Leading Supplier of M42 Steel (High Speed Steel) in Delhi & Across India

Certified M42 Steel in Delhi – High Red Hardness, Wear Resistance, Toughness & Cut-to-Size | Trusted M42 Steel Supplier in India

At Jupiter Steels, we supply certified M42 steel (high speed steel) in bulk and cut-to-size, with Pan India delivery across Delhi, Mumbai, Pune, Chennai, Hyderabad, Bangalore, Ahmedabad, Kolkata and more—your trusted M42 steel supplier in India.


M42 Steel Supplier in India | High-Performance Cobalt High-Speed Steel

M42 steel is a premium, high-cobalt, high-molybdenum high-speed steel known for its exceptional hot hardness, toughness, and superior wear resistance. This grade is specifically engineered to perform at elevated temperatures, making it a top choice for demanding cutting applications where other high-speed steels would fail. Its high cobalt content gives it a distinct advantage in maintaining its hardness and cutting ability even when red hot. At Jupiter Steels, based in Delhi, we are a trusted stockist and supplier of M42 steel, providing certified material to customers throughout India, including key industrial regions like Manesar, Haryana, and beyond.


The outstanding performance of M42 steel is a direct result of its carefully controlled chemical composition. The key alloying elements and their typical weight percentages are:

  • Carbon (C): 1.05 – 1.15%
  • Tungsten (W): 1.15 – 1.85%
  • Chromium (Cr): 3.50 – 4.25%
  • Vanadium (V): 0.90 – 1.25%
  • Molybdenum (Mo): 9.00 – 10.00%
  • Cobalt (Co): 8.00 – 9.00%

  • Cobalt (Co): The high cobalt content is the defining feature of M42 steel. Cobalt significantly increases the steel’s hot hardness, allowing it to maintain a sharp edge and cut effectively even at high operating temperatures.
  • Molybdenum (Mo) & Tungsten (W): This combination forms hard carbides that contribute to the steel’s excellent wear resistance and hardenability.
  • Vanadium (V): Vanadium forms extremely hard carbides, which further enhance the steel’s resistance to abrasive wear.

After heat treatment, M42 steel can achieve a very high working hardness, typically in the range of 65-68 HRC, which is critical for its performance in cutting applications.

  • High Hot Hardness: This is its most well-known property. It retains its hardness and cutting edge even at elevated temperatures caused by high-speed friction.
  • Exceptional Wear Resistance: The high volume of carbides makes it highly resistant to abrasive wear, extending the life of tools.
  • Good Toughness: Despite its high hardness, it provides a good balance of toughness, which helps to prevent chipping and fracturing.

M42 high-speed steel is extensively used for cutting tools that operate at high speeds and temperatures. Key applications include:

  • Drill Bits and Taps
  • Milling Cutters and End Mills
  • Broaching Tools
  • Saw Blades
  • Forming Dies where high wear resistance is required

As a premier steel stockist in India, Jupiter Steels is your reliable partner. We are committed to providing you with top-notch materials and service.

  • Certified Quality: We supply high-quality, genuine M42 steel that meets international standards. Our reputation for excellence is a promise to our customers.
  • Nationwide Supply Chain: While based in Delhi, our robust logistics network allows us to provide high-quality steel to customers across India, including Haryana, Manesar, Rajasthan, and other industrial areas.
  • Expert Guidance: Our team has extensive knowledge of different steel grades. We don’t just sell steel; we provide expert advice to help you select the right material for your specific application.

Q1: What is M42 steel used for?

A: M42 steel is primarily used for high-performance cutting tools that operate at high speeds and cut difficult-to-machine materials.

Q2: What is the main benefit of using M42 steel?

A: The main benefit is its exceptional hot hardness and high wear resistance, which allows it to maintain its cutting ability at elevated temperatures.

Q3: Is M42 suitable for cold work applications?

A: While it can be used for some cold work applications, M42 is optimized for high-speed cutting. Other tool steels are often better suited and more cost-effective for pure cold work.


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