ASTM A36 C Channel Steel

Date:2025-10-24Tags:ASTM A36 , C Channel Steel

ASTM A36 C Channel Steel is a structural profile widely used in industrial and construction projects. Thanks to its excellent strength and versatility, it has become a popular choice among engineers and manufacturers. Moreover, its chemical composition ensures stable performance and long service life.

Standard Cornerstone: The Core Definition of ASTM A36/A36M

The identity of A36 steel is precisely defined by its implementation standard:

ASTM A36/A36M: This is the foundational US standard specifically for carbon structural steel, covering a variety of product forms, including plate, steel shapes (angles, channels, I-beams, H-beams), and bar (round, square, and flat). This standard clearly defines the chemical composition, mechanical properties, dimensional tolerances, process requirements, and quality assurance system for the steel. It is the most commonly used "entry-level" structural steel standard in the global engineering field, particularly in the North American market.

Grade Explanation:

"A": Represents ferrous material.

"36": Indicates a minimum yield strength of 36 kilopounds per square inch (ksi). Converted to metric units, this translates to ≥ 250 MPa (megapascals). This is its core mechanical property designation. Therefore, the essence of A36 is: a general-purpose carbon structural steel with a yield strength of at least 250 MPa (36 ksi) and conforming to ASTM A36/A36M standards. Its core value lies in its affordability, availability, and excellent overall processability.

Chemical Composition and Mechanical Properties

ASTM A36 belongs to the carbon steel category. It contains a balanced combination of carbon, manganese, phosphorus, and sulfur.
Here are its main properties:

Property	Approximate Value
Yield Strength	250 MPa
Tensile Strength	400–550 MPa
Minimum Elongation	20%
Density	7.85 g/cm³

Thanks to these characteristics, ASTM A36 C Channel Steel provides an excellent strength-to-weight ratio, ideal for lightweight metal structures.

Standard Dimensions of C Channel Steel

C channels are manufactured in a wide range of sizes.
Below are common dimensions:

Size (mm)	Thickness (mm)	Weight (kg/m)
100×50	5	8.4
150×75	6.5	14.2
200×80	7.5	18.4
250×90	9	25.3

Advantages of ASTM A36 C Channel Steel

Using ASTM A36 steel provides multiple benefits:
High structural strength: Handles heavy loads without deformation.
Excellent weldability: Its chemical balance ensures clean and strong joints.
Good corrosion performance: Can be galvanized for longer service life.
Versatility: Suitable for various industrial and construction applications.
Additionally, its competitive cost makes it an efficient choice for large-scale projects.