ASME SA387 Grade 12 Class 2 Alloy Steel Plates
Welcome to ASC LLP, your trusted dealer and stockist of ASME SA387 Grade 12 Class 2 Plates. As a leading provider of high-quality alloy steel plates, we are committed to delivering products that meet the stringent demands of various industries. Our ASME SA387 Grade 12 Class 2 Alloy Steel Plates are designed to offer superior performance, durability, and reliability.
What are ASME SA387 Grade 12 Class 2 Plates?
ASME SA387 Grade 12 Class 2 Plates are high-quality alloy steel plates designed for use in elevated temperature environments. These plates are made from chromium-molybdenum alloy steel, which provides excellent resistance to heat and corrosion. The “Grade 12” designation refers to the specific alloy composition, while “Class 2” indicates the quality and tensile strength of the plates.

Properties of ASME SA387 Grade 12 Class 2 Plates
The properties of ASME SA387 Gr12 Cl2 Plates make them suitable for a wide range of applications in industries such as petrochemical, oil and gas, and power generation. Some of the key properties include:
- High Temperature Resistance: These plates can withstand high temperatures, making them ideal for use in environments where heat resistance is crucial.
- Corrosion Resistance: The chromium and molybdenum content in the alloy provides excellent resistance to corrosion and oxidation.
- Mechanical Strength: ASME SA387 Gr12 Cl2 Plates offer high tensile and yield strength, ensuring durability and reliability under high stress conditions.
- Toughness: These plates maintain their toughness even at elevated temperatures, which is essential for maintaining structural integrity.
- Fabrication and Weldability: The alloy composition allows for easy fabrication and welding, making these plates versatile for various applications.
Advantages of ASME SA387 Grade 12 Class 2 Plates
The advantages of using ASME SA387 Gr12 Cl2 Plates are numerous, contributing to their widespread use in critical industries:
- Enhanced Performance: The superior heat and corrosion resistance properties ensure optimal performance even in the most demanding conditions.
- Longevity: The high durability and strength of these plates lead to a longer service life, reducing the need for frequent replacements and maintenance.
- Versatility: The excellent fabrication and weldability make these plates suitable for a variety of applications, including pressure vessels, boilers, and heat exchangers.
- Cost-Effective: Despite their high performance, ASME SA387 Gr12 Cl2 Plates offer a cost-effective solution due to their longevity and low maintenance requirements.
- Compliance with Standards: These plates comply with ASME standards, ensuring that they meet the necessary quality and safety requirements.


Schedule and Size Chart
Plate Thickness (mm) | Width (mm) | Length (mm) |
6.0 – 10.0 | 1000 – 2500 | 6000 – 12000 |
10.1 – 20.0 | 1000 – 2500 | 6000 – 12000 |
20.1 – 40.0 | 1000 – 2500 | 6000 – 12000 |
40.1 – 60.0 | 1000 – 2500 | 6000 – 12000 |
60.1 – 80.0 | 1000 – 2500 | 6000 – 12000 |
80.1 – 100.0 | 1000 – 2500 | 6000 – 12000 |
Mechanical Properties Chart
Property | Value |
Tensile Strength, MPa | 485 – 620 |
Yield Strength, MPa | ≥ 275 |
Elongation (%) | ≥ 18 |
Hardness, HBW | ≤ 250 |
Impact Energy, J | ≥ 27 (at -20°C) |
Specifications Chart
Specification | Details |
Standard | ASME SA387 |
Grade | Grade 12 Class 2 |
Alloy Composition | Chromium-Molybdenum Alloy Steel |
Heat Treatment | Quenched and Tempered |
Thickness Range | 6.0 mm to 100.0 mm |
Width Range | 1000 mm to 2500 mm |
Length Range | 6000 mm to 12000 mm |
Chemical Composition Chart
Element | Composition (%) |
Carbon (C) | 0.05 – 0.17 |
Manganese (Mn) | 0.40 – 0.65 |
Phosphorus (P) | ≤ 0.035 |
Sulfur (S) | ≤ 0.035 |
Silicon (Si) | 0.50 max |
Chromium (Cr) | 0.80 – 1.25 |
Molybdenum (Mo) | 0.45 – 0.65 |
Physical Properties Chart
Property | Value |
Density | 7.85 g/cm³ |
Melting Point | 1425-1510°C |
Thermal Conductivity | 36.3 W/m·K (at 100°C) |
Specific Heat | 0.460 J/g·K (at 25°C) |
Electrical Resistivity | 0.15 µΩ·m (at 20°C) |
Application Chart
Industry | Application |
Petrochemical | Pressure vessels, reactors, heat exchangers |
Oil and Gas | Pipelines, storage tanks, high-temperature equipment |
Power Generation | Boilers, turbines, high-pressure applications |
Chemical Processing | Reactors, processing equipment, heat exchangers |
Industrial Boilers | Construction of high-temperature industrial boilers |
Why Choose ASC LLP?
As a renowned dealer and stockist of ASME SA387 Grade 12 Class 2 Plates, ASC LLP is committed to providing high-quality products and exceptional service. Here’s why you should choose us:
- Extensive Inventory: We maintain a vast inventory of ASME SA387 Gr12 Cl2 Plates, ensuring that we can meet your requirements promptly.
- Quality Assurance: Our plates undergo rigorous quality checks to ensure they meet the highest standards of performance and reliability.
- Competitive Pricing: We offer competitive prices without compromising on quality, providing you with the best value for your investment.
- Expertise and Experience: With years of experience in the industry, our team of experts can provide you with the technical support and guidance you need.
- Customer Satisfaction: Our commitment to customer satisfaction drives us to deliver products and services that exceed your expectations.
ASME SA387 Grade 12 Class 2 Alloy Steel Plates are a reliable and high-performance solution for applications requiring superior heat and corrosion resistance. At ASC LLP, we take pride in being your trusted dealer and stockist, offering top-quality plates that meet your specific needs. Whether you are in the petrochemical, oil and gas, power generation, or chemical processing industry, our ASME SA387 Gr12 Cl2 Plates will provide the durability and performance you require.
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 SA387 Grade 12 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.