OHNS Round Bars Supplier and Stockist in Mumbai, India
About OHNS Round Bars
IMI Alloys India LLP stocks and supplies OHNS round bars in diameters from 10 mm to 200 mm, cut to length for tool rooms and machine shops across Mumbai. The grade is appropriate for press tooling, dies, gages, and mastering tools where component size must remain constant after hardening. Every batch ships with mill test certificates, and orders leave the Mumbai stockyard packed to prevent transit damage.
OHNS Round Bar Supplier | OHNS Material Price Per Kg & Chemical Composition
OHNS stands for oil-hardening non-shrinking steel. The grade hardens through soft annealing, controlled cooling, stress relief, and oil quenching. This sequence locks in dimensional stability after machining, which matters most when a die or gauge cannot afford to change size after heat treatment.
Buyers asking about OHNS material price per kg usually compare it against D2 or H13 first. The OHNS chemical composition keeps carbon around 0.85 to 0.95%, manganese between 1.00 and 1.30%, chromium at 0.40 to 0.60%, tungsten at 0.40 to 0.60%, and silicon between 0.10 and 0.40%, with vanadium generally under 0.20%. This lower alloy content is why the bar costs less than high-chromium tool steels. Chromium and tungsten additions drive up raw material costs directly, so a leaner composition keeps the number down.
OHNS Round Bar Specifications, Sizes, Grades & Material Cost Per Kg
Corrosion resistance holds up against acids and general workshop atmosphere exposure. Tensile strength and cutting-edge retention stay consistent from batch to batch. Most tool rooms use the bar in its annealed state before final machining, then harden the finished component separately. Compare this against our alloy steel round bar range for grades with different chromium content.
Round bars ship in diameters from 10mm through 200mm, cut to length on request. Applications center on master tools, gauges, dies, punches, and press tooling, where size retention after hardening decides whether the part passes inspection.
The OHNS material cost per kg shifts with diameter, order quantity, and current raw material rates, so a fixed figure rarely holds for long. What stays constant is the wear resistance and the resistance to deformation under repeated stress cycles, both a result of the hardening process described above. Surface finish stays smooth, and rust does not set in easily during storage. Full mill test certificates come with every dispatch.
IMI Alloys India LLP runs its own stockyard in Mumbai and packs bars to prevent transit damage.
Request a quote for OHNS round bar sizes and delivery timelines specific to your project.
Specifications of OHNS Round Bars
- Dimensions : ASTM / ASME
- Form : Round
- Diameter : 10 mm ~ 900 mm
- Size : 0.08 mm to 25.00 mm
- Diameter Range : 0.040 mm – 12 mm (0.0016” – 0.4724”)
- Technique : OHNS Hot Rolled, Cold Drawn, Cold Rolled, Forged Round Bar, Rod
- Condition : Hardened & tempered, annealed
- Application : Blanking Dies, Bushings, Forming Dies, Master Tools, Forming Rolls, Gauges, Trim Dies etc
Equivalent Grades of OHNS Round Bars
| STANDARDS | 100MnCrW4 | O1 | DIN 2510 | AISI O1 | AFNOR 90MWCV5 | JIS SKS3 |
Chemical Composition of OHNS Round Bar
| Element | C | Si | Mn | P | S | Cr | W |
| Content(%) | 0.85-1.00 | 0.15-0.35 | 1.00-1.20 | 0.03 Max | 0.03 Max | 0.50-0.70 | 0.50-0.70 |
Mechanical Properties of OHNS Round Bars
| Maximum Stress(N/mm²) | Yield Stress(N/mm²) | Elongation | Impact Strength (joule) | Hardness value (BHN) |
| 950 | 465 | 10% | 25 | 288 |
Applications For OHNS Round Bars
Generally, OHNS tool steels are used for long run tooling applications, Some main applications for OHNS Tool & Dai Steel Round Bars materials are:
- Blanking Dies
- Bushings
- Forming Dies
- Master Tools
- Forming Rolls
- Gauges
- Trim Dies
Export Destinations for OHNS Round Bars
Countries
Cities
FAQs
What is the OHNS material price per kg?
The price depends on the bar’s diameter, order volume, and current steel market rates. It has lower chromium and tungsten content than D2 or H13 tool steel.
What is the chemical composition of OHNS steel?
Carbon runs 0.85 to 0.95%, manganese 1.00 to 1.30%, chromium 0.40 to 0.60%, tungsten 0.40 to 0.60%, and silicon 0.10 to 0.40%, with vanadium kept under 0.20%.
What are OHNS round bars used for?
Master tools, gauges, dies, and press tooling, wherever the component size must stay unchanged after hardening.
What is the difference between OHNS and D2 tool steel?
D2a carries a far higher chromium content, near 11 to 13%, which pushes up both hardness capability and cost. OHNS trades some of that hardness range for a lower material cost and easier machinability.
How is the OHNS material cost per kg determined?
Diameter, order quantity, current alloy steel rates, and processing requirements together set the per kg cost.
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