Thick 5/8" Carbon Steel Plate

CSN/Usiminas Quality and Traceability Certification. A 5/8" carbon steel plate ASTM A36 / Civil 300 (15.88 mm) is a hot-rolled thick plate Widely used in structural, industrial, and metal construction applications. Manufactured according to standards. ASTM A36 e NBR 6650This alloy offers an excellent combination of mechanical strength, ductility, and weldability—ideal for projects that demand performance, dimensional accuracy, and durability.

Technical characteristics of 5/8" A36 / Civil 300 Carbon Steel Plate

With a thickness of 15.88 mmThe sheet is produced by hot rolling, resulting in a homogeneous structure with high strength and easy shaping. The material ASTM A36 It is recognized worldwide for its balance between strength and flexibility, while the USI Civil 300 It is a national variation with equivalent mechanical properties and excellent performance in welding, cutting and bending.

Mechanical and chemical properties

• Standards: ASTM A36 / NBR 6650 / USI Civil 300
• Nominal thickness: 5/8" (15.88 mm)
• Yield point (Fy): 250 to 300 MPa
• Tensile strength (Fu): 400 – 550 MPa
• Minimum stretch: 20%
• Modulus of elasticity: 200 GPa
• Density: 7.85 g/cm³
• Typical chemical composition (%): C ≤ 0.26 | Mn 0.60–1.20 | Si ≤ 0.40 | P ≤ 0.04 | S ≤ 0.05

Advantages of A36 Plate / Civil 300

• High structural strength: Excellent performance in demanding industrial and construction environments.
• Excellent weldability and machinability: Compatible with all major processes (MIG, TIG, submerged arc, coated electrode).
• Excellent conformability: Ideal for cutting, bending and rolling, while maintaining mechanical integrity.
• Versatility: Suitable for metal structures, equipment bases, and heavy mechanical applications.
• Certified supply: Full traceability of origin guaranteed by the plants. CSN e Usiminas.

Applications of 5/8" A36 Carbon Steel Sheet / Civil 300

A 5/8” thick steel plate It is widely used in industrial and infrastructure sectors.

• Civil and metal construction
• Industrial structures and load supports
• Mining equipment and heavy boiler making
• Tanks, silos and pressure vessels
• Platforms, walkways and machine bases
• Sugar, alcohol, energy, and pulp and paper plants
• Petrochemical and offshore sector

Industrial processing and refinements

A I'm buying it provides A36 and Civil 300 thick plates With technical finishing and custom cutting, offering the following benefits:

• CNC cutting (plasma, oxyfuel and waterjet)
• Bending, rolling and technical chamfering
• Precision trimming and squaring
• Dimensional control and heavy machining

Quality control and certification

All ASTM A36 and USI Civil 300 plates They are produced and inspected according to standards. ASTM A6 e NBR 6650Each batch is accompanied by chemical and mechanical reports issued by the plants, ensuring full traceability and technical compliance for structural and industrial use.

International standards and equivalencies

• Brazil: NBR 6650 / NBR 11888 / NBR 5915 / USI Civil 300
• United States: ASTM A36
• Europe: EN 10025 S275JR
• Germany: DIN 17100 St 37-2
• Japan: JIS SS400

Why choose Compraço?

• National expert in thick structural plates and hot-rolled;
• Direct partnership with the main Brazilian sugar mills;
• Technical supply with full certification and traceability;
• Precision industrial cutting and processing services;
• Services focused on civil, mechanical, and heavy infrastructure projects.

Carbon Steel Plate 5/8" ASTM A36 / Civil 300 (15.88 mm) — Ideal for structural, industrial, and engineering applications that demand strength, reliability, and certified quality. A I'm buying it We supply steel with proven performance to all sectors of the national industry.