Home » News » The Basics of Measuring Hardness

The Basics of Measuring Hardness

Views: 0     Author: Site Editor     Publish Time: 2022-08-22      Origin: Site

A hardness scale measures material's hardness in terms of its capacity to resist a minor load, typically three kilograms of force. A diamond-tipped cone is pressed into the material at two levels of pressure. The numbers from the cone are translated to HRC using a formula. The process can leave a mark on the material, so many makers use special scales to measure case-hardened specimens. Listed below are the basic steps of measuring hardness.

Type C numbers are commonly used for kitchen knives. These numbers range from HRC52 to HRC60. Kitchen knives, for example, should have a hardness of around HRC57 or higher, as anything lower than this is too soft to be used for cutting food. A good example of such a steel is 8Cr13MoV, which is hardened to an HRC of 57-59. This steel performs admirably in this range.

Although most kitchen knives are designed to be durable, a lower HRC rating may not mean a high quality knife. Generally speaking, kitchen knives that fall in this range will be easily sharpened, but may not hold an edge very well. In comparison, a high-HRC blade is brittle and not suitable for daily use. To determine if an HRC 55 is appropriate for your needs, consider the materials used in the knife.

An HRC55 end mill bit has a strong adaptability to the material it's used to cut. Most commonly, it's used for steel parts made from carbon steel, cast iron, and high-hard steel, including 9crsi die steel. It also has high chip removal. The hardest of the three grades is HRC55, and HRC60 and HRC65 are available for hardnesses between 60 and 65.

The hardness of the material is measured on the Rockwell hardness scale, abbreviated as HRC. Soft materials have an HRC of 52, while harder materials have higher HRCs, like stainless steel or titanium. The HRC55 long neck ball node end mill is bronze coated and is made from super raw materials, including Kennametal Metal, Sandvik Carbide, CB Carbide from Taiwan, and TiSiN Coating. This quality coating increases tool life and improves its durability. The blade is usually stamped with the number to help identify its quality.

A high-quality knife with a HRC of 55 will be durable, but may be brittle and require more work to sharpen than a lower-quality knife. HRC 55 knives are easy to sharpen, but will not hold an edge as long as those with lower HRCs. Stainless steel with a HRC of 55 or above is commonly used for professional German kitchen knives. These types of knives will retain their sharpness for a long time. They should be sharpened on a sharpening steel periodically to ensure they maintain their sharpness.

How to choose carbide end mill cutter ?

Navigating the diverse range of carbide end mill cutters available in the market can quickly seem daunting. Knowing what to look out for, however, can help you select one that precisely meets your needs. Memory-map the essential criteria to help you make the right choice when selecting a carbide end

How to choose 4mm ball nose end mill

A Detailed Guide to Choosing the Perfect 4mm Ball Nose End MillMachining and milling operations are only successful when the correct tools are put into action. Among these cutting tools, the 4mm ball nose end mill stands out for its variety of uses and capability to generate delicately curved surfac

How to choose fix tool holder ?

Maximize Efficiency with Selecting the Right Tool Holder: A Comprehensive GuideWhen it comes to machining, one of the most important factors is the selection of the right tool holder. This small, often overlooked part of the machinery can have a tremendous impact on the overall results. In this blog

Carbide Rough Milling

Elevating Efficiency Through the Power of Carbide Rough MillingLooking for a metal-cutting process with plenty of speed, impressive tool longevity, and massive productivity enhancements? Carbide rough milling may be the perfect solution. This innovative machining technique is commonly used around th

no photo
HRC65 end mill 12mm

The use of cutting tools plays a vital role in meeting the demands of various industries where precision and efficiency are essential. An integral component of these processes is the HRC65 end mill 12mm, which is used in milling machines to remove material from workpieces. This article will delve in

no photo
end mill with radius

End milling with radius has become a widespread machining technique thanks to the use of end mills. These tools possess a specialized feature in which they are designed with a rounded tip or radius at the cutting end, providing precision cuts for grooves, slots, and contours in various materials. En

no photo
how to choose ball nose milling cutter

In the manufacturing industry, ball nose milling cutters are a common tool utilized for creating rounded profiles and curves in various materials like metal, wood, and plastic. They can perform roughing and finishing work effectively in CNC machining operations. The distinctive feature of these cutt

no photo
aluminium end mill

Undoubtedly, the most widely utilized type of end mills are those designed for aluminium machining. Such popularity is due to their outstanding capacity to retrieve material at high speeds efficiently. These versatile tools were created exclusively for use with lightweight metals like aluminium—ther