A4 rebar is one of the strongest types of reinforcement bars used in reinforced concrete structures. It is manufactured according to international and national standards and is widely used in heavy construction and infrastructure projects that require high structural strength.

A4 reinforcement bars feature a complex rib pattern that provides excellent bonding with concrete, making them ideal for structural elements subjected to high loads and stresses.

This type of rebar is typically produced in diameters ranging from 8 mm to 32 mm and is widely used in high‑rise buildings, bridges, industrial structures, foundations, and reinforced concrete frameworks.

In terms of mechanical properties, A4 rebar provides significantly higher strength compared to lower grades. Typical mechanical properties include:

• Yield Strength: approximately 500 MPa
• Ultimate Tensile Strength: approximately 650 MPa or higher
• Tensile to Yield Ratio: approximately 1.15 or higher

These characteristics make A4 steel rebar a preferred choice for engineers and contractors in projects where high load-bearing capacity, structural safety, and durability are essential.

In this section, you can explore different sizes of A4 reinforcement bars, review detailed specifications, and access export pricing based on metric ton supply.