Neil Metals, based in Kolkata, India, stands out as a top-notch manufacturer and supplier of high-quality OHNS Round Bars, providing robust tool steel solutions for various industries, including manufacturing, automotive, die-making, and engineering. With a commitment to precision, reliability, and adherence to international quality standards, Neil Metals specializes in OHNS (Oil-Hardening Non-Shrinking) round bars that are celebrated for their outstanding dimensional stability, wear resistance, and toughness. Supported by state-of-the-art production facilities and rigorous quality control measures, Neil Metals guarantees timely deliveries and customized specifications, making them a go-to partner for clients in need of durable, heat-treatable tool steels for critical industrial applications.
OHNS Round Bars are crafted from oil-hardening tool steel, which includes carbon (around 0.90–1.00%), chromium (0.40–1.00%), manganese (1.00–1.20%), and tungsten (0.50–0.70%), with iron making up the rest. This unique blend of elements results in exceptional wear resistance, toughness, and hardenability. The bars boast a tensile strength of about 850–1000 MPa and achieve high surface hardness after heat treatment, typically reaching 60–64 HRC. OHNS also offers good machinability in its annealed state and retains its shape and size during hardening, making it perfect for high-precision tools and die applications.
| Grade | OHNS Round Bar |
|---|---|
| Specification | aaaaaaaaaaaaa |
| OHNS Square bar size | 4 to 100mm |
| OHNS Steel Hollow Bar | 32mm OD x 16mm ID to 250mm OD x 200mm ID) |
| OHNS High Speed Steel Hex Bar size | 2-100mm A/F |
| OHNS Angle bar size | 3mm*20mm*20mm~12mm*100mm*100mm |
| OHNS Steel Rectangles Size | 33 x 30mm to 295 x 1066mm |
| OHNS High Speed Steel Flat bar size | Thickness: 2 -100mm |
| Width: 10 to 500mm | |
| OHNS Channel Bar | 80 x 40mm to 150 x 75mm section; 5.0 to 6.0mm thickness |
| OHNS Steel Section | 3.0 to 12.0mm thickness |
| OHNS High Speed Steel Round bar size | Diameter: 3-~800mm |
| OHNS Billet Size | 1/2″ to 495mm Diameter |
| OHNS Steel Round Bar Standard Dimensions | Diameter / Height: |
| OHNS Surface | Bright, Hot Rolled Pickled, Cold Drawn, Sand Blasting Finished, Polished, Hairline |
| OHNS Steel Tolerance | H8, H9, H10, H11, H12, H13K9, K10, K11, K12 or as per clients’ requirements |
| OHNS High Speed Steel Technique | OHNS Hot Rolled, Cold Drawn, Cold Rolled, Forged Round Bar, Rod |
| OHNS Condition | Hardened & tempered, annealed |
| Finish | Cold (bright) drawn, centreless ground, hot rolled, smooth turned, peeled, slit rolled edge, hot rolled annealed, Rough Turned, Bright, Polish, Grinding, Centreless Ground & Black |
| Form | OHNS Round, Rod, T-Bar, Channel Bar, Precision Ground Bar, Flat Bar, Square Bar, Blocks, Round Rod, Rings, Hollow, Triangle, Rectangle, Hex (A/F), Threaded, Half Round Bar, Profiles, Billet, Ingot, I/H Bar, Forging etc. |
| Processing | Bar cutting to 650mm |
| Our OHNS Round bar conforms to NACE MR0175/ISO 15156 | |
| C | Si | Mn | P | S | Cr | W |
| 0.85-1.00 | 0.15-0.35 | 1.00-1.20 | 0.030max | 0.030max | 0.50-0.70 | 0.50-0.70 |
| Maximum Stress(N/mm²) | Yield Stress(N/mm²) | Elongation | Impact Strength (joule) | Hardness value (BHN) |
| 950 | 465 | 10% | 25 | 288 |
| STANDARDS | 100MnCrW4 | O1 | DIN 2510 | AISI O1 | AFNOR 90MWCV5 | JIS SKS3 |
OHNS (Oil Hardened Non-Shrinking) round bars are sized based on their diameter, typically ranging from 6 mm to 300 mm, with standard lengths ranging from 3 meters to 6 meters.
OHNS (Oil Hardened Non-Shrinking) rods are available in different grades, such as OHNS 1, OHNS 2, and OHNS 3, varying in hardness, toughness, and application suitability for manufacturing and toolmaking.
Yes, laser welding can be used for OHNS (Oil Hardened Non-Shrinking) bar, as it offers precision, minimal heat input, and controlled weld quality, making it suitable for hardenable tool steels.
Industries that demand high surface hardness, dimensional stability, and excellent wear resistance widely utilize OHNS Round Bars. They are commonly used in the manufacturing of dies, punches, cutting tools, reamers, shear blades, and machine tool parts. In the automotive industry, these bars are essential for forming and shaping tools. Their oil-hardening properties ensure minimal distortion during heat treatment, making them ideal for precision tools. OHNS is also favored in metal stamping, woodworking, and plastic molding processes. Its toughness and reliability under repeated impact and abrasive conditions make OHNS round bars indispensable for high-performance tooling and industrial applications.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Neil Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Kolkata, India
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