Grades: EN8, C45, ASTM A36
Inox Steel India is a manufacturer, supplier, and exporter of carbon steel hex bars, supplying to engineering and fabrication industries across India, GCC countries, the Middle East, Africa, Europe, and North & South America.
Carbon steel hex bars are supplied in EN8, C45, and ASTM A36 grades, manufactured in accordance with EN 10083 and ASTM standards. These grades are widely used where mechanical strength, machinability, and cost efficiency are primary requirements.
With controlled sourcing and standard-compliant processing, carbon steel hex bars supplied by Inox Steel India offer uniform across-flat dimensions, consistent mechanical properties, and suitability for machining and fabrication applications.
A carbon steel hex bar is a solid long product with a hexagonal (six-sided) cross section, used in applications requiring positive spanner grip, torque transmission, and structural strength. Compared to round bars, hex bars provide improved resistance to rotation and are commonly used for nuts, bolts, studs, and machined components.
Carbon steel hex bars are produced from carbon steel billets using hot rolling, cold drawing (bright bar process), or forging, followed by heat treatment and finishing to meet dimensional and mechanical requirements.
These characteristics make carbon steel hex bars suitable for general engineering and structural applications.
Carbon steel hex bars are supplied in the following grades:
Materials are supplied as per EN 10083 and ASTM A36 specifications.
MASTER TECHNICAL DATA SHEET- CARBON STEEL HEX BARS
Grades: EN8 | C45 | ASTM A36
Manufacturer, Supplier & Exporter: Inox Steel India
| Parameter | EN8 | C45 | ASTM A36 |
|---|---|---|---|
| Product Form | Hexagonal Bars (Solid) | Hexagonal Bars (Solid) | Hexagonal Bars (Solid) |
| Standard | EN 10083 | EN 10083 | ASTM A36 |
| Material Type | Medium Carbon Steel | Medium Carbon Steel | Structural Carbon Steel |
| Manufacturing Process | Hot Rolled / Bright (Cold Drawn) | Hot Rolled / Bright (Cold Drawn) | Hot Rolled |
| Surface Finish | Black / Bright | Black / Bright | Black |
| Supply Condition | As Rolled / Normalized | As Rolled / Normalized | As Rolled |
| Carbon (C) % | 0.36 – 0.44 | 0.42 – 0.50 | ≤0.26 |
| Manganese (Mn) % | 0.60 – 1.00 | 0.50 – 0.80 | 0.80 – 1.20 |
| Silicon (Si) % | ≤0.40 | ≤0.40 | ≤0.40 |
| Tensile Strength (MPa) | 550 – 700 | 570 – 700 | ≥400 |
| Yield Strength (MPa) | ≥280 | ≥310 | ≥250 |
| Elongation (%) | ≥16 | ≥14 | ≥20 |
| Hardness | 180 – 210 HB | 190 – 220 HB | ≤180 HB |
| Machinability | Good | Good | Moderate |
| Weldability | Fair | Fair | Good |
| Standard AF Sizes (mm) | 8 – 60 | 8 – 60 | 8 – 60 |
| Approx. Weight @12 mm AF | 0.98 kg/m | 0.98 kg/m | 0.98 kg/m |
| Approx. Weight @20 mm AF | 2.72 kg/m | 2.72 kg/m | 2.72 kg/m |
| Approx. Weight @30 mm AF | 6.11 kg/m | 6.11 kg/m | 6.11 kg/m |
| Standard Length | 3 m / 6 m | 3 m / 6 m | 3 m / 6 m |
| Custom Cut Length | Available | Available | Available |
| Dimensional Tolerance | As per EN | As per EN | As per ASTM |
| Testing | Chemical, Mechanical | Chemical, Mechanical | Chemical, Mechanical |
| Certification | EN 10204 3.1 | EN 10204 3.1 | EN 10204 3.1 |
| HSN / HS Code | 7214 | 7214 | 7214 |
| Typical Applications | Fasteners, Shafts, Machining | Mechanical Parts, Gears | Structural & Fabrication |
| Packaging | Bundled / Wooden Crates | Bundled / Wooden Crates | Bundled / Wooden Crates |
When selecting carbon steel hex bars, the following parameters should be evaluated:
Proper grade selection ensures performance reliability and cost efficiency.
In India, carbon steel hex bars are commonly used by fastener manufacturers, CNC machining units, fabrication workshops, and structural component manufacturers, particularly in industrial regions such as Mumbai, Pune, Ahmedabad, Ludhiana, and Coimbatore.
Export demand is driven by engineering goods, machinery parts, and general fabrication components requiring EN and ASTM-compliant carbon steel bars.
Carbon steel hex bars supplied by Inox Steel India are used in applications requiring mechanical strength, machinability, and cost-effective performance. Selection of grade depends on load conditions, machining requirement, and fabrication method.
Carbon steel hex bars are supplied in standard metric hex bar sizes in accordance with EN and ASTM tolerances.
(Refer to hex bar size chart in mm India and standard hex bar sizes in mm PDF for detailed dimensions and weights.)
| AF Size (mm) | Approx. Weight (kg/m) |
|---|---|
| 8 | 0.43 |
| 10 | 0.68 |
| 12 | 0.98 |
| 16 | 1.74 |
| 20 | 2.72 |
| 25 | 4.25 |
| 30 | 6.11 |
| 40 | 10.86 |
| 50 | 16.90 |
| 60 | 24.60 |
Weights are indicative and may vary based on tolerance and finish.
| Grade | Approx. Price Range (INR / kg) |
|---|---|
| EN8 | ₹ 65 – ₹ 90 |
| C45 | ₹ 70 – ₹ 100 |
| ASTM A36 | ₹ 55 – ₹ 80 |
Prices depend on size, finish (black / bright), quantity, and prevailing market conditions.
HSN Code: 7214
Applicable for carbon steel bars and rods under Indian and international trade classification.
Carbon steel hex bars are inspected as per applicable standards before dispatch.
Material can be supplied with EN 10204 3.1 certification on request.
Inox Steel India supplies carbon steel hex bars with controlled sourcing, standard compliance, and documented traceability. Material is processed and inspected to meet project requirements for machining, fabrication, and structural use.
Key supply features:
Carbon steel hex bars are supplied to the following industries:
Grade selection is aligned with load conditions, machining requirements, and fabrication practices.
Carbon steel hex bars are packed and dispatched as per standard industrial and export practices.
Dispatch is supported through JNPT (Mumbai), Mundra, and Hazira ports for export shipments.
Whether you require EN8 hex bars for machining, C45 hex bars for higher strength applications, or ASTM A36 hex bars for fabrication, our team will assist with grade selection, pricing, and delivery schedules.
52-A, Mulji Thackersi Bldg, Islampura Street, Shop No. 10, Near Alankar Cinema, Mumbai – 400 004
alloy@inoxsteelindia.in
+91 9930796690
Standard across-flat sizes range from 8 mm to 60 mm. Other sizes can be supplied on request.
Yes, tool steel hex bars can be supplied in annealed or hardened & tempered condition.
The applicable HSN code is 7228.
Yes, custom cut lengths are available as per requirement.
Material can be supplied with EN 10204 3.1 test certification on request.
Manufacturer and supplier of carbon steel hex bars in EN8, C45, and ASTM A36 grades. Standard and custom sizes available across India from Inox Steel India.