OHNS Round Bar is an oil-hardened, non-shrinkage steel alloy grade. This term refers to steel grades that exhibit little change in volume in an annealed condition after being hardened and tempered at relatively low temperatures.
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OHNS Round Bar

Din 1.2510 Rod

AISI O1 Tool Steel Square Bars
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The Ohns Steel Material is required for master tools, gauges as well as dies. To simplify, the Ohns Rod is used in applications which stresses the importance that the size of the component not be changed once it has been hardened after being machined in an annealed condition. Hence, this OHNS High Speed Steel Bar is supplied in an annealed condition. Speaking about the characteristics of the alloy, the OHNS Bright Bar exhibits good durability, while offering excellent wear resistance properties and holds a good cutting edge.
With these properties, this tool grade OHNS Bar 1.2510 is regarded to be an excellent general purpose alloy. Therefore, the DIN 1.2510 Round bar is often used where the expense of a high carbon high chromium tool steel is an alloy grade that would not be justified. Following a proper annealing procedure will result in the OHNS Steel Flat Bar inheriting a maximum hardness value of 212 HBW.
Soft Annealing °C
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750-780
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Cooling
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Furnace
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Hardness HB
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max. 230
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Stress-relief Annealing °C
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approx. 650
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Hardening °C
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780-820
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Quenching
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Air, Oil, Salt Bath 180-220°C
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Hardness after quenching HRC
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65
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C
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Si
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Mn
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P
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S
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Cr
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W
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0.85-1.00
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0.15-0.35
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1.00-1.20
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0.030max
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0.030max
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0.50-0.70
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0.50-0.70
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We maintain stock of AISI O1 Tool Steel, DIN 1.2510 Round bar, OHNS Steel Bar at factory price
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supply OHNS Steel Flat Bar, OHNS Bar, OHNS Die Steel Bar in China and more than 60 location worldwide
- Dimensions: 25-210 x 65-510 , 10mm – 410mm
- Grade: D3, 1.2080, D2, 1.2379, H13, 1.2344, H11, EN31 , 52100, OHNS , 1.2510
- Standard: AISI, ASTM, BS, DIN, GB
- Application: TOOL & DIE STEEL
- Alloy Or Not: Non-alloy
STANDARDS
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100MnCrW4
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O1
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DIN 2510
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AISI O1
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AFNOR 90MWCV5
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JIS SKS3
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- High hardness
- Incredible durability
- Free from rust
- Supreme finish
Leading exporter of OHNS Alloy Steel Round Bar, OHNS High Speed Steel Bar and Bright Bar
Thermal Conductivity at °C
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W / (m*K)
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20
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33.4
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350
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32.1
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700
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31.1
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