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Product Overview

Introduction

1055 Engineering Steel C1055 EN1055 Medium Carbon Steel

Engineering Steel 1055 (EN 1055 / C1055 / SAE 1055) is a reliable medium-carbon steel grade valued for its high strength, solid wear resistance, and dependable toughness. It’s widely used in industries that require durable materials for both everyday and heavy-duty engineering applications. With a carbon content of 0.52–0.60%, this steel offers an excellent balance of hardness and flexibility, making it suitable for real-world components such as shafts, gears, crankshafts, pins, studs, and forged tools.

Moksh Tubes & Fittings LLP, we supply high-quality 1055 steel in multiple forms including round bars, flat bars, hex bars, square bars, plates, sheets, coils, strips, seamless pipes, welded tubes, and forged components. These products are available in annealed, normalized, hot-rolled, cold-drawn, and fully heat-treated conditions to meet diverse engineering needs.

Every material we supply is sourced from trusted mills and provided with EN 10204 3.1 / 3.2 certification, ensuring consistent quality, traceability, and reliable performance for industrial and mechanical applications.

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Engineering Steel 1055 Specifications

Category Details
Grade EN 1055 / C1055 / SAE 1055
Type Medium carbon steel
Typical Chemical Composition C 0.52–0.60%, Mn 0.60–0.90%, P ≤ 0.040%, S ≤ 0.050%
Conditions Annealed, Normalized, Hot Rolled, Cold Drawn
Heat Treatment Quenching & Tempering, Stress Relieving
Testing Tensile, Hardness, Chemical, UT (on request)
Certification EN 10204 3.1 / 3.2 (Mill Test Certificate available)

Chemical Composition of Engineering Steel 1055

Element Composition (%)
Carbon 0.52 – 0.60
Manganese 0.60 – 0.90
Phosphorus 0.040
Sulfur 0.050

1055 medium carbon steel (C1055) is preferred for its strong balance of hardness, machinability and cost-effectiveness.

Mechanical Properties of Engineering Steel 1055

Property Annealed Hot Finished Cold Drawn Hot Rolled Sheet
Tensile Strength (ksi / MPa) 75–95 ksi / 517–655 MPa 80–110 ksi / 552–758 MPa 90–120 ksi / 620–827 MPa 75–95 ksi / 517–655 MPa 70–90 ksi / 482–620 MPa
Yield Strength (0.2%) 40–55 ksi / 276–379 MPa 45–85 ksi / 310–586 MPa 55–85 ksi / 379–586 MPa 40–60 ksi / 276–414 MPa 35–50 ksi / 241–345 MPa
Elongation (%) 18–25 15–22 12–20 20–30 20–25
Brinell Hardness (3000 kg) 130–190 160–220 160–210 130–190 —
Rockwell Hardness (B / C) 75–85 B 85–95 B 85–95 B 75–85 B 75–85 B

After quenching & tempering, 1055 steel hardness can reach 45–55 HRC depending on cooling media.

Products in Engineering Steel 1055

Engineering Steel 1055 is typically available in

Engineering Steel 1055 products are produced to the following global standards:

Uses and Advantages

Higher hardness and tensile strength compared to lower carbon steels
Good wear resistance and toughness
Good machinability and weldability with proper heat treatment
Suitable for parts requiring strength and moderate ductility

Applications of Engineering Steel 1055

Engineering Steel 1055 is widely used in:

Chemical Processing
Oil & Gas
Marine
Pharmaceutical
Heat Exchangers
Power Plants

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FAQ's

What is EN 1055 steel and what are its main characteristics?

EN 1055, also known as C1055 or SAE 1055, is a medium carbon steel grade with higher carbon content compared to standard medium carbon steels. It offers superior hardness, strength, and wear resistance, making it ideal for applications that demand toughness and durability. With a good balance of mechanical properties, EN 1055 is widely used in structural and mechanical components requiring strength with moderate ductility.

What are the mechanical and physical properties of EN 1055 steel?

EN 1055 steel has a density of 7.85 g/cm³ and a melting point range of 1370–1400 °C. Its tensile strength varies between 517–827 MPa depending on the product condition, while yield strength ranges from 241–586 MPa. It also exhibits elongation values between 12–30%, Brinell hardness of 130–220, and Rockwell hardness between 75–95 B. These properties make EN 1055 suitable for heavy-duty engineering and industrial use.

What EN 1055 steel products does MOKSH TUBES & FITTINGS LLP supply?

MOKSH TUBES & FITTINGS LLP manufactures, supplies, and exports a complete range of EN 1055 steel products including seamless and welded pipes, tubes, sheets, plates, coils, strips, bars, pipe fittings, flanges, fasteners, and custom-fabricated components. All products are manufactured according to global quality standards and can be customized in terms of dimensions, specifications, and heat treatment to meet specific industry needs.

What are the main applications of EN 1055 steel?

EN 1055 steel is extensively used in the automotive and machinery industries for the production of shafts, gears, crankshafts, bolts, and studs that require high strength and wear resistance. In structural engineering, it is applied in heavy-duty parts exposed to mechanical stress. It is also widely utilized in manufacturing for tools, dies, and machine components where both strength and toughness are critical.

Why choose MOKSH TUBES & FITTINGS LLP for EN 1055 steel products?

MOKSH TUBES & FITTINGS LLP is a trusted manufacturer and global supplier of EN 1055 steel, offering premium quality materials sourced from reliable mills. The company provides custom sizes, heat treatment options, and technical support to meet project-specific requirements. With strong logistics for timely worldwide delivery and a commitment to quality and customer satisfaction, MOKSH TUBES & FITTINGS LLP ensures dependable steel solutions for diverse industries.

Contact Us

For inquiries or to request a quote for EN 1055 steel products, contact Moksh Tubes & Fittings LLP — your dependable partner for medium carbon steel solutions.

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