Navgraha Steels INC is a leading supplier of SA 387 Gr 11 Cl 2 Plates, Sheets & Coils, available from trusted global mills like Sail, AMNS, JSPL, Evonith, Nippon Yakin, Outokumpu, Special Metals, VDM, and ATI. This chromium-molybdenum alloy steel is engineered for boilers, pressure vessels, and petrochemical plants operating at elevated temperatures and high pressures. Each supply comes with mill test certificates (EN 10204 3.1/3.2), IBR approvals, and export documentation.
When you’re sourcing SA 387 Gr.11 Cl.2 Alloy Steel Plates, you’re not just ordering steel
When your project depends on high-temperature boiler and pressure vessel steel
When your project runs on boilers, refineries, or high-pressure vessels
SA 387 Gr 11 Cl 2 is a Cr-Mo alloy steel under ASTM/ASME standards.
Buyers choose SA 387 Gr 11 Cl 2 for thermal stability, pressure resistance, and durability in refinery & power applications.
reactors, columns, separators, hydrogen vessels
superheaters, steam boilers, HRSG units
pressure vessels, scrubbers, and sour service equipment
urea plants, fertilizer reactors, heat exchangers
high-temperature pressure systems
EPC projects requiring long-life vessel materials
| Property | Typical Value | Notes |
|---|---|---|
| Tensile Strength | 415–585 MPa | Stable under high temperature load |
| Yield Strength | ≥ 205 MPa | Ensures safety margin in pressure service |
| Elongation | 18–22% | Provides ductility for fabrication |
| Impact Test (Cl 2) | 27J at -18°C | Improved toughness vs Class 1 |
Class 2 grade has better notch toughness than Class 1, making it more reliable for critical equipment.
| Element | Typical Range % | Function |
|---|---|---|
| Carbon (C) | 0.05–0.20 | Strength & hardness |
| Chromium (Cr) | 1.00–1.50 | Corrosion & oxidation resistance |
| Molybdenum (Mo) | 0.45–0.65 | Creep resistance, high-temp stability |
| Manganese (Mn) | 0.30–0.60 | Improves toughness |
| Silicon (Si) | 0.50–1.00 | Enhances oxidation resistance |
| Phosphorus (P) | ≤ 0.025 | Kept low for weldability |
| Sulfur (S) | ≤ 0.010 | Kept low for crack resistance |
This composition gives SA 387 Gr 11 Cl 2 excellent thermal stability, weldability, and creep resistance.
SA 387 Gr 11 Cl 2 is covered under ASTM A387 / ASME SA387 standards for chromium-molybdenum alloy steel plates.
Global Equivalents:
Available Brands at Navgraha Steels INC:
Sail, AMNS, JSPL, Evonith, Nippon Yakin, Outokumpu, Special Metals, VDM, ATI
Multi-mill supply ensures compliance with EPC vendor lists and global approvals.
We maintain ready stock of SA 387 Gr 11 Cl 2 in:
This allows buyers to order project-specific dimensions, minimizing fabrication delays.
Ensures thermal stability and long service life in refinery and power projects.
Plates are supplied in fabrication-ready condition, reducing project lead time.
Trusted by refineries, EPC contractors, and power plants worldwide.
Flexible supply makes SA 387 Gr 11 Cl 2 suitable for diverse high-temperature projects.
Navgraha Steels INC exports SA 387 Gr 11 Cl 2 Plates, Sheets & Coils globally with strong demand from EPC contractors and refineries.
Export Destinations
Packaging Standards:
Ensuring safe delivery with full traceability for international projects
Procurement teams select SA 387 Gr 11 Cl 2 when:
It is the preferred grade for refinery, chemical, and power plant vessels.
Every order of SA 387 Gr 11 Cl 2 from Navgraha comes with:
Buyers receive compliance-backed steel trusted in global EPC contracts
Class 2 offers better notch toughness and impact resistance compared to Class 1.
Designed for service up to ~600°C.
Yes, in addition to plates, we supply coils and sheets.
Sail, AMNS, JSPL, Evonith, Nippon Yakin, Outokumpu, Special Metals, VDM, ATI.
Yes, IBR-approved plates are supplied for Indian boiler projects.
Yes, NACE MR0175/MR0103 compliance is available.
415–585 MPa.
27J at -18°C.
Yes, SGS, BV, TÜV, DNV & Lloyd’s inspections are available.
Yes, CNC, plasma, and waterjet cutting services available.
Typically 2–6 weeks depending on size & certification.
Yes, regular supply to UAE, Saudi Arabia, Oman & Qatar.
Yes, it is the EN equivalent grade.
Price depends on thickness, size & mill origin – contact us for a live quote.
Navgraha Steels INC provides SA 387 Gr 11 Cl 2 Plates, Sheets & Coils with:
