Struggling to find a reliable SA387 Grade 11 plate supplier? You’re not alone. With so many factories claiming to offer the best quality and fastest delivery, making the right choice can feel overwhelming. Choosing the right manufacturer means peace of mind—consistent quality, competitive prices, and on-time shipments for your projects. Ready to discover the top-rated factories that industry insiders trust? Keep reading to see our comparison of the leading SA387 Plate Grade 11 suppliers!

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SA387 Grade 11 Steel Plate Supplier – Universal Steel America

Product Details:
SA387 Grade 11 steel plate (ASTM A387-11) is a high-performance alloy steel plate engineered for pressure-containing equipment used in storing, transporting, and treating process media at heightened temperatures. Supplied by Universal Steel America, it is part of their ASME Pressure Vessel Plates (PVQ) offerings.

Technical Parameters:
– Complies with ASTM A387 Grade 11 / ASME SA387-11 specifications
– Alloy steel suitable for high-temperature service
– Used in fabrication of pressure vessels and related equipment

Application Scenarios:
– Pressure vessels operating at elevated temperatures
– Equipment for storage and transport of hazardous gases and valuable crude oil
– Treatment systems for sewage and drinking water involving pressurized or hot

Pros:
– High performance in elevated temperature environments
– Good resistance to thermal degradation and leakage
– Suitable for handling hazardous, corrosive, or high-value process media

Cons:
– May not be suitable for ambient/low-temperature applications
– Specialized material with likely higher cost and fabrication requirements

SA-387 Steel Plates Grade 11 & 22 – American Alloy Steel

Product Details:
The company supplies SA387/ASTM A387 alloy steel plates, designed for elevated temperature and pressure service, and available in various grades including 5, 9, 11, 12, 22, and 91.

Technical Parameters:
– Available grades: SA387/ASTM A387 Gr.5, Gr.9, Gr.11, Gr.12, Gr.22, Gr.91
– Thickness range: 6mm – 150mm (may vary by grade)
– Alloy steel composition with chromium and molybdenum for improved heat and
– Meets ASME SA387 and ASTM A387 standards

Application Scenarios:
– Use in pressure vessels and boilers
– Applications involving elevated temperatures and pressures
– Petrochemical, oil, and gas industries

Pros:
– Excellent resistance to high temperature and pressure
– Good corrosion and oxidation resistance due to alloying elements
– Compliant with international standards (ASME/ASTM)

Cons:
– May require specialized welding and fabrication techniques
– Higher cost compared to standard carbon steel plates

SA387 Steel Plate – Wingate Alloys Inc

Product Details:
SA387/ASTM A387 Chromium-Molybdenum Alloy Steel Plates in Grades 5, 9, 11, 12, 22, and 91, Class 1 and 2, designed for use in weldable pressure vessels and industrial boilers, suitable for elevated temperature and corrosion-resistant applications. Available in stock for immediate shipment. Round bar stock also offered in ASTM A182 Grades F5, F11, F22, F91, and P11, P22.

Technical Parameters:
– Grade-dependent chemical compositions: Carbon (0.04-0.17%), Manganese (0.25-0
– Tensile strength (ksi): Class 1: 60-85, Class 2: 75-100; Yield strength (ksi):
– Elongation: 18-22% in 50mm, reduction of area 45%
– Complies with ASTM A387/SA387 specifications for pressure vessel plates, alloy

Application Scenarios:
– Boilers and pressure vessels operating at elevated temperatures
– Oil, gas, and petrochemical industry applications, especially where liquids and
– Sour gas and sour service environments requiring excellent corrosion and
– Industrial fabrication where weldable, high-strength alloy steel plates are

Pros:
– Excellent corrosion and oxidation resistance due to chromium and molybdenum
– High temperature tensile strength, suitable for elevated temperature service
– Good weldability, making materials suitable for industrial fabrication
– Immediate availability for shipment

Cons:
– No explicit disadvantages or cons provided in the content
– Limited to use in specific elevated temperature and pressure vessel

ASTM A387 GRADE 11 Class 2 | SA 387 GR 11 Cl 2 – Amardeep

Product Details:
ASTM A387 Grade 11 Class 2 Alloy Steel Plates manufactured and supplied by Amardeep Steel, suitable for high-temperature and pressure vessel applications. Available in multiple forms such as plates, coils, foils, perforated sheets, chequered plates, strips, and more, with chemical composition including carbon, silicon, phosphorous, chromium, sulfur, molybdenum, and manganese. Widely exported and supplied globally.

Technical Parameters:
– Standard: ASTM A387 / ASME SA387
– Grade: ASTM A387 Gr 11 CL.2
– Width: 1000mm – 4500mm, Thickness: 5mm – 150mm, Length: 3000mm – 18000mm
– Mechanical Properties: Tensile Strength 515-690 MPa, Yield Strength 310 MPa
– Chemical Composition: C 0.05-0.17, Mn 0.40-0.65, P 0.035 max, S 0.035 max, Si 0
– Impact Tested at -52°C
– Process: Hot-Rolled (HR)

Application Scenarios:
– Oil & Gas Industry
– Petrochemical Industry
– Boilers & Heat Exchangers
– Nuclear & Aerospace Plants
– Shipping, Automobile Ancillaries, Steel Plants

Pros:
– High temperature and pressure resistance
– Excellent corrosion and oxidation resistance, especially suitable for sour gas
– Good mechanical strength (high tensile and yield strength), elongation, and
– Strong weldability and dimensional accuracy; available in multiple forms
– Tested thoroughly (radiography, mechanical, chemical, hydrostatic, impact, etc

Cons:
– No explicit disadvantages are mentioned in the provided content; potential

ASME SA 387 Grade 11 Class 2 Plates – ASC LLP

Product Details:
ASME SA 387 Grade 11 Class 2 Alloy Steel Plates designed for use in welded boilers and pressure vessels operating in high-temperature and high-pressure environments, particularly within the oil, gas, energy, petrochemical, and power generation industries. Supplied by ASC LLP, these plates comply with ASME standards and are available in various thicknesses, widths, and lengths.

Technical Parameters:
– Thickness: 6 – 150 mm; Width: 1500 – 2500 mm; Length: 6000 – 12000 mm
– Tensile Strength: 515 – 690 MPa; Yield Strength: 310 MPa (min); Elongation: 18%
– Chemical Composition: Carbon 0.05–0.17%, Manganese 0.40–0.65%, Phosphorus max 0
– Physical Properties: Density 7.85 g/cm³, Melting Point 1425–1510°C, Thermal

Application Scenarios:
– Pressure vessels and reactors in petrochemical plants
– Boilers and heat exchangers in oil and gas industry
– Steam boilers and turbine parts in power generation sector
– Heavy-duty equipment components and structural elements in energy and

Pros:
– Excellent high-temperature and high-pressure resistance due to chromium-molybden
– High strength, durability, toughness, and corrosion resistance
– Cost-effective with long service life and compliance to ASME standards
– Versatile for varied industrial applications and available in a wide

Cons:
– Primarily suitable only for high-temperature and pressure applications; not
– May require additional surface treatment or coatings for specialized use

ASME SA 387 Grade 11 Plates | Sai Steel

Product Details:
Sai Steel & Engineering manufactures, supplies, stocks, and exports qualitative ASME SA 387 Grade 11 Class 2 (GR.11 CL.2) alloy steel plates. These plates are available in a broad range of sizes, finishes, and custom specifications, adhering to international quality standards for use in high-temperature and corrosive environments.

Technical Parameters:
– Grade: ASME SA 387 Grade 11 CL.2 Alloy Steel Plates
– Width: 1000mm-4500mm; Thickness: 5mm-150mm; Length: 3000mm -18000mm
– Impact tested at -52°C; Process: Hot-Rolled (HR)
– Chemical composition (approx.): C: 0.05-0.17, Mn: 0.40-0.65, P: 0.035 max, S: 0
– Mechanical properties for Class 2: Tensile strength 515-690 MPa, Yield strength

Application Scenarios:
– Weldable pressure vessels and industrial boilers
– Sour service and high-temperature environments in industries such as
– Gas applications

Pros:
– High strength and efficiency at elevated temperatures
– Excellent corrosion resistance
– Durable with longer lifespan and flawless finish
– Good weldability and performance in critical applications

Cons:
– Requires rigorous and multiple quality tests prior to supply
– Intended specifically for high-temperature and industrial applications, may not

SA387 / A387 Grade 11 Class 2 – Brown McFarlane

Product Details:
SA387 / A387 Grade 11 Class 2 is a type of chromium-molybdenum alloy steel plate designed for high-temperature and high-pressure applications.

Technical Parameters:
– Chromium-molybdenum alloy composition
– High tensile strength
– Excellent weldability
– Suitable for pressure vessels

Application Scenarios:
– Pressure vessels in the oil and gas industry
– High-temperature applications in power plants
– Chemical processing equipment
– Boiler and heat exchanger manufacturing

Pros:
– High resistance to corrosion and oxidation
– Good mechanical properties at elevated temperatures
– Versatile for various industrial applications
– Meets ASME and ASTM standards

Cons:
– May require preheating before welding
– Higher cost compared to standard carbon steel
– Limited availability in some regions
– Requires careful handling to avoid damage

SA 387 GR 11 CLASS 2 Plates Stockist – textronsteelalloys.com

Product Details:
SA 387 GR 11 CLASS 2 Plates are high-strength steel plates designed for use in pressure vessels and industrial applications requiring high-temperature resistance.

Technical Parameters:
– High strength and toughness
– Suitable for high-temperature applications
– Complies with ASTM standards

Application Scenarios:
– Pressure vessels in the oil and gas industry
– Chemical processing plants
– Power generation facilities

Pros:
– Excellent resistance to heat and pressure
– Durable and reliable for industrial applications
– Wide range of sizes and thicknesses available

Cons:
– May require special handling due to weight
– Higher cost compared to standard steel plates

SA 387 Grade 11 Steel Plate – delawarevalleysteel.com

Product Details:
SA 387 Grade 11 is a pressure vessel grade steel popular for use in high-temperature assignments based on its high tolerance to high temperatures.

Technical Parameters:
– Excellent corrosion and oxidation resistance
– Great tensile strength
– Dimensional accuracy
– Weldability

Application Scenarios:
– Pressure Vessels
– Piping
– Heat Exchangers
– High temperature ducting

Pros:
– High tolerance to high temperatures
– Efficient in chemical, oil, and gas industries
– Excellent surface finishes

ASME SA387 Grade 11 Class 2 Steel Plate Specification – Octal

Product Details:
ASME SA387 Grade 11 Class 2 is a chromium-molybdenum alloy steel plate designed for elevated temperature applications, particularly in pressure vessels and heat exchangers. It features a nominal chromium content of 1.00% to 1.50% and molybdenum content of 0.45% to 0.65%. Class 2 indicates enhanced properties due to additional heat treatment.

Technical Parameters:
– Yield Strength: Minimum of 205 MPa (30,000 psi)
– Tensile Strength: Minimum of 415 MPa (60,000 psi)
– Thickness: 5 to 150 mm
– Width: 0.6m to 3m

Application Scenarios:
– Pressure vessels in the oil and gas industry
– Boilers
– Heat exchangers
– Pipelines operating at elevated temperatures

Pros:
– Good strength and resistance to oxidation at high temperatures
– Excellent corrosion and oxidation resistance due to higher chromium content
– Enhanced performance under higher stress and temperature conditions due to
– Versatile applications across various industries

Comparison Table

Company	Product Details	Pros	Cons	Website
SA387 Grade 11 Steel Plate Supplier – Universal Steel America	SA387 Grade 11 steel plate (ASTM A387-11) is a high-performance alloy steel	High performance in elevated temperature environments Good resistance to	May not be suitable for ambient/low-temperature applications Specialized	www.universalsteelamerica.com
SA-387 Steel Plates Grade 11 & 22 – American Alloy Steel	The company supplies SA387/ASTM A387 alloy steel plates, designed for elevated	Excellent resistance to high temperature and pressure Good corrosion and	May require specialized welding and fabrication techniques Higher cost compared	www.aasteel.com
SA387 Steel Plate – Wingate Alloys Inc	SA387/ASTM A387 Chromium-Molybdenum Alloy Steel Plates in Grades 5, 9, 11, 12,	Excellent corrosion and oxidation resistance due to chromium and molybdenum	No explicit disadvantages or cons provided in the content Limited to use in	wingatealloys.com
ASTM A387 GRADE 11 Class 2	SA 387 GR 11 Cl 2 – Amardeep	ASTM A387 Grade 11 Class 2 Alloy Steel Plates manufactured and supplied by	High temperature and pressure resistance Excellent corrosion and oxidation	No explicit disadvantages are mentioned in the provided content; potential
ASME SA 387 Grade 11 Class 2 Plates – ASC LLP	ASME SA 387 Grade 11 Class 2 Alloy Steel Plates designed for use in welded	Excellent high-temperature and high-pressure resistance due to chromium-molybden	Primarily suitable only for high-temperature and pressure applications; not	steelpipesuppliers.com
ASME SA 387 Grade 11 Plates	Sai Steel	Sai Steel & Engineering manufactures, supplies, stocks, and exports qualitative	High strength and efficiency at elevated temperatures Excellent corrosion	Requires rigorous and multiple quality tests prior to supply Intended
SA387 / A387 Grade 11 Class 2 – Brown McFarlane	SA387 / A387 Grade 11 Class 2 is a type of chromium-molybdenum alloy steel	High resistance to corrosion and oxidation Good mechanical properties at	May require preheating before welding Higher cost compared to standard carbon	www.brownmac.com
SA 387 GR 11 CLASS 2 Plates Stockist – textronsteelalloys.com	SA 387 GR 11 CLASS 2 Plates are high-strength steel plates designed for use in	Excellent resistance to heat and pressure Durable and reliable for industrial	May require special handling due to weight Higher cost compared to standard	www.textronsteelalloys.com
SA 387 Grade 11 Steel Plate – delawarevalleysteel.com	SA 387 Grade 11 is a pressure vessel grade steel popular for use in	High tolerance to high temperatures Efficient in chemical, oil, and gas		www.delawarevalleysteel.com
ASME SA387 Grade 11 Class 2 Steel Plate Specification – Octal	ASME SA387 Grade 11 Class 2 is a chromium-molybdenum alloy steel plate designed	Good strength and resistance to oxidation at high temperatures Excellent		www.octalmetals.com

Frequently Asked Questions (FAQs)

What should I consider when selecting a SA387 Plate Grade 11 supplier?

Prioritize suppliers with a proven track record, relevant certifications (such as ISO or ASME), quality assurance procedures, and clear communication. Check if they offer custom sizes and quick delivery options that suit your project timeline.

How can I verify the quality of SA387 Grade 11 plates?

Ask suppliers for mill test certificates, quality control documents, and compliance with international standards. You can also request third-party inspection reports and customer references to confirm product reliability.

Is it important for the supplier to have experience exporting SA387 plates?

Yes! Suppliers with export experience are familiar with shipping regulations, packaging, and documentation—ensuring smooth delivery and fewer delays, especially if you’re sourcing internationally.

Why should I request product samples or small trial orders?

Samples or trial orders allow you to evaluate plate quality, surface finish, and conformity to your specifications before committing to a larger purchase, reducing the risk of costly mistakes.

How do I compare prices between SA387 Plate Grade 11 manufacturers?

Obtain detailed quotes from multiple suppliers, making sure each includes product specifications, delivery timeframes, and payment terms. Don’t just focus on price—also weigh quality, service, and reliability for the best overall value.