Home > Round Bars > Carbon Steel Round Bars
Inox Steel India is a trusted manufacturer, supplier, and exporter of Carbon Steel Round Bars in grades C20, C45, EN8, and EN9, supplied in accordance with ASTM A29, EN 10083, and BS 970 standards.
Our carbon steel round bars are widely used across general engineering, machining, automotive, forging, fabrication, and structural industries, serving customers in India and international markets including GCC, Middle East, Africa, Europe, and the Americas.
With consistent stock of black (hot rolled) and bright (cold drawn) round bars, Inox Steel India supports both OEM production lines and project-based bulk requirements, offering material with full traceability and certification.
Carbon steel round bars are solid cylindrical steel products known for their strength, machinability, weldability, and cost-effectiveness. They are widely preferred for mechanical and structural components where high load-bearing capacity and ease of fabrication are essential.
At Inox Steel India, carbon steel round bars are manufactured using controlled rolling and drawing processes to achieve uniform mechanical properties and dimensional accuracy.
This process ensures carbon steel round bars suitable for machining, forging, welding, and high-strength applications.
These advantages make carbon steel round bars a preferred choice for industrial components, automotive parts, and structural uses.
Inox Steel India supplies carbon steel round bars in the following grades:
Applicable Standards: ASTM A29 / EN 10083 / BS 970
| Parameter | C20 | C45 | EN8 | EN9 |
|---|---|---|---|---|
| Product Form | Solid Round Bar | Solid Round Bar | Solid Round Bar | Solid Round Bar |
| Material Category | Carbon Steel | Medium Carbon Steel | Medium Carbon Steel | High Carbon Steel |
| Standard | ASTM A29 / EN 10083 | ASTM A29 / EN 10083 | BS 970 / EN 10083 | BS 970 / EN 10083 |
| Equivalent Grades | AISI 1020 | AISI 1045 | AISI 1040 | AISI 1050 |
| Manufacturing Process | Hot Rolled / Cold Drawn | Hot Rolled / Cold Drawn | Hot Rolled / Bright Drawn | Hot Rolled / Bright Drawn |
| Diameter Range (mm) | 6 – 500 mm | 6 – 500 mm | 6 – 450 mm | 6 – 400 mm |
| Standard Sizes (mm) | 6, 8, 10, 12, 16, 20, 22, 25, 32, 40, 50, 65, 80, 100 | Same as C20 | Same as C20 | Same as C20 |
| Length | Random / Fixed / Cut-to-Length | Random / Fixed / Cut-to-Length | Random / Fixed / Cut-to-Length | Random / Fixed / Cut-to-Length |
| Surface Finish | Black / Bright | Black / Bright | Black / Bright | Black / Bright |
| Density (g/cm³) | 7.85 | 7.85 | 7.85 | 7.85 |
| Carbon Content (%) | 0.17 – 0.23 | 0.42 – 0.50 | 0.35 – 0.45 | 0.50 – 0.60 |
| Tensile Strength (MPa) | 410 – 550 | 570 – 700 | 550 – 700 | 650 – 800 |
| Yield Strength (MPa) | ≥ 245 | ≥ 310 | ≥ 280 | ≥ 350 |
| Elongation (%) | ≥ 25 | ≥ 16 | ≥ 16 | ≥ 14 |
| Hardness (HB) | ≤ 170 | ≤ 229 | ≤ 201 | ≤ 255 |
| Heat Treatment | As Rolled / Normalized | Normalized / Q&T | Normalized / Q&T | Normalized / Q&T |
| Machinability | Good | Very Good | Very Good | Moderate |
| Weldability | Excellent | Good | Good | Fair |
| Typical Applications | General Engineering | Shafts, Gears | Axles, Pins | High Strength Parts |
| Testing | Chemical, Mechanical, UT | Chemical, Mechanical, UT | Chemical, Mechanical, UT | Chemical, Mechanical, UT |
| Certification | EN 10204 3.1 / 3.2 | EN 10204 3.1 / 3.2 | EN 10204 3.1 / 3.2 | EN 10204 3.1 / 3.2 |
| HSN Code | 7214 / 7228 | 7214 / 7228 | 7214 / 7228 | 7214 / 7228 |
| Export Suitability | Domestic & Export | Export | Export | Export |
Choosing the correct carbon steel round bar grade depends on application requirements:
Strength Requirement:
C45 and EN9 are preferred where higher tensile strength is required for heavy-duty components.
Heat Treatment Needs:
EN8 and EN9 can be heat treated to significantly enhance surface hardness and mechanical performance.
Inox Steel India supports these markets with ready stock, consistent quality, and export-compliant documentation.
Carbon steel round bars supplied by Inox Steel India are extensively used in industries where strength, machinability, weldability, and cost efficiency are critical. Each grade is selected based on mechanical requirements and fabrication processes.
| Industry / Sector | Typical Applications | Preferred Grades |
|---|---|---|
| General Engineering | Shafts, pins, bolts, machined components | C20, EN8 |
| Automotive | Axles, gears, studs, suspension parts | EN8, C45 |
| Forging Industry | Forged components, blanks | C45, EN9 |
| Fabrication & Structural | Frames, supports, base plates | C20 |
| Machinery Manufacturing | Couplings, rollers, spindles | EN8, C45 |
| Heavy Engineering | High-strength mechanical parts | EN9 |
These applications demand consistent mechanical properties and dimensional accuracy, ensured through controlled manufacturing and inspection.
Inox Steel India supplies carbon steel round bars in a wide range of standard and custom sizes, suitable for machining, forging, and fabrication.
Standard Diameter Range (mm)
6 mm, 8 mm, 10 mm, 12 mm, 16 mm, 20 mm, 22 mm, 25 mm, 32 mm, 40 mm, 50 mm, 65 mm, 80 mm, 100 mm and above up to 500 mm
Length Options
Finish Options
Bright bars are preferred for precision machining and dimensional accuracy, while black bars are widely used for forging and structural applications.
The approximate weight of carbon steel round bars can be calculated using the standard formula:
Weight (kg/m) = (D² × 0.006165)
Where D = Diameter in mm
This formula helps in material estimation, logistics planning, and cost calculation.
| Grade | Approx. Price INR/kg | Typical Use |
|---|---|---|
| C20 | ₹ 55 – ₹ 75 | Fabrication & general engineering |
| EN8 | ₹ 65 – ₹ 90 | Machining & automotive |
| C45 | ₹ 75 – ₹ 110 | Shafts & forged parts |
| EN9 | ₹ 90 – ₹ 130 | High-strength applications |
Prices are indicative and subject to fluctuation based on steel rates and size.
Every carbon steel round bar supplied by Inox Steel India undergoes strict quality control and inspection to ensure compliance with applicable standards.
Quality Tests Conducted
Documentation Supplied
These measures ensure reliable performance and acceptance in industrial applications.
Inox Steel India is a dependable carbon steel round bar manufacturer and supplier in Mumbai, supplying certified material for both domestic consumption and export markets.
Our Core Strengths
Our focus is to provide cost-effective, reliable raw material solutions without compromising on quality or traceability.
| Industry | Application |
|---|---|
| Automotive | Axles, shafts, suspension components |
| Engineering | Machined parts, spindles, couplings |
| Forging | Forged blanks and components |
| Fabrication | Structural frames and supports |
| Machinery Manufacturing | Rollers, pins, bushings |
| Infrastructure | Construction and industrial support parts |
Each industry is supported with technical guidance, material traceability, and dependable supply timelines.
All carbon steel round bars are packed to ensure safe handling and damage-free delivery:
Export Destinations:
UAE, Saudi Arabia, Oman, Qatar, Nigeria, South Africa, Germany, Italy, and other global markets.
Dispatches are handled through JNPT (Mumbai), Mundra, and Hazira ports.
If you are looking for a carbon steel round bar supplier near Alankar Cinema, Mumbai, Inox Steel India offers quick availability, competitive pricing, and certified material with nationwide delivery support.
Carbon Steel Round Bars Manufacturer & Supplier in Mumbai – C20, C45, EN8, EN9 | Inox Steel India
52-A, Mulji Thackersi Bldg, Islampura Street, Shop No. 10, Near Alankar Cinema, Mumbai – 400 004
alloy@inoxsteelindia.in
+91 9930796690
Prices generally range between ₹55 – ₹130 per kg, depending on grade and diameter. EN8 is commonly preferred due to good machinability and strength balance. Yes, cold drawn bright bars provide tighter tolerance and smooth surface finish. The HSN code is 7214 / 7228. Yes, we supply cut-to-length carbon steel round bars as per customer requirements. What is the price of carbon steel round bars per kg in India?
Which carbon steel round bar is best for machining?
Are bright bars suitable for CNC machining?
What is the HSN code for carbon steel round bars?
Do you provide custom cut lengths?
Inox Steel India is a leading carbon steel round bar manufacturer and supplier in Mumbai. C20, C45, EN8 & EN9 round bars at competitive price per kg in India with ASTM & EN compliance.