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SA 387 Gr.91 Cl.2 Plates Supplier & Exporter in India – Navgraha Steels INC (Mumbai, Maharashtra)

When sourcing alloy steel plates for boilers, power plants, or refineries, buyers cannot afford mistakes. A wrong grade, missing certification, or late delivery doesn’t just mean material loss—it can cost crores in shutdown penalties.

At Navgraha Steels INC, we eliminate those risks. As a trusted supplier and exporter of SA 387 Gr.91 Cl.2 plates, we provide IBR/PED/EN 10204 certified material with guaranteed compliance, on-time dispatch, and export-ready packaging. Our buyers—from India to GCC, Africa, and Europe—trust us not just for plates, but for peace of mind on critical projects.

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What Are SA 387 Gr.91 Cl.2 Alloy Steel Plates and Why Do Power & Refinery Projects Rely on Them?

SA 387 Grade 91 Class 2 is a high Chromium-Molybdenum-Vanadium (Cr-Mo-V) alloy steel plate designed for high-pressure, high-temperature service. Known for its exceptional creep strength and oxidation resistance, it is widely used in:

  • Boilers & heat exchangers operating at 600°C+
  • Power plant components requiring creep rupture strength
  • Refinery pressure vessels exposed to thermal cycling
  • Nuclear & thermal energy projects where compliance is non-negotiable

In Cl.2 condition, these plates are tempered for higher strength and durability, making them indispensable in long-cycle, high-temperature applications.

The Procurement Pain Points Buyers Face While Sourcing SA 387 Gr.91 Cl.2 Plates

Procurement managers and EPC buyers often face:

  •  Wrong class (Cl.1 instead of Cl.2) – leads to site rejection and delays.
  •  No IBR, PED, or EN 10204 certification – project non-compliance risk.
  •  Long lead times – penalties during shutdowns or EPC schedules.
  • Unreliable packing – corrosion or damage during sea transit.
  •  Hidden costs – unexpected freight, duty, or quality failures.

At Navgraha Steels INC, we address these with: ready stock, global mill tie-ups, transparent pricing, seaworthy packaging, and guaranteed certification.

Applications of SA 387 Gr.91 Cl.2 Plates Across Global Industries

SA 387 Gr.91 Cl.2 plates are chosen by engineers, EPC contractors, and plant managers for projects where strength, compliance, and longevity matter:

  • Boilers & Heat Exchangers – long service life under extreme stress.
  •  Thermal & Nuclear Power Plants – withstanding continuous high temperatures.
  • Refineries & Petrochemical Units – pressure vessels, heaters, reactors.
  • Process Equipment in EPC Projects – storage tanks, piping components.

Wherever heat + pressure + compliance meet, SA 387 Gr.91 Cl.2 plates deliver absolute reliability.

Mechanical Properties of SA 387 Gr.91 Cl.2 Chrome Moly Plates

SA 387 Gr.91 Cl.2 plates are engineered for superior creep strength, tensile performance, and toughness under elevated temperatures:

  • Yield Strength: 415 – 585 MPa
  • Tensile Strength: 585 – 760 MPa
  • Elongation: 18 – 22% (excellent formability for fabrication)
  • Creep Rupture Strength: High stability at 600°C+ service temperatures
  • Impact Resistance: Maintains toughness in prolonged heat exposure

Buyer Advantage: Assures safety, compliance, and longevity for power plants, boilers, and refinery equipment.

Chemical Composition of ASTM A387 Gr.91 Cl.2 Alloy Steel Plates

The unique Cr-Mo-V (Chromium-Molybdenum-Vanadium) chemistry ensures long-term strength, oxidation resistance, and creep protection:

Element Content (%)
Carbon (C) 0.08 – 0.12
Manganese (Mn) 0.30 – 0.60
Silicon (Si) 0.20 – 0.50
Chromium (Cr) 8.00 – 9.50
Molybdenum (Mo) 0.85 – 1.05
Vanadium (V) 0.18 – 0.25
Niobium (Nb) 0.06 – 0.10
Phosphorus (P) ≤ 0.020
Sulphur (S) ≤ 0.010

Buyer Advantage: This chemistry makes Gr.91 Cl.2 one of the strongest chrome-moly grades, ensuring structural integrity under high heat & stress.

Standards, Certifications & Equivalent Grades of SA 387 Gr.91 Cl.2 Plates

  1. Standards: ASTM A387 / ASME SA 387 (Boiler & Pressure Vessel Code)
  2. Equivalent Grades: EN 10028-2 X10CrMoVNb9-1, DIN 1.4903, BS 622-515C
  3. Certifications: EN 10204 3.1 / 3.2, IBR, PED, CE Marking
  4. Third-Party Inspection: SGS, TUV, BV, Lloyd’s Register

Buyer Advantage: 100% compliance assurance for international EPC, refinery, and nuclear projects.

Thickness Range, Widths & Plate Dimensions We Supply

At Navgraha Steels INC, Mumbai, we maintain ready stock and mill-rolled allocations:

  1. Thickness: 6 mm – 150 mm
  2. Width: 1500 mm – 3000 mm
  3. Length: 6000 mm – 12000 mm
  4. Supply Condition: Normalized + Tempered (N+T)
  5. Processing: Cut-to-size, CNC profile cutting, edge preparation

Buyer Advantage: Flexible sizing reduces fabrication time, material waste, and cost overruns.

Heat Treatment, Weldability & Elevated Temperature Performance

  • Condition Supplied: Normalized + Tempered (N+T)
  • Weldability: Requires controlled preheating & PWHT to ensure joint integrity
  • High-Temperature Service: Stable performance in continuous exposure at 600–650°C

Buyer Advantage: Guarantees structural safety & compliance in long-term high-temperature service.

Value-Added Services by Navgraha Steels INC for Alloy Steel Plates

We deliver not just plates, but project-ready material solutions:

  • CNC cutting, beveling, drilling & fabrication support
  • Custom plate sizes & special thicknesses on request
  • Protective primer coating & anti-rust treatment
  • Export-ready seaworthy packaging & documentation
  • Dedicated mill test certificates (MTCs) with full traceability

Buyer Advantage: Saves time, labor & cost, ensuring EPC and refinery projects move without delays.

Why Choose Navgraha Steels INC as Your SA 387 Gr.91 Cl.2 Plate Supplier?

At Navgraha Steels INC, Mumbai, we know the risks buyers face: uncertified material, shipment delays, or wrong class supplied. For boilers, refineries, and power projects, such mistakes are unacceptable.

Buyers trust us because we deliver:

  • Global Export Experience – Supplying to GCC, Africa, Europe & Asia.
  • Full Certifications – IBR, PED, CE, EN 10204 3.1/3.2 MTCs.
  • On-Time Delivery – Mumbai stock + mill allocation ensures zero delay.
  • Transparent Pricing – Competitive CIF/FOB offers, no hidden costs.
  • Proven EPC Track Record – Approved supplier for shutdowns & high-pressure projects.

With Navgraha, you don’t just buy plates—you buy compliance + reliability + project security.

Popular Variants & Related Alloy Steel Plates We Also Supply

  • SA 387 Gr.91 Cl.1 Plates
  • SA 387 Gr.22 Cl.2 Plates
  • SA 387 Gr.11 Cl.2 Plates
  • ASTM A204 Boiler Quality Plates

Buyer Edge: One supplier for multiple chrome-moly grades = lower sourcing risk + faster procurement.

Export Packaging, Logistics & Safe Worldwide Delivery

We make sure every plate reaches you safe, compliant, and project-ready:

  1. Seaworthy Packing – waterproof sheets, strapped bundles, wooden crates.
  2. Shipping Options – containerized or break-bulk via JNPT/Nhava Sheva.
  3. Air Freight – for urgent shutdown-critical orders.
  4.  Protection – anti-rust oil, edge guards, and fumigation when needed.

Buyer Edge: Eliminates corrosion, damage, or customs rejection risks.

How to Select the Right SA 387 Gr.91 Cl.2 Plate Supplier

Before placing an order, ensure your supplier:

  1. Provides IBR, PED & EN 10204 certifications.
  2. Has ready stock in India for urgent requirements.
  3. Offers cut-to-size, CNC machining, and coating services.
  4. Handles export documentation & EPC approvals.
  5. Delivers with clear CIF/FOB pricing & on-time logistics.

At Navgraha Steels INC, we meet all 5 criteria—making us a strategic partner, not just a vendor.

FAQ’s

Cl.2 plates have higher mechanical strength and are tempered for longer service life.

Yes, we supply IBR-certified plates for Indian boiler and refinery projects.

Yes, with EN 10204 3.1/3.2, PED, CE certifications.

Prices vary by thickness, width, and origin—contact us for live quotes.

We supply from 6 mm to 150 mm thickness, widths up to 3000 mm

Yes, with controlled preheat and post-weld heat treatment (PWHT).

Request SA 387 Gr.91 Cl.2 Plate Price, Datasheet & MTC Today

Don’t compromise on compliance or delivery timelines.
 Call our Mumbai office today for live pricing.
 Request a datasheet & sample Mill Test Certificate (MTC).
 Get export-ready documentation & delivery support to any global port.

With Navgraha Steels INC, you secure certified plates, project-ready supply, and guaranteed delivery confidence.

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