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Product Overview
Introduction
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.
Technical Composition of Engineering Steel 1055
Physical Properties of Engineering Steel 1055
| Property | Imperial | Metric |
|---|---|---|
| Density | 0.284 lb/in³ | 7.85 g/cm³ |
| Melting Point | 2500 – 2550 °F | 1370 – 1400 °C |
| Modulus of Elasticity (Tension) | 29,000 ksi | 200 GPa |
| Modulus of Elasticity (Torsion) | 11,600 ksi | 80 GPa |
| Poisson's Ratio | 0.29 | - |
| Thermal Conductivity | 44 W/m·K | 44 W/m·K |
| Specific Heat Capacity | 460 J/kg·K | 460 J/kg·K |
Heat Treatment of 1055 Steel
| Heat Treatment Process | Temperature Range | Cooling / Procedure |
|---|---|---|
| Annealing | 790–870°C | Cool slowly in furnace |
| Normalizing | 830–860°C | Air cool |
| Hardening | 800–820°C | Quench in water or oil |
| Tempering | 150–650°C | Reheat depending on required hardness |
| Stress Relieving | 540–650°C | Hold for 1–2 hours |
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.
International Standards & Equivalent Grades
| Standard | Equivalent Grade |
|---|---|
| EN | EN 1055 |
| AISI / SAE | 1055 |
| DIN | CK55 |
| JIS | S55C |
| GB | 55 |
Products in Engineering Steel 1055
Engineering Steel 1055 is typically available in
✔
Seamless Pipes
✔
Welded Pipes (ERW & EFW)
✔
Tubes (Capillary, U-Bend)
✔
Sheets & Plates
✔
Coils & Strips
✔
Round Bars, Flat Bars, Hex Bars, Square Bars
✔
Pipe Fittings (Elbows, Tees, Reducers, Caps, Stub Ends)
✔
Flanges (Weld Neck, Slip-On, Blind, Socket Weld, Threaded)
✔
Fasteners (Bolts, Nuts, Screws, Washers, Studs)
✔
Custom Fabricated Components
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:
Automotive and Machinery
Shafts, gears, crankshafts, bolts, and studs requiring higher strength and wear resistance.
Structural Components
Heavy-duty structural parts and machinery components subject to mechanical stress.
Manufacturing
Tools, dies, and machine parts that require a balance of strength and toughness.
Export Destinations
We export Engineering Steel 1055 to:
UAE, Saudi Arabia, Qatar, Oman, Kuwait, Bahrain, Turkey, Europe, USA, Canada, Singapore, Malaysia, Indonesia, South Africa, Nigeria.
WHY CHOOSE US?
1055 Steel Price per kg in India
Price varies based on size, OD, thickness, and heat-treatment condition.
Typical Range: ₹110 – ₹180 per kg (Indicative only)
Contact us for exact quotation based on size and quantity.
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.
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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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