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OHNS steel is a general-purpose tool steel that is typically used in applications where alloy steels cannot provide sufficient hardness, strength, and wear resistance. Chemical composition of OHNS is Carbon 0.94%, Manganese 1.2%, Silicon 0.30%, Chromium 0.50% and Vanadium 0.15%.
Din 2379 Consolidates maximum wear resistance, great durability, exceptional front line maintenance, and treating resistance 12 % ledeburitic chromium steel. It can be nitrided after special heat treatment. It can be utilized as threading rolls and dies, icy trimming, cutting and stamping tools for sheet thickness’s up to 6 mm, accuracy cutting instruments for sheet thicknesses up to 12 mm.
- Blanking and stamping dies,
- Rotary shear blades,
- Thread cutting tools,
- Milling cutters,
- Measuring tools,
- Gauging tools,
- Woodworking tools,
|STANDARDS||100MnCrW4||O1||DIN 2510||AISI O1||AFNOR 90MWCV5||JIS SKS3|
Addition to other grades:
MS, EN1A, EN3B, EN8, EN8D, EN9, EN19, EN24, EN31, EN32B, EN36C, EN41B, EN43B, EN47, EN353, IS2062, 42Crmo4, HCHCR, D2, D3, H-11, H-13, CW-1, M2, M35, M42, 2714, SKD-11, P20, P20+S, P20+Ni, SCM 420, ASTM SA-36, ASTM SA-105, SAE 1018, SAE 1020, SAE 4140, SAE 8620, 16MNCR5, 20MNCR5, C20, C35, C40, C45, C50, C60, CK45, 20C8, 40C8, 45C8, 55C8, C55MN75, SAE 52100, S40C, S355J2G3.
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The following table shows the chemical composition of OHNS steel:
|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|
|Maximum Stress(N/mm²)||Yield Stress(N/mm²)||Elongation||Impact Strength (joule)||Hardness value (BHN)|
|Soft Annealing °C||750-780|
|Hardness HB||Max. 230|
|Stress-relief Annealing °C||Approx. 650|
|Quenching||Air, Oil, Salt Bath 180-220 °C|
|Hardness after quenching HRC||65|
O1 steels should be heated uniformly to 780-820°C (1436-1508°F) until completely heated through. If needed, the steels can be preheated at 300-500°C (572-932°F). About 30 min/per 25 mm of the ruling section is to be provided and then the steels should be immediately quenched in oil.
Tempering of O1 steels is performed at 177-260°C (350-500°F) to realize Rockwell C hardness of 62 to 57.
|Thermal Conductivity at °C||W / (m*K)|