O1 Tool Steel

O1 Tool Steel

A good combination of strength, hardness, and wear resistance is what most people look for in an alloy like O1 Tool Steel Round Bar.

O1 Tool Steel

It is a non-deforming, oil-hardening tool steel that is non-deformable.

It is also regarded as “non-shrinking” steel since it can be hardened to a Rockwell Range of C 65 by applying relatively low temperatures to the workpiece to set it. A good combination of strength, hardness, and wear resistance is what most people look for in an alloy like O1. In addition to the standard finish, round bar stock and flat bars are also available for the O-1. These have been finely done to a precise surface finish.

O'Hare O1 Tool Steel Round Bar

O’Hare Precision Metals can provide a wide range of company-supplied or customer-supplied components and materials. Just like how we can offer you the best O1 Tool Steel bar stocks and O1 Tool Steel round bar stocks in O’Hare!

Machinability and other Processes

When annealing, you need to heat slowly to 1450 degrees Fahrenheit, then soak thoroughly. Cool at a rate of 25 degrees Fahrenheit per hour until the temperature reaches 900 degrees Fahrenheit. Allow the air to cool to room temperature. The approximate annealed hardness is 221 Brinell at its maximum. Meanwhile, when hardening, you have to preheat the oven to 1200° F and keep it at that temperature until the beans are completely soaked.

Then,  Heat to 1475° to 1500° Fahrenheit for hardening. Soak for 30 minutes per inch of thickness in boiling water. Soak for 30 minutes per inch of thickness in boiling water. It should be quenched between 150 and 200 degrees Fahrenheit. Immediate calming measures should be taken. Usually, oil hardening steels must be single-tempered to be adequate.


Cold forming dies, swaging dies, blanking dies, cutter templates, machine parts, punches, and cutting tools are only a few of the many applications of O1 Tool Steel.




Melting point 

Hardness, Brinell 

Hardness, Rockwell

Modulus of Elasticity 

Specific Gravity 

Thermal expansion 

Elastic modulus 

 0.282 lb/in3

85-90% of a 1%



C 34.0-64.0

31 x 106 psi


6/ºC 20-260

28000 ksi

Chemical Properties





















Best O1 Tool Steel Bar

Tool steel is a type of steel used to make cutting tools. Tool steel bar stock is a type of tool steel that is used to make small cutting tools. Tool steels such as O1 tool steel bar stock have different strengths and weaknesses that depend on the type of metal they contain. These strengths and weaknesses determine what kind of cutting tool can be made from them.

It is the most commonly used material in manufacturing tools. O1 tool steel is a high-carbon, oil-hardening steel that provides excellent wear resistance and toughness. It offers more corrosion resistance to water and air than carbon steel.

O1 tool steel bar is a versatile material that can be used for many different applications. It has been designed specifically for use in cutting tools and dies because of its toughness, wears resistance, and ability to hold an edge at high temperatures.

This is also a high-carbon, low-alloy tool steel. It has a high hardness, good toughness, and wear resistance. O1 tool steel bar can be used in the manufacturing of forming tools such as dies or punches. Lastly, O1 Tool Steel Round Bar is an excellent choice for general purpose applications where toughness and wear resistance are important considerations, such as for gears, cams, shafts, and other miscellaneous parts that come into contact with abrasive materials.

Why Get O1 Tool Steel Round Bar?

When it comes to O1 tool steel bar stock, O’Hare Precision Metals is the one-stop shop for all your needs. O1 Tool Steel is high carbon steel that has good wear resistance and toughness.

The o1 tool steel round bar is also very durable and can withstand high temperatures. That is why it is an excellent choice for heavy-duty applications. Good thing that O’Hare Precision Metals offers O1 tool steel bar stock or o1 tool steel round bar at competitive prices.

Want to know more about O1 Tool Steel? Just contact our highly skilled personnel in O’Hare Precision Metals. They are dedicated to providing smooth-flow service. Request a quote for O1 Tool Steel bar stocks nowit