M2 High-Speed Tool Steel / DIN 1.3343 / JIS SKH51
M2 belongs to the tungsten-molybdenum series of general-purpose high-speed steels. It is forged through precise alloying ratios and rigorous smelting processes, with high proportions of tungsten (W), molybdenum (Mo), chromium (Cr), and vanadium (V) as its core elements. This unique alloy composition endows it with capabilities surpassing ordinary steels, making it the premier choice for manufacturing precision, high-efficiency, wear-resistant cutting tools (such as drill bits, milling cutters, taps, and saw blades) and critical wear-resistant components.
Product Description
Xiri Tool Steel is a leading supplier of AISI M2 tool steel (DIN 1.3343) in China. M2 is the most widely used general-purpose tungsten-molybdenum alloy high-speed steel. It features high hardness, excellent wear resistance, outstanding red hardness and moderate toughness, and is suitable for manufacturing various cutting tools and cold working molds.
Whether you need M2 flat bars, 1.3343 steel plates, or forged rounds, we provide custom dimensions with machining or grinding services. Our materials are strictly tested to ensure premium metallurgical structure.
M2 belongs to the tungsten-molybdenum series of general-purpose high-speed steels. It is forged through precise alloying ratios and rigorous smelting processes, with high proportions of tungsten (W), molybdenum (Mo), chromium (Cr), and vanadium (V) as its core elements. This unique alloy composition endows it with capabilities surpassing ordinary steels, making it the premier choice for manufacturing precision, high-efficiency, wear-resistant cutting tools (such as drill bits, milling cutters, taps, and saw blades) and critical wear-resistant components.
Equivalent Grades of M2 Steel
| USA AISI |
Germany DIN |
Japan JIS |
ISO | China GB |
Russia GOST |
England BS |
| M2 | 1.3343 | SKH51 | HS6-5-2 | W6Mo5Cr4V2 | P6M5 | BM2 |
Chemical Composition of DIN 1.3343 / AISI M2 high speed tool steel
| C | Si | Mn | Cr | P | S | Mo | V | W |
| 0.78-1.05 | 0.20-0.45 | 0.15-0.40 | 3.75-4.50 | max 0.030 | max 0.030 | 4.50-5.50 | 1.75-2.20 | 5.50-6.75 |
Supply Form & Size Range of 1.3343 / AISI M2 tool steel
We supply 1.3343 / M2 steel in various forms to meet your manufacturing needs:
Round bar: Diameter 16mm – 200mm
Steel Plate / Flat: Thickness 30mm – 200mm x Width 200mm – 400mm
Surface: Black, Peeled, Rough machined or Grinded.
Delivery Condition: Annealed (Hardness 248 HB max.)
Exceptional Performance of M2 Tool Steel | Forged for Extraordinary Results
Ultimate Hardness and Wear Resistance: Following appropriate heat treatment, M2 readily achieves a hardness exceeding HRC 63. This enables it to withstand the intense friction and abrasion inherent in cutting operations, significantly extending tool life. Consequently, downtime for tool changes is minimised, substantially boosting production efficiency.
Superior Red Hardness (Thermal Stability): This defines the essence of high-speed steel. Even in cutting environments exceeding 600°C, M2 maintains high hardness and sharpness without rapid softening or failure due to friction-induced heat. This makes it an ideal tool for high-speed cutting, dry cutting, or machining difficult materials such as stainless steel and high-temperature alloys, ensuring stable processing and excellent surface finish.
Superior balance of strength and toughness: While pursuing high hardness, M2 maintains excellent resistance to impact and deformation through optimised composition and heat treatment processes. This prevents tool chipping or fracture during interrupted cutting and heavy-load conditions, enhancing reliability.
Good machinability and grindability: Enables the manufacture of intricate, precision tool geometries, ensuring high accuracy and consistency in finished tools.
M2 High-Speed Tool Steel Applications | Driving Core Industries
The value of M2 high-speed tool steel lies in its role as a driving force across critical segments of modern manufacturing:
Precision Metalworking: Serves as the core tool material for CNC turning, milling, drilling, tapping, gear cutting, and other processes essential to producing automotive components, aerospace precision parts, and precision moulds.
Mould manufacturing: Utilised in critical components for cold-working dies (e.g., punches, dies) and certain warm-working dies demanding high wear resistance and precision.
Woodworking tools: High-performance planes, milling cutters, and drill bits enhance machining efficiency and surface finish quality.
Medical device manufacturing: Employed to produce high-precision, wear-resistant machining tools for medical instruments.
General Industrial Cutting Tools: Saw blades, cutting blades, gear hobbing cutters, etc., covering routine industrial machining needs.
Our advantages in Processing M2 High-Speed Tool Steel
Fully aware of your stringent demands for tool stability and longevity, we implement comprehensive quality control from raw materials to finished products:
Pure Raw Materials: Strictly select high-purity, precisely graded imported and domestic premium raw materials to eliminate impurity effects on performance.
Vacuum Melting/Electroslag Remelting: A core process. Advanced metallurgical techniques maximally remove gases and harmful inclusions, ensuring material purity, homogeneity, and density – the foundation of high performance.
Precision Forging/Rolling: Through precisely controlled deformation processes, we optimise carbide distribution, refine grain structure, and enhance material strength, toughness, and isotropy.
Precision Heat Treatment: The very soul of the process. Strictly controlled quenching (ultra-high-temperature austenitisation) and multiple high-temperature tempering cycles precisely induce secondary hardening effects, achieving an optimal balance of red hardness, hardness, toughness, and dimensional stability. Each batch undergoes rigorous process validation.
Comprehensive Inspection: Finished products undergo 100% hardness testing and non-destructive ultrasonic flaw detection. Sampling includes metallographic analysis, chemical composition spectroscopy, and critical dimensional accuracy checks, ensuring every item meets the highest standards.
Not sure about the best equivalent for your application?
Why Manufacturers Choose Huangshi Xiri
Huangshi Xiri combines international-standard steel grades, a complete tool steel portfolio, strict quality control and reliable global supply. We match DIN / JIS / AISI equivalents precisely, offer cutting and heat-treatment services, and control every step from smelting to inspection. With stable capacity, on-time delivery and responsive technical support, we help manufacturers reduce risk, save costs and run production with confidence.
Contact Us
Contact Huangshi Xiri today for quotations, grade selection and technical support on tool steel, mold steel and alloy steel. Whether you need samples, cutting-to-size service or long-term supply for your projects, our engineers and sales team are ready to respond quickly with professional advice and reliable solutions for your manufacturing needs.
