A round bar is a cylindrical metal rod with a uniform circular cross-section. Known for its high strength, smooth surface, and dimensional consistency, it is widely used across construction, automotive, engineering, and fabrication industries. At Kanodia Enterprises, we offer a comprehensive range of hot-rolled and cold-drawn round bars in multiple grades and sizes to suit varied industrial applications.
Types of Round Bars
We supply round bars in various material compositions and mechanical properties:
- Carbon Steel Round Bars: C45, EN8D, EN9
- Alloy Steel Round Bars: 4140, EN19 (42CrMo4), 20MnCr5
- High Tensile Round Bars: ST52-3, S355, S355J2, E350C
Material Grades & Properties
| Grade | Key Properties |
|---|---|
| C45 | Medium carbon steel with good strength and wear resistance |
| EN8D | Excellent machinability and weldability, used in high-stress parts |
| EN9 | High carbon steel for gears, crankshafts, and axles |
| 4140 | Chromium-molybdenum alloy steel with high tensile strength |
| EN19 (42CrMo4) | Fatigue resistant and impact tough alloy steel |
| 20MnCr5 | Case-hardening steel for gears and shafts |
| ST52-3 | Structural steel with high tensile and good weldability |
| S355 / S355J2 | Structural steel with enhanced impact properties |
| E350C | Indian standard high tensile steel with machinability |
Manufacturing Process
Hot Rolling: Billets are heated and passed through rollers to form round bars. This method is economical for bulk and structural use.
Cold Drawing: Hot rolled bars are drawn through dies at room temperature for precise dimensions and surface finish. Often used where accuracy is critical.
Standard Sizes
| Product | Diameter (mm) | Length (meters) |
|---|---|---|
| C45 round bar | 16–350 | 4000–6500 |
| EN8D round bar | 16–350 | 4000–6500 |
| EN9 round bar | 16–350 | 4000–6500 |
| 4140 round bar | 16–350 | 4000–6500 |
| EN19 round bar | 16–350 | 4000–6500 |
| 42CrMo4 round bar | 16–350 | 4000–6500 |
| 20MnCr5 round bar | 16–350 | 4000–6500 |
| ST52-3 round bar | 16–350 | 4000–6500 |
| S355 round bar | 16–350 | 4000–6500 |
| S355J2 round bar | 16–350 | 4000–6500 |
| E350C round bar | 16–350 | 4000–6500 |
Properties of Round Bars
- Machinability: Easy to machine and cut into custom shapes
- High Strength: Withstands heavy loads without deformation
- Corrosion Resistance: Suitable for harsh and corrosive environments
- Toughness: Absorbs impact and stress without cracking
- Hardness: Resists surface wear and indentation
- Weldability: Supports strong, defect-free joints
- Ductility: Flexible for bending, forming, and rolling
Applications of Round Bars
- Automotive: Crankshafts, camshafts, axles, suspension parts
- Construction: Structural reinforcements, columns, beams
- Engineering: Shafts, rollers, spindles, machine parts
- Oil & Gas: Drill tools, couplings, valves, components
- Manufacturing: Tools, gears, fasteners, mechanical parts
- Aerospace: Turbine components, landing gear, frames
- Marine: Propeller shafts, fittings, structural parts
- Agriculture: Tractor parts, blades, cultivator bars
- Furniture: Frames, supports, metal design elements
- Art & Architecture: Sculptures, railings, balusters
Quality Standards
Our round bars conform to global standards like ASTM, DIN, EN, and BS, ensuring consistent quality and performance. Each product undergoes thorough testing for tensile strength, chemical composition, and dimensional accuracy.