About M42 High Speed Steel Round Bars
The products like round bars, square bars, forged bars, flat bars are enormously manufactured by IMI Alloys India LLP. M42 high speed steel is one of such products with all the best attributes and is sold profitably. Our latest manufacturing bars and unique specifications offer great working criteria for the client’s critical applications. Our team cross-checks our variations of M42 High Speed Steel Round Bars with the help of testing, and they have lots of demands as we offer the unique range and properties. The alloys and materials used for manufacturing these bars offer great advantages.
We implement real-time products that have trending features that are useful for offering the best outcomes. Our products offer great results with reliable work. Stainless Steel is the type of alloy compatible with all machine grades and can fit well to any destructive external factors. Chlorides and halides do not affect their working. They have a chemical composition that offers a protective layer against erosion. Our bars have thermal properties, and we offer excellent oxidation resistance that is ideal for a wide range of adverse climates or surrounded applications.

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M42 High Speed Steel Round Bars
M42 High Speed Steel Round Bars have top-level strength properties and exceptional resistance to normal and general corrosion. We make sure that our clients will get all sorts of specifications related to corrosion for the corrosion resistance properties. The furnishing and finishing surfaces offered by us normally came from the tempted grades, so about this function, we guarantee you that our round bars will work for the long term. For the quality and functionality, we verify our M42 High Speed Steel Round Bars to check if they meet the standard quality and fulfill the expectations or not. After finalizing all these things, we go to the next step.

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The materials used for manufacturing such round bars are supreme quality, making the product deal with caustic acids and their compounds perfectly. The dimensions of these bars are perfectly done. Standards of ASTM are applied during their production. The external finish that they have is due to processes like hot rolling, polishing, embossing etc. machinability is strongly evident in them.

How is the High speed steel M42 round bar manufacturing process conducted?

High-speed steel M42 round bars manufacturing process involves a number of steps. Iron, tungsten, molybdenum, cobalt, and other alloying elements are among the raw materials that are melted in the first step. After melting, the alloy is poured into a mould to form a billet. The billet is heated after which a round bar shape is formed by rolling. To obtain the desired hardness and toughness, it is then heat treated. Annealing, quenching, and tempering are frequently used in the heat treatment process. M42 round bars are heat-treated, quality-checked, and then cut to the desired length. They are then packaged and delivered to the customer.

What are the uses of m42 hss steel round bars?

M42 HSS steel round bars have high wear resistance, toughness, and compressive strength due to their high cobalt and molybdenum content. They are known for their outstanding red hardness, allowing them to maintain their cutting edge at high temperatures. They are also highly resistant to abrasion and thermal fatigue. They are generally used in high-performance cutting tools, such as twist drills, reamers, taps, milling cutters, and broaches, as well as in cold-work tools, such as dies and punches. M42 high-speed steel round bars can also be used in the aerospace, medical, and automotive industries for precision cutting and shaping of parts and components. They are also suitable for use in the woodworking industry for cutting knives and saw blades. They are often used in drilling, boring and milling in heavy and high-tensile alloys and high-hardness materials.

Round Bar

Specifications of High Speed Steel M42 Round Bars

  • Standard : ASTM A600, ASME SA600
  • Dimensions : EN, DIN, JIS, ASTM, BS, ASME, AISI
  • Form : Round
  • Diameter : 2mm to 100mm depending on grades
  • Length : 100 mm to 10,000 mm
  • Surface Condition : Black, Grinded, Turned Bright, Machined Proof
  • Application : Lathe Tools, Milling Cutter, Cutter Blades, Boring Tools, Twist drills, Milling Knives, Reamers, Taps, Metalcutting saws, Screw Cutting Tools, File Cutter’s Chissels, Drills, Hobs, Drill Bits, Tread cutting tools etc

Equivalent Grades of High Speed Steel M42 Round Bars

Country USA German Japan
Standard ASTM A600 DIN EN ISO 4957 JIS G4403
Grades M42 1.3247/HS2-9-1-8 SKH59

Chemical Composition of M42 High Speed Steel Round Bar

ASTM A600 C Mn P S Si Cr V Mo W Co
M42 1.05 1.15 0.15 0.40 0.03 0.03 0.15 0.65 3.50 4.25 0.95 1.35 9.00 10.00 1.15 1.85 7.75 8.75
DIN ISO 4957 C Mn P S Si Cr V Mo W Co
1.3247/HS2-9-1-8 1.05 1.15 0.70 3.50 4.50 0.90 1.30 9.00 10.00 1.20 1.90 7.50 8.50
JIS G4403 C Mn P S Si Cr V Mo W Co
SKH59 1.05 1.15 0.40 0.03 0.03 0.70 3.50 4.50 0.90 1.30 9.00 10.00 1.20 1.90 7.50 8.50

Mechanical Properties of High Speed Steel M42 Round Bars

Properties Unit TEMPERATURE °C / °F
20 / 70 400 / 750 600 / 1110
DENSITY Kg/m³ lbs/in³ 8.03 .290 7.93 .286 7.87 .284
MODULUS OF ELASTICITY kN/mm³² psi 225 33 · 10 6 200 29 · 10 6 180 26 · 10 6


per °C per °F 11.5 · 10-6 6.4 · 10-6 11.8 · 10-6 6.6 · 10-6
THERMAL CONDUCTIVITY W/m °C Btu/sq. ft. h °F/in. 24 166 28 194 27 187
SPECIFIC HEAT J/kg °C Btu/lb °F 420 0.10 510 0.12 600 0.14
Mechanical Properties Metric Imperial
Hardness, Rockwell C (oil quenched from 1204°C, 5 minutes) 64.3 64.3
Hardness, Rockwell C (oil quenched from 1177°C, 5 minutes) 65.5 65.5
Hardness, Rockwell C(oil quenched from 1163°C) 65.8 65.8
Izod impact unnotched (oil quenched at 1191°C; 510°C temper temperature) 13.6 J 10.0 ft- lb
Izod impact unnotched (oil quenched at 1191°C; 622°C temper temperature) 24.4 J 24.4 J
Machinability (1% carbon steel) 35.0 – 40.0% 35.0 – 40.0%
Poisson’s ratio 0.27-0.30 0.27-0.30
Elastic modulus 190-210 GPa 27557-30457 ksi

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Applications For High Speed Steel M42 Round Bars

Generally, high speed steels are used for machining at high speeds. HSS M42 steel materials are widely used for:

  • Broaches
  • Drills
  • Hobs
  • Knurling Tools
  • Lathe Tools
  • Milling Cutters
  • Nut Piercers
  • Planer Tools
  • Reamers
  • Shaving Tools
  • Taps
  • Thread Cutting Tools

Export Destinations for High Speed Steel M42 Round Bars


Philippines, Indonesia, Denmark, Bangladesh, Nigeria, Taiwan, Nigeria, Iraq, United Arab Emirates, South Africa, Nepal, Libya, Ecuador, New Zealand, Hungary, Mongolia, Norway, Greece, Gambia, Poland, Finland, Ireland, Hong Kong, Chile, Argentina, Switzerland, Spain, Peru, Belgium, Gabon, Algeria, Bhutan, Austria, Canada, Romania, Pakistan, Saudi Arabia, Serbia, Lithuania, Jordan, Iran, Estonia, Sri Lanka, Australia, Malaysia, Egypt, China, Namibia, Colombia, Bahrain, Mexico, Germany, Afghanistan, Puerto Rico, Netherlands, Turkey, Bolivia, Oman, Kuwait, Tibet, Zimbabwe, United Kingdom, Vietnam, Costa Rica, Mexico, South Korea, India, Lebanon, Iran, Japan, Portugal, United States, Ghana, Bulgaria, Yemen, Thailand, Croatia, Brazil, Macau, Morocco, Belarus, Poland, Angola, Ukraine, Slovakia, Russia, Israel, Sweden, Chile, Kenya, Kazakhstan, Italy, France, Trinidad & Tobago, Czech Republic, Azerbaijan, Qatar, Singapore, Tunisia, Venezuela.


Chandigarh, Manama, Noida, Karachi, Secunderabad, Thiruvananthapuram, Busan, Los Angeles, Geoje-si, Brisbane, Dallas, Mexico City, Sharjah, Lagos, Ahmedabad, Visakhapatnam, Mumbai, Singapore, Hanoi, Baroda, Milan, Madrid, Santiago, Pimpri-Chinchwad, Gimhae-si, Al Khobar, Dammam, Kolkata, Atyrau, Haryana, Ankara, Ernakulam, Ranchi, Calgary, Tehran, London, Kuwait City, Surat, Vung Tau, Perth, Kuala Lumpur, Bangkok, Sydney, Aberdeen, Hyderabad, Doha, New York, Petaling Jaya, Moscow, Faridabad, Bogota, Jakarta, Muscat, Thane, Pune, Navi Mumbai, Ulsan, Port-of-Spain, Riyadh, Dubai, Jeddah, Indore, Kanpur, Ahvaz, Howrah, Hong Kong, Jaipur, Seoul, Bengaluru, Nagpur, Houston, La Victoria, Coimbatore, Al Jubail, Melbourne, New Delhi, Ho Chi Minh City, Rio de Janeiro, Colombo, Gurgaon, Chennai, Granada, Abu Dhabi, Caracas, Nashik, Jamshedpur, Bhopal, Edmonton, Cairo, Montreal, Ludhiana, Istanbul, Rajkot, Chiyoda, Toronto, Vadodara, Courbevoie, Algiers.

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IMI ALLOYS INDIA LLP is a notable manufacturer, supplier, stockist, and exporter of bars – round bars, square bars, flat bars, etc. in various materials like Tool Steel, Alloy Steel, and High-Speed Steel in Mumbai, India. We are authorized dealers of Graphite India Limited (POWMEX STEELS DIVISION) and also the only authenticated stockist of Nachi Fujikoshi Corp in India for their High-Speed Steel, Powder Metallurgy, Tool Steel, and Alloy Steel Products.
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