Dhruv Metals, based in Hyderabad, India, stands out as a trusted and seasoned manufacturer and supplier of OHNS (Oil Hardening Non-Shrinking) Round Bars. They specialize in delivering top-notch tool steel products that are crafted for outstanding wear resistance, toughness, and dimensional stability. With a strong commitment to quality assurance, precision manufacturing, and customer satisfaction, Dhruv Metals ensures that their OHNS round bars comply with both Indian and international standards. Their state-of-the-art facilities and technical know-how guarantee consistent mechanical performance and tight tolerances. Dhruv Metals caters to a variety of industries, including automotive, tooling, die-making, and general engineering, providing reliable OHNS round bars tailored to meet diverse industrial requirements.
OHNS Round Bars are primarily composed of high carbon and high chromium tool steel, typically featuring around 0.9–1.1% carbon, 0.5–0.8% manganese, 0.5–1.0% silicon, and 0.5–1.5% chromium, along with trace amounts of vanadium. This specific composition delivers excellent hardenability and wear resistance while ensuring good toughness. In terms of mechanical properties, OHNS steel boasts a tensile strength of approximately 850–1000 MPa and is recognized for its ability to harden in oil, achieving impressive hardness levels (up to 62 HRC) post heat treatment. Its non-shrinking characteristic during heat treatment makes it an ideal choice for precision tools.
| 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.
OHNS Round Bars find extensive use in applications that require high wear resistance and dimensional accuracy after hardening. In the tooling and die-making sector, they are perfect for crafting dies, punches, cutting tools, and shear blades. The automotive industry utilizes them for components such as gauges, mandrels, and forming tools. Additionally, OHNS is well-suited for hand tools, woodcutting tools, and various machine parts that demand edge retention and impact resistance. Thanks to its oil-hardening capability and minimal distortion during heat treatment, OHNS round bars are a favored option for precision engineering and industrial tooling applications.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Dhruv Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Hyderabad , India
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