When it comes to carbon steel plates used in structural applications, ASTM A283 stands out as one of the most trusted specifications in the industry. At Emirerri Steel, we take pride in delivering high-quality steel solutions that meet global standards and cater to the diverse requirements of our clients. One such widely used material in our product lineup is ASTM A283, particularly ASTM A 283 Gr C.
This blog explores the ASTM A283 specification, its chemical and mechanical properties, typical applications, and why it's a preferred choice in structural engineering.
What is ASTM A283?
ASTM A283 is a standard specification developed by ASTM International for low and intermediate tensile strength carbon steel plates. These plates are primarily used in structural applications such as bridges, buildings, and general construction where weight savings and weldability are crucial.
Material A283 is known for its excellent formability and moderate strength, making it suitable for fabrication and welding processes.
The specification covers four grades: Grade A, B, C, and D, with ASTM A 283 Gr C being the most commonly used due to its balance of strength, ductility, and weldability.
ASTM A283 Specification Highlights
The ASTM A283 specification outlines the following key requirements:
Type: Carbon steel plate
Grades: A, B, C, D
Product Form: Rolled carbon steel plates
Application: Structural use in riveted, bolted, or welded construction
Among the available grades, ASTM A 283 C is widely selected for structural projects due to its higher yield strength and moderate tensile strength, suitable for a wide range of construction requirements.
Chemical Composition of ASTM A283 C
The chemical composition of ASTM A283 C is carefully controlled to ensure optimal performance. The typical composition is:
ElementContent (%)Carbon (C)≤ 0.24Manganese (Mn)0.90 – 1.20Phosphorus (P)≤ 0.035Sulfur (S)≤ 0.040
This balanced chemical composition allows for easy forming and welding, while also providing enough strength for various structural applications.
Mechanical Properties of ASTM A 283 Gr C
The mechanical properties of ASTM A283 C make it suitable for many structural applications. These include:
Tensile Strength: 380 – 515 MPa
Yield Strength: ≥ 205 MPa
Elongation: 20% min in 200 mm / 22% min in 50 mm
The good elongation values make ASTM A 283 Gr C plates less prone to cracking during forming or welding operations, a significant advantage in construction projects.
Advantages of Using ASTM A283 C
Choosing ASTM A283 C steel plates offers several benefits:
Excellent Formability: Easy to bend and shape
Good Weldability: Compatible with all standard welding techniques
Cost-Effective: Provides structural integrity at a lower cost
Reliable Performance: Consistent mechanical properties and dimensional stability
Corrosion Resistance: Suitable for both indoor and mild outdoor environments
Applications of ASTM A283 Grade C
ASTM A 283 Gr C is commonly used in applications where moderate strength and excellent fabrication qualities are needed. Typical applications include:
Construction of buildings and bridges
Structural frameworks and supports
Oil and gas storage tanks
Industrial boilers and pressure vessels
General fabrication and manufacturing industries
At Emirerri Steel, we provide custom cutting, processing, and surface finishing to meet your exact project specifications for any ASTM A283 application.
ASTM A283 vs. Other Carbon Steel Grades
When compared to other structural grades such as ASTM A36 or ASTM A516, ASTM A283 C provides a more cost-efficient alternative for moderate-strength applications. While A36 is known for its higher yield strength, ASTM A283 Gr C offers better formability and is often chosen for light to medium structural work.
For pressure vessel applications requiring higher strength and temperature resistance, ASTM A516 is preferred, but for general structural needs, ASTM A283 hits the sweet spot in terms of price and performance.
Why Choose Emirerri Steel for ASTM A283?
At Emirerri Steel, we supply a full range of ASTM A 283 Gr C plates and sheets in multiple thicknesses and sizes. Our inventory includes:
Thickness: 5 mm to 100 mm
Width: Up to 3000 mm
Length: Customizable up to 12 meters
Surface Finish: Mill finish, hot rolled, or custom-treated
We ensure each plate meets the highest quality standards with proper testing and certifications. Our team also assists with on-time delivery and technical support to meet your project needs.
Conclusion
ASTM A283, particularly ASTM A283 C, is an essential material in structural engineering due to its moderate strength, excellent formability, and versatility. Whether you're building infrastructure, manufacturing equipment, or constructing industrial storage units, material A283 provides a dependable and economical choice.
For top-quality ASTM A 283 Gr C plates with customized solutions, trust Emirerri Steel — your reliable partner in the steel industry. Contact us today to learn more about our range of ASTM A283 products and how we can help you meet your project requirements.
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