ASME SA 387 Grade 11 Class 2 Alloy Steel Plates
ASC LLP is a renowned supplier and stockist of high-quality ASME SA 387 Grade 11 Class 2 Alloy Steel Plates. Our commitment to excellence and customer satisfaction has established us as a trusted name in the industry. Here, we provide an in-depth look at ASME SA387 Grade 11 Class 2 Plates, exploring their properties, advantages, and various applications.
What are ASME SA387 Grade 11 Class 2 Plates?
ASME SA387 Grade 11 Class 2 Plates are chromium-molybdenum alloy steel plates designed for use in welded boilers and pressure vessels. These plates are specifically engineered to withstand high-temperature and high-pressure environments, making them ideal for the energy sector, particularly in oil, gas, and petrochemical industries. The alloy composition includes chromium and molybdenum, which enhance the steel’s strength, hardness, and resistance to corrosion and oxidation.

Properties of ASME SA387 Grade 11 Class 2 Plates
ASME SA387 Grade 11 Class 2 Plates are known for their superior mechanical properties and performance in extreme conditions. Some of the key properties include:
- High-Temperature Resistance: The chromium and molybdenum content in these plates provides excellent resistance to high temperatures, making them suitable for use in pressure vessels and boilers operating under extreme conditions.
- Strength and Durability: The alloy steel composition ensures high tensile strength and durability, which is essential for components subjected to high stress and pressure.
- Corrosion Resistance: The presence of chromium offers enhanced resistance to oxidation and corrosion, extending the lifespan of the plates even in harsh environments.
- Toughness and Hardness: These plates exhibit remarkable toughness and hardness, ensuring reliable performance and safety in critical applications.
Advantages of ASME SA387 Grade 11 Class 2 Plates
- Versatility: ASME SA387 Grade 11 Class 2 Plates are versatile and can be used in various high-temperature and high-pressure applications across different industries.
- Cost-Effective: These plates offer a cost-effective solution for manufacturing pressure vessels and boilers due to their durability and long service life.
- Improved Efficiency: The excellent thermal conductivity and resistance properties of these plates contribute to the overall efficiency of the equipment they are used in.
- Compliance with Standards: These plates are manufactured in compliance with ASME standards, ensuring high quality and reliability.


Schedule and Size Chart
Plate Thickness (mm) | Plate Width (mm) | Plate Length (mm) |
6 – 50 | 1500 – 2500 | 6000 – 12000 |
51 – 100 | 1500 – 2500 | 6000 – 12000 |
101 – 150 | 1500 – 2500 | 6000 – 12000 |
Mechanical Properties Chart
Property | Value |
Tensile Strength | 515 – 690 MPa |
Yield Strength | 310 MPa (min) |
Elongation | 18% (in 50 mm) |
Hardness | 200 HB (max) |
Specifications Chart
Specification | Details |
Standard | ASME SA387 |
Grade | 11 Class 2 |
Type | Alloy Steel Plates |
Application | Boilers, Pressure Vessels, Heat Exchangers |
Manufacturing Process | Hot Rolled |
Surface Treatment | Bare, Coated, or as specified by customer |
Chemical Composition Chart
Element | Composition (%) |
Carbon (C) | 0.05 – 0.17 |
Manganese (Mn) | 0.40 – 0.65 |
Phosphorus (P) | 0.035 (max) |
Sulfur (S) | 0.035 (max) |
Silicon (Si) | 0.50 (max) |
Chromium (Cr) | 1.00 – 1.50 |
Molybdenum (Mo) | 0.45 – 0.65 |
Physical Properties Chart
Property | Value |
Density | 7.85 g/cm³ |
Melting Point | 1425-1510°C |
Thermal Conductivity | 37.7 W/m·K at 500°C |
Specific Heat | 0.46 kJ/kg·K |
Electrical Resistivity | 0.60 µΩ·m at 20°C |
Application Chart
Industry | Application |
Petrochemical | Pressure Vessels, Reactors |
Oil and Gas | Boilers, Heat Exchangers |
Power Generation | Steam Boilers, Turbine Parts |
Chemical Processing | Processing Equipment |
Industrial Machinery | Heavy-duty Equipment Components |
Energy | Structural Components in Power Plants |
ASME SA387 Grade 11 Class 2 Plates Suppliers and Stockist
ASC LLP is proud to be a leading supplier and stockist of ASME SA387 Grade 11 Class 2 Plates. We offer a comprehensive range of these alloy steel plates in various sizes and thicknesses to meet the diverse needs of our clients. Our commitment to quality and customer satisfaction ensures that you receive the best products and services in the industry.
Why Choose ASC LLP?
At ASC LLP, we pride ourselves on providing top-quality ASME SA387 Grade 11 Class 2 Plates to our clients. Here’s why you should choose us as your supplier and stockist:
- Extensive Inventory: We maintain a vast inventory of ASME SA387 Grade 11 Class 2 Plates to ensure prompt delivery and meet your urgent requirements.
- Quality Assurance: Our plates undergo rigorous quality checks and inspections to ensure they meet the highest standards of performance and reliability.
- Competitive Pricing: We offer competitive pricing without compromising on the quality of our products.
- Customer Support: Our dedicated team of experts is always available to provide technical support and guidance to help you select the right materials for your specific needs.
- Global Reach: We have a strong global presence, enabling us to supply our products to clients worldwide.
ASME SA387 Grade 11 Class 2 Alloy Steel Plates are an excellent choice for high-temperature and high-pressure applications. With their outstanding properties and advantages, these plates ensure reliable and efficient performance in critical industrial environments. ASC LLP is your trusted partner in supplying and stocking these premium-quality plates. Contact us today to learn more about our products and services.
Global Reach
Amardeep Steel Centre boasts a robust global presence, committed to delivering unparalleled service and quality to clients around the world. Our dedication to prompt delivery and exceptional customer care sets us apart in the industry. Major corporations across the USA, Europe, Asia, and other regions place their trust in our high-quality ASME SA 387 Grade 11 Class 2 Plates. This widespread trust underscores our reputation for reliability and excellence. By consistently meeting and exceeding the expectations of our international clientele, we continue to solidify our position as a leader in the global steel market.

Countries We Export To
UNITED STATES, EUROPE, UK, UAE, SAUDI ARABIA, OMAN, KUWAIT, JORDAN, QATAR, INDONESIA, MALAYSIA, BRAZIL, SPAIN, ITALY, FRANCE, GERMANY, BAHRAIN, SRI LANKA, AZERBAIJAN, AUSTRALIA, AUSTRIA, PHILIPPINES, TURKEY, RUSSIA, IRAN, IRAQ, CANADA, KOREA, JAPAN, YEMEN, FINLAND, ZIMBABWE, HUNGARY, PORTUGAL, VIETNAM, MOROCCO, THAILAND, SOUTH AFRICA, MEXICO, SINGAPORE, GREECE, KUWAIT, POLAND, NEW ZEALAND, SWEDEN, SWITZERLAND, BELGIUM, BHUTAN, BANGLADESH, TAIWAN, ROMANIA, CAMBODIA, KAZAKHSTAN, AFGHANISTAN.