M42 W2Mo9Cr14VCo8 SKH59 1.3247 High-Speed Steel

M42 steel (W2Mo10Cr4Co8) is a high-cobalt toughness high-speed steel, mainly used for high-toughness precision wear-resistant hardware cold stamping die, and can also be used for cutting tools and knife cooling.

The M42 steel has a high hardness of 68~70HRC, good heat hardness, high temperature hardness and easy grinding. but the toughness is slightly poor, and the lower limit should be used for quenching. Due to its good grindability, it can be used to manufacture a wide range of high precision and complex tools.

Similar Grade

Main Chemical Composition%

Size

• Round Bar/mm

• Specification for Hot-rolled flat bar in common use/mm (black surface)

M42 High Speed Steel Heat Treatment Process

The hardening and tempering process can greatly improve the hardness and wear resistance and toughness of M42 high-speed steel. The standard heat treatment process is shown below:

Annealing:

• To anneal the steel, stress relieve and improve machinability.

Quenching:

• Increases hardness and wear resistance through rapid cooling.

Tempering:

• Gets accomplished after quenching to relieve internal stress and adjust hardness for improved performance.

Heat treatment reference

HSS M42 Isothermal spheroidizing

Annealing–Quenching-Tempering graph (HRC：65-67）

Performance After Heat Treatment

• Remarkable Hardness:

  65–67 HRC, very good for demanding cutting tasks.

• Superior Wear Resistance:

  Dense matrix structure designed for large-scale, long-time cutting.

• Reliable Toughness:

  Stress-relieved material that can withstand high impact for new machining styles

Maintenance Tips

• Regulation of cooling speed: strict control of the cooling speed of quenching to prevent uneven hardness or cracking.

• Multiple cycli of tempering: minimum two cycli to remove internal stress and increase toughness.

• Avoid Too Much Heat: Too much heat raises the risk of the grain getting coarsed and also burnt.

Why Choose Our M42 High-Speed Steel?

• Better value for money

  • Same Quality, Lower Price:

    M42 high-speed steel provides proper quality as Japanese, European and American brands, but at a more competitive price. Through an intense smelting process and strict quality control we provide great convenience to our clients with an excellent quality / price ratio.

• Advanced Production Equipment
  • Leading Smelting Process:

    Our M42 steel features a consistent microstructure and refined carbide distribution with the use of EAF + LF + VD + RS ESR technology, which enables high toughness and wear resistance.

  • Advanced Heat Treatment:

    We use an advanced heat treatment process that trains toughness and hardness severely increases their performance under high stress and high temperature conditions.

• Stable Product Quality

  • Consistent Material Quality：

    From raw material selection to final product manufacturing, we own the production process from start to finish. This bodes for uniform quality and performance from every batch.

  • International Standards Compliant：

    Usage of domestically produced M42 high-speed steel has been adopted for our products, and the quality standard of our products meets the domestic standard GB/T 9943-2008 as well as the international standard AISI M42, JIS SKH59 and DIN 1.3247, providing the customers with the international sense of security.

• Technical Expertise

  • Research and Development：

    Our company follows the “13th Five-Year Plan” of the National Ministry of Science and Technology, and enjoys government funding and technical support, and that can ensure our sustained innovation.

  • Our unique technology：

    We can create a proprietary rapid solidification electro-slag remelting (RS ESR) process in partnership with Shanghai University and Beijing Iron & Steel Research Institute. However, for high-performance applications, it is crucial to improve the purity of the materials and achieve a consistent distribution of the carbides.

  • Spray Forming HSS：

    We have independently developed a spray forming process for high-speed steel, in cooperation with the Baosteel Group and other advanced enterprises. It is the only one for this new manufacture process of M42 steel in the whole of China.

Microstructure

Surface condition

Working with M42 High-Speed Steel in Application

1. Cutting Tools

   Geared for use in drills, taps, end mills and reamers, normal cutting edge which provides excellent sharpness and wear.

2. Precision Dies

   Best for punches, stamping dies, and forming tools in high-stress applications.

3. Industrial Blades

   Widely utilized for shear blades and machine knives to cut accurately.

FAQ

• M42 vs Other High Speed Steels

  M42’s cobalt-enhanced makeup also gives it hot hardness and wear resistance superior to many other grades, especially in high-stress conditions.

• Are M42 materials customizable?

  As a manufacturer of raw materials, the main mindset, including the demand for our high-speed steel raw materials, but we also provide semi-finished and finished product customization services according to customer requirements, such as your size and surface requirements, repeatability, high-performance raw materials.

• Has your M42 high speed steel been certified for passing quality?

  M42 HSS are ISO 9001 quality management system certified materials and is closely monitored through each production cycle before it leaves the factory as numerous internal tests are performed to confirm material performance meets industry standards and customer expectations.

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