ASME SA387 Grade 5 Class 1 Plates
ASC LLP is a trusted manufacturer, exporter, and supplier of ASME SA387 Grade 5 Class 1 Plates — known for their outstanding performance in high-temperature and pressure environments. These plates are made from chromium-molybdenum alloy steel, designed to offer excellent corrosion resistance, high strength, and long service life in harsh industrial applications.
If you’re looking for ASTM A387 Gr 5 Sheet, ASME SA387 Grade 5 Alloy Steel Plates, or SA387 Grade 5 CL. 2 Alloy Steel Plate Suppliers, ASC LLP has the right solution to meet your project requirements.
What is ASME SA387 Grade 5 Class 1?
ASME SA 387 GRADE 5 Class 1 is a chromium-molybdenum (Chrome Moly) alloy steel plate primarily used in pressure vessels and boilers operating under high-temperature environments. It is classified under the ASME and ASTM standards, where:
- ASME SA387 refers to the ASME specification for pressure vessel plates made of chrome-moly alloy steel.
- Grade 5 includes around 5% chromium and 0.5% molybdenum.
- Class 1 (CL.1) indicates a lower tensile strength compared to Class 2 (CL.2), but with better weldability and toughness.
These SA387 Grade 5 Chrome Moly Plates are engineered to resist oxidation, corrosion, and thermal stress, making them ideal for energy, oil & gas, and chemical processing industries.
Key Features of ASME SA387 Grade 5 Class 1 Plates
- High Temperature Resistance: The plates can withstand extreme heat, making them ideal for boilers, pressure vessels, and heat exchangers.
- Excellent Corrosion Resistance: Thanks to chromium and molybdenum, these plates resist corrosion from gases, steam, and other aggressive chemicals.
- Superior Strength and Toughness: These plates offer a good balance of toughness and strength even in high-pressure applications.
- Good Weldability: Easy to fabricate and weld, suitable for various fabrication processes.
- Compliance with Global Standards: Manufactured according to ASTM A387 GR 5 CLASS 1 Plate and ASME SA387 Grade 5 Alloy Steel Plates specifications.
Available Sizes and Thicknesses
We supply ASME SA387 Grade 5 Class 1 Plates in:
- Thickness: 6mm to 150mm
- Width: up to 3000mm
- Length: up to 12000mm
- Custom sizes on request
Surface finish options include hot rolled, cold rolled, pickled, or polished as per client specifications.
Certification and Testing
Every ASTM A387 Gr 5 Sheet comes with:
- Mill Test Certificate as per EN 10204 3.1 / 3.2
- Third-party inspection (if required)
- Ultrasonic Testing (UT)
- Chemical and mechanical property reports
- Heat treatment details
All our plates conform to international quality standards and are traceable.
Schedule and Size Chart – ASME SA387 Grade 5 Class 1 Plates
| Thickness (mm) | Width (mm) | Length (mm) | Standard Plate Size |
| 6.0 | 1500 – 3000 | 3000 – 12000 | 6 x 2000 x 6000 mm |
| 8.0 | 1500 – 3000 | 3000 – 12000 | 8 x 2500 x 8000 mm |
| 10.0 | 1500 – 3000 | 3000 – 12000 | 10 x 2000 x 6000 mm |
| 12.5 | 1500 – 3000 | 3000 – 12000 | 12.5 x 2500 x 8000 mm |
| 16.0 | 1500 – 3000 | 3000 – 12000 | 16 x 2000 x 6000 mm |
| 20.0 | 1500 – 3000 | 3000 – 12000 | 20 x 2500 x 8000 mm |
| 25.0 | 1500 – 3000 | 3000 – 12000 | 25 x 2000 x 6000 mm |
| 30.0 – 150.0 | Custom Size | Custom Length | Cut to size available |
Mechanical Properties of ASTM A387 Gr 5 Sheet
| Property | Value |
| Tensile Strength | 60–85 ksi (415–585 MPa) |
| Yield Strength | 30 ksi (205 MPa) min |
| Elongation | 18% min in 50 mm |
| Impact Resistance | Good at elevated temps |
Specifications Chart – ASME SA387 Grade 5 Class 1
| Standard | Details |
| Grade | ASME SA387 Grade 5 Class 1 |
| Equivalent | ASTM A387 Grade 5 Class 1 |
| Material Type | Chrome-Molybdenum Alloy Steel |
| Delivery Condition | Normalized and Tempered |
| Product Type | Plate / Sheet / Cut Piece |
| Class Options | Class 1 (CL.1), Class 2 (CL.2) |
| Thickness Range | 6 mm – 150 mm |
| Width Range | Up to 3000 mm |
| Length Range | Up to 12000 mm |
| Edge Finish | Mill Edge / Slit Edge / Beveled Edge |
| Certification | EN 10204 3.1 / 3.2, IBR, NACE MR0103/MR0175 |
| Testing | UT, Radiography, PMI, Hardness, Impact |
| Surface Finish | Hot Rolled / Pickled / Polished (Optional) |
Chemical Composition of SA387 Grade 5 CL. 2 Alloy Steel Plate
| Element | Composition (%) |
| Carbon (C) | 0.15 max |
| Manganese (Mn) | 0.60 – 0.90 |
| Phosphorus (P) | 0.025 max |
| Sulfur (S) | 0.025 max |
| Silicon (Si) | 0.50 max |
| Chromium (Cr) | 4.00 – 6.00 |
| Molybdenum (Mo) | 0.45 – 0.65 |
Physical Properties Chart – ASME SA387 Grade 5 Class 1 Plates
| Property | Value / Description |
| Density | 7.85 g/cm³ |
| Tensile Strength | 60 – 85 ksi (415 – 585 MPa) |
| Yield Strength | ≥ 30 ksi (205 MPa) |
| Elongation | ≥ 18% in 50 mm |
| Hardness (Brinell) | 130 – 180 HB (approx.) |
| Modulus of Elasticity | ~ 200 GPa |
| Thermal Conductivity | ~ 42.7 W/m·K (at 500°C) |
| Melting Point | ~ 1425°C – 1510°C |
| Specific Heat | 460 J/kg·K |
| Thermal Expansion | ~11.7 ×10⁻⁶ /K (at 20–100°C) |
| Weldability | Excellent – Suitable for most welding methods |
Applications of SA387 Grade 5 CL.1 Plates
These plates are ideal for industries where resistance to heat and corrosion is critical. Typical applications include:
- Pressure Vessels
- Heat Exchangers
- Boilers
- Reactors
- Petrochemical Units
- Thermal Power Plants
- Oil Refineries
- Steam Generators
Whether it’s the chemical processing, nuclear, or offshore oil & gas industry, A387/SA387 Chrome Moly Plates are widely preferred.
Why Choose ASC LLP for A387/SA387 Chrome Moly Plates?
- Premium Quality Material: All our ASME SA387 Grade 5 Alloy Steel Plates are sourced from reputed mills and rigorously tested.
- Wide Range of Sizes & Thicknesses: We offer a comprehensive inventory to match varied project specifications.
- Global Export Services: ASC LLP supplies ASTM A387 GR 5 CLASS 1 Plate to over 70 countries, including the UK, UAE, Germany, and the USA.
- Custom Cutting & Machining: Plates can be cut, beveled, or machined according to your project needs.
- Fast Delivery & Competitive Prices: As a stockist and direct distributor, we offer competitive rates and prompt delivery.
ASME SA387 Grade 5 Class 1 Plates are essential materials for industries dealing with high temperature and pressure. With outstanding strength, corrosion resistance, and weldability, they’re a trusted choice in power plants, chemical industries, and refineries worldwide.
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 5 Class 1 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.
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