C45E Carbon Steel: Properties, Applications, and Suppliers in India

When it comes to high-strength carbon steels used in the manufacturing and engineering industries, C45E carbon steel stands out as a popular choice. Known for its excellent mechanical properties, machinability, and moderate tensile strength, C45E is often used in applications requiring toughness and wear resistance. In this blog post, we’ll explore everything you need to know about C45E carbon steel, including its composition, mechanical properties, applications, equivalent grades, and reliable suppliers in India.

What is C45E Carbon Steel?

C45E is a medium carbon steel grade according to EN 10083-2 standard. The “E” at the end signifies that it has a defined maximum level of sulfur and phosphorus content, which makes it suitable for engineering components that require good machinability and structural integrity.

It is widely used in the production of components like gears, shafts, axles, bolts, studs, and machine parts. This steel offers a balance between strength and ductility, making it highly suitable for heat treatment processes such as quenching and tempering.

C45E Carbon Steel Chemical Composition

Note: The exact composition can vary depending on the manufacturing process and standards.

Mechanical Properties of C45E Steel

These values may vary depending on heat treatment and product form (bar, sheet, plate, etc.)

Key Features of C45E Carbon Steel

• Good machinability

• Medium tensile strength

• Excellent wear resistance

• Easily heat treatable (quenching and tempering)

• Well-suited for forging and machining

• Moderate weldability with appropriate precautions

Applications of C45E Carbon Steel

Thanks to its balance of toughness and strength, C45E carbon steel is widely used in:

• Automotive parts (shafts, gears, crankshafts)

• Engineering components (bolts, connecting rods, couplings)

• Tool manufacturing

• Forgings and bright bars

• Agricultural machinery

• Mechanical engineering structures

C45E vs. C45 – What’s the Difference?

Both C45E and C45 are carbon steels under the EN 10083 standard. The primary difference lies in the controlled sulfur and phosphorus content in C45E, which provides better machining characteristics. While both grades offer similar mechanical performance, C45E is often preferred in precision engineering applications.

Equivalent Grades of C45E Steel

Heat Treatment for C45E Carbon Steel

• Annealing: Improves machinability and relieves internal stress.

• Hardening: Typically oil-quenched at ~820°C to achieve high hardness.

• Tempering: Followed after quenching to improve toughness and reduce brittleness.

• Normalizing: Performed at 840–880°C to refine the grain structure.

Machinability and Welding

• Machinability: Good in the normalized condition, better with sulfur-controlled C45E grade.

• Weldability: Fair, but preheating and post-weld heat treatment are recommended to avoid cracking.

Forms Available

You can purchase C45E carbon steel in various forms:

• Hot Rolled Plates

• Cold Drawn Bars

• Forged Bars

• Bright Bars

• Rolled Rounds

• Hex Bars

• Flat Bars

C45E Carbon Steel Price in India

The price of C45E steel depends on several factors, including thickness, dimensions, heat treatment, and quantity ordered. As of [current market], the indicative price range is:

• ₹70 – ₹110/kg for bright bars or rolled bars

• ₹65 – ₹90/kg for hot rolled plates and sheets

Note: Prices may vary depending on market trends and supplier location.

Top C45E Carbon Steel Suppliers in India

When sourcing C45E steel, it’s important to partner with trusted and certified suppliers. Some reliable sources include:

• Steel Authority of India (SAIL)

• Jindal Steel

• Bharat Steels

• Virwadia Steels

• Masteel India

• Triton Alloys Inc.

• Maharashtra Steel

Always check for certifications like ISO 9001, mill test reports, and in-house quality checks.

Why Choose C45E Carbon Steel?

C45E strikes the ideal balance between affordability, strength, and workability, making it a preferred grade for engineering and automotive industries. It is especially favored where high fatigue strength and wear resistance are critical, such as crankshafts or heavy-duty gears.

Conclusion

If you are looking for a reliable medium carbon steel with good machinability and strength, C45E carbon steel is an excellent choice. Whether you are a manufacturer of automotive parts, heavy machinery, or forged tools, this grade offers consistent quality and dependable performance. Ensure to work with reputed suppliers and request material test certificates for assurance.

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