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ASTM A382 GR11 - Alloy Steel Plates & Sheets

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Alloy Steel ASTM A382 GR11 Plate & Sheets Manufacturer in India

ASTM A382 GR11 - Alloy Steel Plates & Sheets

Sachin Steel is a trusted manufacturer, supplier, and exporter of alloy steel A387 grade 11 plates and sheets, known for their excellent strength, durability, and heat resistance. These plates are produced using premium-quality raw materials sourced from reliable vendors, ensuring superior performance in high-pressure and high-temperature applications.

We provide a387 Gr 11 plates in multiple forms, such as coils, plain sheets, perforated sheets, and shim sheets. Available in different sizes, thicknesses, and specifications, these plates can also be customised to meet specific project requirements. With modern manufacturing facilities and the use of advanced machinery, we deliver products that match both national and international quality standards.

Our team of skilled engineers and quality professionals work with precision at every stage of production. Strict quality checks, including destructive and non-destructive tests, are performed to guarantee flawless products. To ensure timely availability, we maintain a well-organised stockyard and warehouses for bulk storage and quick dispatch.

Alloy steel astm a387 grade 11 plates and sheets are widely used across industries such as petrochemical, power generation, boilers, heat exchangers, and oil & gas refineries. Their ability to withstand elevated temperatures and corrosion makes them highly reliable for critical applications.

Our focus remains on delivering top-quality plates with secure packaging and timely shipment at competitive prices. With a commitment to excellence, Sachin Steel continues to be a preferred choice for Alloy Steel A387 Grade 11 Plates globally.

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What is Alloy Steel A387 Grade 11 Plates

Alloy steel a387 grade 11 plates are crafted using high-quality raw materials sourced from trusted suppliers to ensure strength, durability, and reliability. The production starts with melting and refining the alloy steel, followed by casting into slabs and precision rolling to achieve the desired thickness and dimensions. Skilled engineers supervise each stage, ensuring compliance with strict national and international standards.

Plates undergo heat treatment to enhance mechanical properties like hardness, toughness, and resistance to corrosion and high temperatures. Rigorous quality checks, including destructive and non-destructive testing, are conducted at multiple stages of manufacturing. The finished plates are then cut and prepared in various forms, including sheets, coils, and perforated plates. Finally, they are carefully packaged and stored in secure facilities, ready for timely delivery. This process ensures consistent high-quality A387 Grade 11 Plates for industrial applications worldwide.

Types of ASTM A382 GR11 Plate

Hexagonal Perforated Stainless Steel Sheet

Chrome Moly Alloy Steel Grade 11 Plate

Round Hole Perforated Stainless Steel Sheet

Hot Rolled Alloy Steel Grade 11 plate

Square Hole Perforated Stainless Steel Sheet

Cut to size Alloy Steel Gr. 11 Class 2 plate

Hot Rolled Sheets

Brush Alloy Steel Grade 11 Plate

SS Flat Plates

ASTM A387 Grade 11 Class 2 Plate

SS Shim Plates

Alloy Steel Grade 11 Alloy Cold Rolled Plate

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ASTM A387 Grade 11 Plate Specification

Item Alloy Steel and Pressure Vessel Steel Plates
Alloy Steel Gr.11 Plates Standard ASTM A387 / ASME SA387
ASTM A387 Gr.11 Plates Width 1500mm to 4050mm
ASTM A387 Gr.11 Plates Length 3000mm to 15000mm
ASTM A387 Gr.11 Plates Thickness 6MM to 300MM
ASTM A387 Gr.11 Plates Heat Treatment Rolled/Normalised/N+T/QT
ASTM A387 Gr.11 Plates Production Hot-Rolled (HR)
Payment Terms Paypal, Western Union, T/T (Telegraphic Transfer or Wire Transfer), L/C or Trade Assurance 30% deposit & balance before shipping
Free Sample Yes if we have in stock
Value Added Services Cutting, Beveling, Polishing, Threading, Destructive, Non Destructive, Ultrasonic Testing
ASTM A387 Gr.11 Plates Origin & Mills Japanese, Indian, USA, Korean, European, Russian, Ukraine (Strictly No China)
Inspection and Test Reports EN 10204 3.1, Mill Test Certificates, Chemical Reports, PMI Test Reports, Mechanical Reports, Third Party Inspection, NABL Approved Lab, Visual Inspection, Destructive Test and Non Destructive Test Reports
Marking
  • Specification
  • Grade
  • Nominal ASTM A387 Gr.11 Plates Sizes
  • ASTM A387 Gr.11 Plates Schedule or Thickness
  • Manufacturing Method (HR / CR)
  • Heat Number
  • Manufacturer’s Name or Custom Logo – on request
  • Marked A387 Gr.11 Plates Sample: SA387 Gr 11 Steel Plates
Outside Finish Finish as per customer Requirements

Mechanical Properties of A387 Gr 11 Plate

Grade Tensilee Strength (ksi) Tensilee Strength (MPa) Yield Strength (ksi) Yield Strength (MPa) Elongation in 50mm (%) Elongation in 50mm (%)
Class 1 Gr.11 60-85 415-585 35 240 19 22
Class 2 Gr.11 70-90 485-620 45 310 18 22

A387 ASTM Grade 11 Alloy Steel Sheet Gauge Chart

Gauge Number Inches MM
9 .1495 3.797
20 .0359 .911
22 .0299 .759
7 .1793 4.554
26 .0179 .454
12 .1046 2.656
24 .0239 .607
11 .1196 3.038
18 .0478 1.214
8 .1644 4.175
10 .1345 3.416
14 .0747 1.897
16 .0598 1.518
28 .0149 .378

ASTM A387 GR 11 Equivalent Material

BS EN ASTM/ASME DIN
621 B ––– A387-11-1 –––

Alloy Steel ASTM A387 GR 11 Chemical Composition

Grade Tensilee Strength (ksi) Tensilee Strength (MPa) Yield Strength (ksi) Yield Strength (MPa) Elongation in 50mm (%) Elongation in 50mm (%)
Class 1 Gr.11 60-85 415-585 35 240 19 22
Class 2 Gr.11 70-90 485-620 45 310 18 22

Tensile Requirements for ASTM A387 Grade 11 Alloy Steel Plates Class 1 Plates

Designation Requirement Grade 11
A387 Grade 11 Tensile strength, ksi [MPa] 75 to 100 [515 to 690]
  Yield strength, min, ksi [MPa]/(0.2% offset) 43 [310]
  Elongation in 8 in. [200mm], min % 18
  Elongation in 2 in. [50mm], min, % 22
  Reduction of area, min % –––

Grade 11 ASTM A387 Sheet Size Chart

Nominal Sizes
MM Inch
3.18 .125″
3.96 .156″
6.35 .250″
9.53 .375″
15.9 .600″
22.2 .875″
28.6 1.125″
38.1 1.500″
50.8 2″
44.5 1.750″
7.92 .312″
63.5 2.500″
4.75 .187″
31.8 1.250″
12.7 .500″
25.4 1″
19.1 .750″
3.40 .134″
76.2 3″

A387 Gr 11 Plate Weight Chart

Nominal Wall Thickness Density (lbs/in³ / g/cm³) Plate / Sheet Weight per Area Unit (lbs/in² / kg/m²)
3/16″ 0.315 / 8.72 0.06000 / 42.184176
3/8″ 0.121 / 85.0714216
5/8″ 0.196 / 137.8016416
7/8″ 0.274 / 192.6410704
1 1/4″ 0.391 / 274.9002136
1 3/4″ 0.549 / 385.9852104
2 1/4″ 0.705 / 495.664068
2 3/4″ 0.862 / 606.0459952
1/4″ 0.08 / 56.245568
2″ 0.627 / 440.8246392
1/2″ 0.161 / 113.1942056
3/4″ 0.235 / 165.221356
1 1/2″ 0.47 / 330.442712
1″ 0.313 / 220.0607848
2 1/2″ 0.784 / 551.2065664
3″ 0.941 / 661.5884936

ASTM A382 GR11 Plate Uses

  • Food and Beverage
  • Pharmaceuticals
  • Chemical Industry
  • Architecture and Construction
  • Marine
  • Water Treatment
  • Mining and Oil & Gas
Application Industries

FAQs About ASTM A382 GR11 Plate

A387 Grade 11 is a chromium-molybdenum alloy steel designed for high-temperature and pressure applications. It offers excellent strength, toughness, and resistance to corrosion, making it ideal for boilers, pressure vessels, and industrial piping.

ASTM A387 Grade 11 is equivalent to SA-387 Grade 11 in the ASME standards. It can also be compared with other international standards such as EN 10028-2 P11 or DIN 17175 11CrMo9-10, depending on the specific application.

The ASTM A387 specification defines requirements for alloy steel plates suitable for pressure vessels and boilers. It includes chemical composition, mechanical properties, heat treatment, and testing guidelines to ensure safety, durability, and compliance with national and international standards.

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