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O6 Tool Steel

Get the edge you need with O6 tool steel for cutting-edge applications.

O6 tool steel: the go-to material for demanding cold-working operations

Discover the versatility of O6 tool steel for a wide range of industrial applications.

O6 tool steel, also known as oil-hardening cold-work steel, is a high-carbon, high-chromium steel that exhibits excellent wear resistance, toughness, and dimensional stability. It belongs to the O-series of tool steels, which are known for their oil-hardening properties.It is primarily used for applications that require high hardness, strength, and resistance to wear and abrasion.

Uses and Applications of O6 Tool Steel

The tool steel finds a wide range of uses in various industries. It is commonly employed in manufacturing tools and dies for cold-working applications, such as blanking, drawing, and forming of metal parts. It is also suitable for producing punches, reamers, broaches, and other cutting tools that require high wear resistance and toughness. Additionally, it is utilized in the production of machine parts subjected to high stress and wear, such as gears, shafts, and bushings.

In the woodworking industry, it is used for producing cutting tools and knives for woodworking machines. Its hardness and edge retention properties make it ideal for cutting and shaping wood materials. O6 tool steel is also utilized in applications where resistance to impact and chipping is essential, such as industrial knives, chisels, and shearing blades.

Machinability and Weldability of O6 Tool Steel

It offers good machinability, allowing for the production of precise and complex components. It can be machined using conventional methods, but it is essential to use proper cutting tools, speeds, and feeds to optimize tool life and achieve desired results. Due to its high hardness, it may require annealing or heating treatments before machining.

In terms of weldability, it can be welded using conventional methods such as gas tungsten arc welding (GTAW) or gas metal arc welding (GMAW). However, it is crucial to preheat the material and use suitable filler metals to ensure proper fusion and prevent cracking. Post-weld heat treatment may also be necessary to restore the hardness and properties of the weld zone.

In summary, O6 tool steel is a high-carbon, high-chromium steel with excellent wear resistance, toughness, and dimensional stability. It finds applications in various industries, including tool and die making, cold-working operations, woodworking, and general machine parts. With good machinability and weldability, it provides versatility and reliability for demanding applications that require high hardness, strength, and wear resistance.



specific gravity 

Poisson’s ratio 

Elastic modulus 

Bulk modulus 

Shear modulus 

0.277 lb/in3



27557-30458 ksi

20300 ksi

11600 ksi

Chemical Properties










Carbon 1.25-1.55

Silicon 0.55-1.50








O’Hare Precision Metals: Trusted O6 Tool Steel Suppliers for Superior Quality

As one of the industry’s leading O6 tool steel suppliers, O’Hare Precision Metals sets the standard for excellence. Known for their unwavering commitment to providing high-quality materials, they are the trusted source for O6 metal that meets and exceeds customer expectations.

With an extensive inventory of O6 steel sourced from reputable manufacturers, O’Hare Precision Metals ensures the highest standards of hardness, strength, and dimensional accuracy. Their rigorous quality control processes guarantee that each tool steel bar meets the strictest industry standards, making them the go-to supplier for reliable and durable materials.

What sets O’Hare Precision Metals apart as O6 tool steel suppliers is their deep expertise and knowledge of the material. Their experienced team understands the unique properties and applications of this tool steel, enabling them to provide valuable guidance and technical support to customers. From selecting the right dimensions and grades to addressing specific requirements, O’Hare Precision Metals delivers personalized solutions tailored to each customer’s needs.

O’Hare Precision Metals prides itself on its commitment to customer satisfaction. With efficient order processing and prompt service, they prioritize delivering a seamless experience to their customers. By consistently providing superior quality materials and building long-lasting relationships based on trust, O’Hare Precision Metals solidifies its position as the trusted O6 tool steel supplier.

For unparalleled quality and reliability, choose O’Hare Precision Metals as your trusted supplier of tool steel. Our commitment to excellence, extensive inventory, and customer-centric approach ensure that you receive top-notch steel for your critical applications. Experience the difference that O’Hare Precision Metals brings to the table and elevate your projects with their superior materials and exceptional service. Contact us now!