As people are now increasingly updating many industries in the electrical industry, automobile industry, and electronic equipment industry, such as mobile phones, tablet computers, and smart wearable devices, the requirements for equipment are constantly improving. The high-speed steel tools in our CNC lathes are also constantly improving. Increased demand. Let’s take a look at the main materials used for high-speed tools?

Despite the increasingly fierce competition from solid carbide tools, high-speed steel tools are still widely used due to their affordable price, high hardness and high toughness. The most significant feature of high-speed steel tools is their excellent toughness. They are most suitable for use in production workshops that are diversified and care about tool costs. They play a major role in effectively and reliably processing various parts. In the current global economic environment, product quality based on cost-effectiveness has proven to be more attractive.


In order to support the global demand for high-speed steel tools, cutting tool manufacturers have increased investment, including increased R&D investment. These investments have made high-speed steel tools more reliable, improved their quality, reduced production costs, and shortened production cycles. Improved matrix materials, including powder metallurgy and coating, further promote the performance of high-speed steel tools.


A typical high-speed steel composition contains 4% chromium, 6% tungsten, 5% molybdenum, 2% vanadium, and 1% carbon. Different materials of high-speed steel have different content of added elements. As a result, tool materials with high toughness are less prone to fracture.


The commonly used cobalt-rich high-speed steel (HSS-E) has a slightly different composition content. The cobalt content is increased to 5%-8%, the molybdenum content can reach 9%, and the tungsten content is reduced to 1.5%. Compared with ordinary high-speed steel, this difference in composition content can bring higher red hardness and wear resistance. Generally, tools with more cobalt are used for special applications. In our daily life, the high-speed tools of CNC lathes are generally PM23 powder high-speed steel tools. What is it like?

PM23 powder high speed steel

PM23 is chromium-molybdenum-tungsten-vanadium powder high-speed steel, which belongs to the Swedish standard. It typically represents Sweden ASSAB and Guanding Special Steel. The same series include PM50, PM60 powder high-speed steel, and sometimes it is also written as ASSAB PM23 powder high-speed steel.

PM23 powder high speed steel chemical composition: /PM23 powder high speed steel


Carbon (C) 1.28, Chromium (Cr) 4.2 Tungsten (W) 6.4 Molybdenum (Mo) 5.0 Vanadium (V) 3.1

PM23 factory state: /PM23 powder high speed steel

HB 260

PM23 hardness: /PM23 powder high speed steel


Brief introduction of PM23 powder high speed steel: /PM23 powder high speed steel

PM23 powder high-speed steel is chromium-molybdenum-tungsten-vanadium powder high-speed steel, which belongs to the Swedish standard. The same series include PM50 and PM60 powder high-speed steel, sometimes also written as PM23.

PM23 features:


1. High wear resistance (anti-abrasive wear)

2. High compressive strength

3. Very good full hardening

4. Good toughness

5. Good dimensional stability of heat treatment

6. Good resistance to tempering and softening