HV) | 150-190 HV | 150-190 HV | 160-210 HV | 160-210 HV | 160-210 HV | 160-210 HV |
| Elongation (%) | 18-20% | 18-20% | 16-18% | 16-18% | 16-18% | 16-18% |
| Elastic Modulus (GPa / Mpsi) | 190-210 GPa | 27.5-30.5 Mpsi | 190-210 GPa | 27.5-30.5 Mpsi | 190-210 GPa | 27.5-30.5 Mpsi |
Industries & Applications
| Industries | Products |
|---|---|
| Power Generation | Boiler Drums, Heat Exchangers, Turbines, Pressure Vessels, Superheater Tubes |
| Oil & Gas | Crude Oil Distillation Towers, Reactor Vessels, Heat Recovery Steam Generators, Gas Processing Equipment, Pipeline Components |
| Petrochemical | Catalytic Crackers, Reactors, Fractionating Towers, Steam Reformers, Chemical Process Vessels |
| Refining | Hydrocrackers, Desulfurization Units, Fractionators, Vacuum Towers, Crude Oil Preheaters |
| Shipbuilding | Engine Components, Storage Tanks, Steam Boilers, Pressure Cylinders, Heat Exchanger Systems |
| Chemical Processing | High-Pressure Reactors, Heat Exchangers, Hydrogenation Reactors, Ammonia Plants, Fertilizer Production Equipment |
Packing
At SteelPRO Group, we ensure that A387 alloy pressure vessel steel is packed with the highest standards of care and precision. Here are four key advantages of our packing process:
- Secure Wrapping: We use protective materials like waterproof wrapping and edge protectors to shield the steel from moisture and damage during transportation.
- Reinforced Crating: We use reinforced wooden crates or metal frames for larger plates and bars to prevent movement and maintain structural integrity during shipping.
- Custom Size Packing: We offer customized packing solutions based on the size and shape of the steel, ensuring efficient space utilization and reduced handling risks.
- Compliance with Safety Standards: Our packing adheres to international transport standards, ensuring the steel arrives safely without compromising its quality, even over long distances.
These methods guarantee the protection and safe delivery of your A387 steel products, ensuring they are ready for immediate use upon arrival.
Machining
A387 Heat Treatment Product Options
Here’s a summary of the types of ASTM A387 pressure vessel steel we offer with specific heat treatments:
- Grade 5 (Normalized): Heated to 900-950°C for enhanced strength and uniformity in moderate to high-temperature applications.
- Grade 11 & Grade 12 (Normalized and Tempered): Heated to 900-960°C and tempered between 600-720°C. These grades are ideal for high-pressure environments, offering improved toughness and thermal stability.
- Grade 22 (Normalized and Tempered): Heated to 900-960°C, tempered between 620-760°C, providing excellent creep resistance in elevated temperatures.
- Grade 9 (Normalized): Heated to 900-950°C, delivering strength with moderate corrosion resistance at high temperatures.
- Grade 91 (Quenched and Tempered): Heated to 1000-1050°C, followed by quenching and tempering, designed for high-stress applications with long-term heat resistance.
- Additional Forms:
- As-Rolled: Available in an un-heat-treated condition, suitable for customers handling specific heat treatments.
- Annealed: We also offer annealed A387 steel for applications requiring high ductility and ease of fabrication.
We also provide other heat-treated A387 grades based on your project needs.
A387 Surface Finish
Here’s a list of surface treatments we can offer for A387 steel:
- Shot Blasting: Removes scale and surface impurities, improving the adhesion of coatings and providing a clean finish.
- Pickling and Passivation: Removes oxides and provides corrosion resistance by forming a passive layer on the surface.
- Galvanizing: Applies a zinc coating for enhanced corrosion protection in harsh environments.
- Phosphate Coating: Increases corrosion resistance and improves paint adhesion.
- Painting/Coating: Protective or decorative coatings enhance corrosion resistance and aesthetic appeal.
- Polishing: Improves surface smoothness and appearance, reducing surface roughness.
- Anti-Corrosion Oil Coating: Prevents rust and corrosion during transportation and storage.
Custom surface treatment requirements can be accommodated upon request.
Disclaimer
The above information on heat treatment options and surface finish processes for A387 steel reflects the services provided by SteelPRO Group. The suitability of these services for your specific applications may vary depending on project requirements and conditions. We recommend consulting with our technical team or a metallurgical expert to ensure the right treatment and finishing are selected for optimal performance. SteelPRO Group assumes no liability for the application of this information without proper consultation.
A387 Pressure Vessel Steel Manufacturer
As a leading supplier of A387 Alloy Pressure Vessel Steel, we offer a complete package tailored to meet your needs:
- Competitive Pricing and Flexible Delivery: We provide competitive pricing without compromising on delivery timelines, ensuring your project stays on track.
- Comprehensive Product Range: We supply the full range of A387 grades with options for various heat treatments, offering solutions for a wide array of applications.
- Strict Quality Assurance and Certifications: Each batch of A387 steel is subjected to stringent quality control, with full certification, including EN 10204 3.1/3.2, ensuring top-grade performance and reliability.
- Custom Solutions: We offer custom-cutting, processing, and heat treatment options to meet your exact specifications, giving you tailored solutions for any project.
- Safe Packaging and Efficient Logistics: We ensure safe packaging to protect your products during transit and provide efficient logistics, keeping you informed with real-time delivery updates.
- Trusted Expertise: With our experience and professionalism, we stand as an authoritative supplier of A387 Alloy Pressure Vessel Steel, delivering top-quality products with the utmost reliability.
This approach ensures we provide the material you need and the support, flexibility, and quality you expect.
Our Service
SteelPRO Group – manufacturer and solution provider for special steel, offering multi-industry application solutions and customised services, 100% quality free, accompanying customers in their growth!
Our Quality Control
- Roundness
- Tolerance
- Microstructure
- Non-Destructive Testing
- Destructive Testing
- Process Control
Service Integration Processing
- Welding
- Metal Fabrication
- CNC Machining
- Lathe
- Forming
What Are The Available Grades Of A387 Steel?
We offer a full range of A387 grades, including Grade 5, 9, 11, 12, 22, and 91, suitable for various pressure vessel applications.
Can You Provide Traceability For Each A387 Order?
Yes, we provide full traceability with all orders, including mill certificates and production records to ensure compliance with industry standards.
How Do You Ensure Consistent Quality For A387 Steel?
We have a strict quality control process, including thorough testing and certification for each batch, ensuring consistent quality across all grades.
What Is The Lead Time For Custom Orders?
Lead times vary based on the complexity of the order, but we typically provide an estimated timeframe upon order confirmation, ensuring timely delivery.
How Is The Pickup Process Arranged For Orders?
We coordinate the shipment to the designated port, where customers can arrange for pickup. All necessary documentation and support are provided to ensure a smooth collection process.
Can You Handle Large-Scale Orders?
Yes, we have the capacity to fulfill both small and large-scale orders with reliable production processes and supply chain management.
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