ThePipingMart Blog Grades C40E Steel – Composition, Properties, and Uses

C40E Steel – Composition, Properties, and Uses

C40E Steel

When it comes to construction, there are a variety of materials out there that have unique properties, features, and advantages over others. One of the most popular materials used in construction work is C40E Steel. If you want to know more about what it is, its composition, physical and mechanical properties, uses, hardness, and heat treatment, then you’ve come to the right place! This blog post is informative about C40E Steel to help you understand how this material can be an excellent choice for your next construction project.

What is C40E Steel?

C40E Steel is a widely used carbon steel grade that belongs to the EN chemical composition standard. This steel grade is known for its toughness, weldability, and high tensile strength. C40E Steel is commonly used for locomotives, agricultural machinery, construction equipment, and hydraulic systems components.

C40E Steel Composition

Regarding its composition, C40E Steel contains 0.37 to 0.44 per cent carbon, 0.40 to 0.60 per cent manganese, and small amounts of sulfur and phosphorous. This combination of elements results in a high-quality steel grade with excellent mechanical properties.

C 0.37 – 0.44
Si max 0.40
Mn 0.50 – 0.80
Ni max 0.40
P max 0.030
S max 0.035
Cr max 0.40
Mo max 0.10

C40E Steel Physical Properties

Physically, C40E Steel is a bright steel that has a high lustre finish. Its density is 7.85 g/cm3, with a melting point of 1420-1460 C (2588-2663 F). The steel grade has excellent machinability, making it easy to machine.

C40E Steel Mechanical Properties

Regarding mechanical properties, C40E Steel has a tensile strength of 700-900 MPA (Mega Pascal), yield strength of 420-700 MPA, and an elongation of 9-16 per cent. These properties make C40E Steel ideal for applications requiring strong and durable materials.

Yield Strength Tensile Strength Elongation A5 min
MPa min ksi min MPa min MPa min ksi min Percentage
580 16

C40E Steel Equivalents

DIN 17200 Grade Ck40 EN 10083-2 Grade C40E ASTM A519 Grade 1040 ASME SA 519 Grade 1040

C40E Steel Uses

C40E Steel is used in different applications such as mining equipment and machinery, hydraulic pressing, and agricultural machinery. Its toughness and durability make it a reliable choice for high-stress applications.

C40E Steel Hardness

One of the most crucial factors that determine the suitability of C40E Steel for various applications is its hardness. The hardness of C40E Steel can be increased through processes like heat treatment. This steel grade has a typical Brinell hardness value range of 217-247 HB.

C40E Steel Heat treatment

Heat treatment is used to increase the hardness of C40E Steel. The heat treatment involves heating the steel to a specific temperature range and then cooling it at a specific rate. Heat treatment of C40E Steel can increase its hardness and durability, making it ideal for heavy-duty construction projects.


C40E Steel is a robust, reliable carbon steel grade with excellent mechanical properties. Its unique composition, physical and mechanical properties make it an ideal choice for various applications. Knowing the hardness of the material and how to increase it through heat treatment is also essential for optimizing C40E Steel’s use in construction. If you are looking for a reliable material that can withstand high-stress conditions for your next construction project, C40E Steel is undoubtedly worth considering.

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