At George Metals, located in Houston, USA, we pride ourselves on being a top-notch manufacturer and supplier of high-quality OHNS Round Bars (Oil-Hardening Non-Shrinking Steel). Our bars are celebrated for their outstanding wear resistance, dimensional stability, and excellent machinability. OHNS is a favored tool steel grade, widely utilized in die-making and precision tooling. We ensure that our OHNS round bars meet rigorous global quality standards like ASTM A681, delivering remarkable hardness and toughness after heat treatment. Available in various diameters and lengths, our products cater to the specific needs of industries such as automotive, aerospace, mold-making, and manufacturing.
When it comes to composition and mechanical properties, our OHNS Round Bars are primarily made up of carbon (0.90–1.00%), manganese (1.0–1.2%), chromium (0.5–0.6%), along with trace amounts of vanadium and tungsten. This unique blend provides excellent hardenability and wear resistance. After oil quenching and tempering, these bars typically achieve a hardness of 57–62 HRC. They maintain their dimensional accuracy during heat treatment and showcase good toughness, machinability, and compressive strength. We offer OHNS round bars in both annealed and hardened conditions, and each batch undergoes rigorous testing for mechanical performance, chemical consistency, and surface quality to guarantee industrial-grade reliability.
| 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 |
Our OHNS Round Bars are extensively utilized in scenarios where dimensional stability, hardness, and abrasion resistance are paramount. They’re perfect for crafting blanking dies, shear blades, punches, cutting tools, forming dies, and broaches. Thanks to their superb machinability and stability during heat treatment, these bars are also employed in jigs, fixtures, measuring tools, and gauges across the automotive, aerospace, plastic injection molding, and metal stamping sectors. Their resistance to deformation and impressive edge retention make them ideal for a wide range of applications.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
George Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Houston, USA
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