Rupal Metals stands out as a top-notch manufacturer and supplier of high-quality OHNS (Oil Hardened Non-Shrinking) Round Bars, right in the heart of Delhi, India. Renowned for their exceptional tool steels, Rupal Metals delivers OHNS round bars that boast impressive hardness, dimensional stability, and excellent machinability. These bars are perfect for applications that demand precision and wear resistance. With cutting-edge manufacturing facilities and rigorous quality control, Rupal Metals offers OHNS round bars in various sizes and finishes, catering to the specific needs of the tool-making, die, and machinery sectors both in India and around the globe.
OHNS (Oil Hardened Non-Shrinking Steel), also referred to as DIN 1.2510 or AISI O1, is a high-carbon, high-chromium tool steel with a typical makeup of carbon (0.85–1.00%), chromium (0.40–0.60%), manganese (1.00–1.20%), and tungsten (0.40–0.60%). It delivers remarkable wear resistance, toughness, and dimensional stability after heat treatment. OHNS round bars typically have a tensile strength ranging from 700 to 900 MPa in their annealed state and can be hardened to 57–62 HRC. Their ability to maintain a sharp edge and resist deformation makes them ideal for cutting tools and dies.
| 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.
Rupal Metals’ OHNS Round Bars find extensive use in the tool-making and precision engineering industries. They are commonly used to manufacture punches, dies, blanking tools, cutting tools, knives, gauges, and shear blades. Thanks to their oil-hardening properties and non-shrinking nature during heat treatment, OHNS steel is the preferred choice for applications that require dimensional accuracy and wear resistance. It excels under moderate impact and high abrasion conditions. Additionally, OHNS round bars are utilized in mold making, forging dies, and press tools, providing reliable performance across various applications.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Rupal Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Delhi, India
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