ASME SA387 Grade 9 Class 2 Alloy Steel Plates
At ASC LLP, we specialize in providing high-quality ASME SA387 Grade 9 Class 2 Plates that are engineered for use in high-temperature and pressure environments. These alloy steel plates are a part of the ASME SA387 Grade 9 Alloy Steel Plates family, known for their excellent strength, durability, and resistance to corrosion, even under extreme conditions.
Whether you are in the power generation, chemical processing, oil and gas, or petrochemical industry, our ASME SA387 Grade 9 Alloy Steel Plates Class 2 are a trusted solution for critical applications.
What is ASME SA387 Grade 9 Class 2 Plate?
ASME SA387 Grade 9 Class 2 Plates are pressure vessel quality alloy steel plates primarily used in welded boilers and pressure vessels operating at elevated temperatures. The plate contains Chromium (Cr) and Molybdenum (Mo), which give it excellent resistance to high-temperature oxidation and sulfide corrosion.
The “Class 2” rating indicates its enhanced mechanical properties, particularly higher tensile strength and improved creep resistance compared to Class 1 plates.
Key Features of SA 387 Gr 9 Plate
- Excellent performance at high temperatures
- High creep resistance
- Superior corrosion resistance
- Enhanced tensile and yield strength
- Weldable and formable
- Complies with global standards like ASME, ASTM, EN, DIN
Benefits of Using SA387 Chromium-Molybdenum Steel Gr 9 Class 2 Steel Plates
- Long Service Life: Performs well under high temperatures, reducing downtime and maintenance costs.
- Corrosion Resistance: Protects against oxidation, sulfide corrosion, and chemical attacks.
- Superior Strength: Maintains structural integrity under stress and pressure.
- Weldability: Easily welded using conventional welding methods, making installation easier and faster.
- Versatility: Suitable for various applications across multiple industries.
ASME SA387 Grade 9 Class 2 Plates – Schedule & Size Chart
| Plate Thickness (mm) | Plate Width (mm) | Plate Length (mm) | Schedule (Approx.) |
| 6 mm | 1250 / 1500 | 2500 / 3000 | Sch 20 |
| 8 mm | 1500 / 1800 | 3000 / 6000 | Sch 30 |
| 10 mm | 1500 / 1800 / 2000 | 3000 / 6000 | Sch 40 |
| 12 mm | 1500 / 2000 / 2500 | 6000 / 12000 | Sch 60 |
| 16 mm | 1500 / 2000 / 2500 | 6000 / 12000 | Sch 80 |
| 20 mm | 2000 / 2500 / 3000 | 6000 / 12000 | Sch 100 |
| 25 mm | 2000 / 2500 / 3000 | 6000 / 12000 | Sch 120 |
| 30 mm | 2000 / 2500 / 3000 | 6000 / 12000 | Sch 140 |
| 40 mm | 2000 / 2500 / 3000 | 6000 / 12000 | Sch 160 |
| 50 mm and above | As per order | Up to 12000 | Custom / XXS |
Mechanical Properties of ASTM A387 GR 9 CLASS 2
| Property | Value |
| Tensile Strength | 515 – 690 MPa |
| Yield Strength | Min 380 MPa |
| Elongation | Min 19% |
| Hardness (HBW) | Max 250 |
SA387 Grade 9 CL. 2 Alloy Steel Plate Specifications
| Specification | Details |
| Standard | ASME SA387 / ASTM A387 |
| Grade | Grade 9 Class 2 |
| Thickness | 6mm to 150mm |
| Width | 1500mm to 3000mm |
| Length | Up to 12000mm or custom cut |
| Finish | Hot Rolled, Pickled, Sand Blasted, Painted |
| Edge | Mill Edge, Slit Edge |
| Delivery Condition | Normalized and Tempered, Quenched and Tempered |
| Certification | EN 10204 3.1 / 3.2, NACE MR 0103, IBR, PED 97/23/EC |
Composition of SA387 Grade 9 Alloy Steel Plates
| Element | Content (%) |
| Chromium (Cr) | 8.0 – 10.0% |
| Molybdenum (Mo) | 0.90 – 1.10% |
| Carbon (C) | 0.15% max |
| Manganese (Mn) | 0.40 – 0.65% |
| Phosphorus (P) | 0.025% max |
| Sulfur (S) | 0.025% max |
| Silicon (Si) | 0.50 – 1.00% |
Physical Properties Chart – ASME SA387 Grade 9 Class 2 Plates
| Property | Unit | Typical Value |
| Density | g/cm³ | 7.80 |
| Melting Point | °C | 1425 – 1510 |
| Thermal Conductivity | W/m·K | 24.9 at 100°C |
| Specific Heat Capacity | J/kg·K | 460 |
| Coefficient of Thermal Expansion | µm/m°C | 10.8 (at 20–100°C) |
| Electrical Resistivity | µΩ·m | 0.20 |
| Modulus of Elasticity | GPa | 190 – 210 |
| Hardness (Brinell) | HB | ≤ 250 (max as per standard) |
| Magnetic Properties | — | Ferromagnetic |
| Creep Resistance | — | Excellent (under prolonged high temp) |
Equivalent Grades for ASME SA387 Gr 9 Cl. 2 Plates
| Standard | Equivalent Grade |
| ASTM | A387 Grade 9 Class 2 |
| EN | 10CrMo9-10 |
| DIN | 1.7380 |
| BS | 620B |
| UNS | K90941 |
Applications of ASME SA387 Grade 9 Alloy Steel Plates Class 2
Due to their high-temperature and corrosion-resistant properties, SA387 Grade 9 CL. 2 Alloy Steel Plates are widely used in:
- Power Plants: For boilers, steam pipes, and turbines
- Petrochemical Plants: Pressure vessels and reactors
- Oil and Gas Industries: Heat exchangers and gas separators
- Chemical Processing: Tanks, columns, and pressure vessels
- Refineries: For handling high-temperature fluids and gases
- Shipbuilding & Marine Engineering: Structural applications under high stress
Why Choose ASC LLP as Your SA387 Grade 9 Alloy Steel Plates Supplier?
At ASC LLP, we are one of the most trusted SA387 Grade 9 Alloy Steel Plates Suppliers in India and globally. Here’s what sets us apart:
- High Quality Assurance: All our products undergo strict quality control processes, including ultrasonic testing, radiographic testing, and chemical analysis, ensuring top-notch quality.
- Wide Inventory: We maintain a vast inventory of ASME SA387 Grade 9 Class 2 Plates in various sizes, finishes, and thicknesses to meet urgent and bulk project requirements.
- Custom Cutting and Processing: Need a custom size or shape? We offer cut-to-length, CNC plasma cutting, and edge preparation services.
- Global Export Network: We export to more than 60 countries, including the UK, UAE, South Africa, Malaysia, USA, and Australia. Our logistics team ensures fast, secure, and on-time delivery.
- Competitive Pricing: As top-tier SA387 Grade 9 CL. 2 Alloy Steel Plate Suppliers, we offer competitive rates with bulk order discounts and flexible payment terms.
Global Reach
ASC LLP 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 9 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.
Follow us on:
ASME SA387 Grade 9 Class 2 Plates, ASME SA387 Grade 9 Alloy Steel Plates, ASME SA387 Grade 9 Alloy Steel Plates Class 2 Plates, SA387 Grade 9 CL. 2 Alloy Steel Plate Suppliers, ASTM A387 GR 9 CLASS 2, SA 387 Gr 9 Plate, Class 2 Alloy Steel Plate Specifications, SA387 Grade 9 Alloy Steel Plates Suppliers in India, SA387 Chromium-Molybdenum Steel Gr 9 Class 2 Steel Plates
