Alloy Steel Sheet and Plates

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Yousef Steel stands out as a top manufacturer and supplier of high-performance Alloy Steel Sheets and Plates in Riyadh, Saudi Arabia. Renowned for its exceptional product quality and engineering know-how, Yousef Steel provides sheet and plate solutions that adhere to strict industry standards and are built to thrive in extreme conditions. These products find extensive use in sectors like oil & gas, petrochemicals, power generation, and construction. With cutting-edge processing capabilities and a strong focus on customer satisfaction, Yousef Steel guarantees a reliable supply, timely delivery, and tailored solutions for industrial clients throughout Saudi Arabia and the broader GCC region.

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A387 Low Alloy Steel Plate

ASME SA387 Alloy Steel Sheet

A387 Alloy Steel Plate

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What is Alloy Steel Sheet and Plates?

Alloy Steel Sheets and Plates from Yousef Steel are crafted with a blend of alloying elements, including chromium, molybdenum, nickel, vanadium, and carbon, which boost their hardness, tensile strength, corrosion resistance, and heat resistance. Typically, these plates showcase tensile strengths ranging from 600 to 1000 MPa and yield strengths between 350 and 700 MPa. They undergo heat treatment for enhanced toughness and durability, ensuring they perform well under high pressure and temperature. Their fine-grain structure and metallurgical stability make them perfect for structural, mechanical, and pressure vessel applications that demand both strength and reliability.

Carbon Steel Sheet and Plate

Alloy Steel Sheet and Plates Specifications

Specifications ASTM A387 / ASME SA387
Thickness 1mm-300mm
Width 1000mm, 1219mm, 1500mm, 1800mm, 2000mm, 2500mm, 3000mm, 3500mm, 4050mm etc
Length 2000mm, 2440mm, 3000mm, 5800mm, 6000mm, 12000mm, 15000mm etc
Surface 2B, 2D, BA, NO.1, NO.4, NO.8, 8K, mirror, checkered, embossed, hair line, sand blast, Brush, etching Manufacturer and Supplier
Finish Hot rolled plate (HR), Cold rolled sheet (CR)

Alloy Steel Sheet and Plates Chemical Composition

C Mn P S SI Cr Mo
Grade 5 0.15 max 0.3 – 0.6 0.035 0.03 0.5 max 4.00 – 6.00 0.45 – 0.65
Grade 9 0.15 max 0.30 – 0.6 0.03 0.03 1.0 max 8.0 – 10.0 0.9 – 1.1
Grade 11 0.05 – 0.17 0.4 – 0.65 0.035 0.035 0.5 – 0.80 1.0 – 1.5 0.45 – 0.65
Grade 12 0.05 – 0.17 0.4 – 0.65 0.035 0.035 0.15 – 0.4 0.8 – 1.15 0.45 – 0.6
Grade 22 0.05 – 0.15 0.3 – 0.6 0.035 0.035 0.5 max 2.0 – 2.5 0.9 – 1.1

Alloy Steel Sheet and Plates Mechanical Properties

Tensile Strength (ksi) Tensile Strength (MPa) Yield Strength (ksi) Yield Strength (MPa) Elongation in 2 inches (%)
A 387 Grade 5 Class 1 60-85 415-585 30 205 18
Class 2 75-100 515-690 45 310 18
A 387 Grade 9 Class 1 60-85 415-585 30 205 18
Class 2 75-100 515-690 45 310 18
A 387 Grade 11 Class 1 60-85 415-585 35 240 22
Class 2 70-90 485-620 45 310 22
A 387 Grade 12 Class 1 50-80 380-550 33 230 22
Class 2 65-85 450-585 40 275 22
A 387 Grade 22 Class 1 60-85 415-585 30 205 18
Class 2 75-100 515-690 45 310 18

If You Are Looking To Buy High Quality Pipes, Sheet, Fittings and Flanges

We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.

Top Manufacturer and Supplier of Alloy Steel Sheet and Plates in Riyadh, Saudi Arabia

Yousef Steel is a trusted manufacturer and supplier of high-quality Alloy Steel Sheet and Plates​ in Riyadh, Saudi Arabia. We specialize in premium steel products, including Alloy Steel, Carbon Steel, Mild Steel and Galvanized Steel, with a strong focus on Carbon Steel Sheet and Plates. Our extensive inventory also includes Pipes, Tubes, Flanges, Forged Fittings and Bars. Committed to fast delivery and exceptional customer service, we use only the finest raw materials to ensure superior strength, durability and performance for critical industrial applications. 

Alloy Steel 4340 Plate Size Chart

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

4130 Alloy Steel Sheet Weight chart

Thickness Plate Weight per Unit Area Density
3/16 inches 0.06000 lbs/in²42.184176 kg/m² 0.315 lbs/in³8.72 g/cm³
1/4 inches 0.08 lbs/in²56.245568 kg/m² 0.315 lbs/in³8.72 g/cm³
3/8 inches 0.121 lbs/in²85.0714216 kg/m² 0.315 lbs/in³8.72 g/cm³
1/2 inches 0.161 lbs/in²113.1942056 kg/m² 0.315 lbs/in³8.72 g/cm³
5/8 inches 0.196 lbs/in²137.8016416 kg/m² 0.315 lbs/in³8.72 g/cm³
3/4 inches 0.235 lbs/in²165.221356 kg/m² 0.315 lbs/in³8.72 g/cm³
7/8 inches 0.274 lbs/in²192.6410704 kg/m² 0.315 lbs/in³8.72 g/cm³
1 inches 0.313 lbs/in²220.0607848 kg/m² 0.315 lbs/in³8.72 g/cm³
1 1/4 inches 0.391 lbs/in²274.9002136 kg/m² 0.315 lbs/in³8.72 g/cm³
1 1/2 inches 0.47 lbs/in²330.442712 kg/m² 0.315 lbs/in³8.72 g/cm³
1 3/4 inches 0.549 lbs/in²385.9852104 kg/m² 0.315 lbs/in³8.72 g/cm³
2 inches 0.627 lbs/in²440.8246392 kg/m² 0.315 lbs/in³8.72 g/cm³
2 1/4 inches 0.705 lbs/in²495.664068 kg/m² 0.315 lbs/in³8.72 g/cm³
2 1/2 inches 0.784 lbs/in²551.2065664 kg/m² 0.315 lbs/in³8.72 g/cm³
2 3/4 inches 0.862 lbs/in²606.0459952 kg/m² 0.315 lbs/in³8.72 g/cm³
3 inches 0.941 lbs/in²661.5884936 kg/m² 0.315 lbs/in³8.72 g/cm³

Alloy Steel Boiler Quality Sheet Supplier in Jeddah, Chromium-Molybdenum Steel Plate Distributor in Saudi Arabia, Alloy Steel Pressure Vessel Plates Supplier in Riyadh, ASTM A387 Alloy Steel Sheet Supplier Exporter in Ras Al Khair, SA 387 GR.5 CL.2 Hot Rolled Plate Manufacturer in Jeddah, 10mm Low Alloy Heat Resistant Plate Dealer Price List in Al jubail, Alloy Steel Boiler Sheet Distributor in Jeddah, Alloy Steel Gr 9 Sheets and Plates Exporter in Saudi Arabia

Types of Alloy Steel Sheet and Plates

Alloy Steel Hot Rolled Plates
Chrome Moly SA 387 GR 11 CL. 2 Sheet
Alloy Steel Plate ASME SA 387 GR.9 Class 1
Alloy Steel Boiler Sheet
A387 Pressure Vessel Steel Plates
ASME SA 387 GR.5 CL.2 Alloy Steel Plate

ASTM A387 Sheet Supplier in Al jubail, Alloy Steel Boiler Sheet Exporter in Jeddah, 12mm Thick Steel Alloy Steel Plate Manufacturer in Ras Al Khair, Alloy Steel Gr 22 Sheets and Plates Stockist in Riyadh, Alloy Steel Plate Price List in Al jubail, ASME SA 387 Grade 11 CL. 2 Pressure Vessel Steel Plate Exporter in Saudi Arabia, 10mm Thick Alloy Steels Plate Distributor in Jeddah, ASME SA387 Alloy Steel Plate in Dammam

Uses of Alloy Steel Sheet and Plates

Alloy Steel Sheets and Plates are utilized in a variety of challenging industrial applications thanks to their remarkable strength, toughness, and resistance to wear and corrosion. In the oil & gas and petrochemical sectors, they are essential for constructing pressure vessels, heat exchangers, and storage tanks. In power plants, they play a crucial role in boiler construction and high-temperature piping systems. The construction industry relies on them for bridges, structural beams, and heavy-duty frameworks. Their high-performance characteristics make them a go-to choice for demanding applications.

Industry We Serve

Food Industry

Oil and Gas Industry

petrochemical industry