Chemical Composition Ranges
| Steel Grade | Carbon (C) | Silicon (Si) | Manganese (Mn) | Chromium (Cr) | Tungsten (W) | Molybdenum (Mo) | Vanadium (V) | Cobalt (Co) |
| M2 | 0.78% – 0.88% | 0.20% – 0.45% | 0.15% – 0.40% | 3.75% – 4.50% | 5.5% – 6.5% | 4.5% – 5.5% | 1.75% – 2.75% | – |
| M35 | 0.82% – 0.95% | 0.20% – 0.45% | 0.15% – 0.40% | 3.80% – 4.50% | 5.50% – 6.50% | 4.75% – 5.25% | 1.75% – 2.15% | 4.60% – 5.00% |
| M42 | 1.05% – 1.15% | 0.15% – 0.65% | 0.15% – 0.40% | 3.50% – 4.25% | 1.15% – 1.85% | 9.00% – 10.00% | 0.95% – 1.35% | 7.75% – 8.75% |
Applications
- M2 High – Speed Steel
- Tool Manufacturing: It is commonly used in the manufacture of various tools such as milling cutters, drills, planers, lathe tools, and gear shapers. It can be used to machine a variety of materials including steel, cast iron, stainless steel, copper, and aluminum.
- Mold Manufacturing: Suitable for manufacturing cold – working molds that require a good combination of wear resistance and toughness.
- Machining Industry: Widely applied in the machining fields of industries such as automotive manufacturing, aerospace, and electronics. For example, in the processing of automotive engine parts, aerospace engine components, and electronic components.
- M35 High – Speed Steel
- Cutting Tools: Mainly used to manufacture high – precision and high – performance cutting tools such as hobs, broaches, end mills, gear cutting tools, and drills. It can meet the requirements of high – speed cutting and processing of hard materials.
- Mold Manufacturing: Can be used to make cold – forging molds, cold – heading dies, cold – extrusion dies, and other cold – working molds. In the cold – forging process, it can withstand high pressure and wear, extending the service life of the molds.
- Hot Processing and Stamping: Due to its stability at high temperatures and good wear resistance, it is also suitable for some hot – processing and stamping processes.
- M42 High – Speed Steel
- Processing of Difficult – to – Machine Materials: Mainly used for processing high – strength steels, pre – hardened steels, high – hardness alloys, and difficult – to – machine non – ferrous metal alloys. For example, it is used to make tools such as broaches, gear cutting tools, milling cutters, drills, and taps for processing such materials.
- High – Precision Machining: Suitable for applications where high machining precision and surface quality are required. The tools made of this steel can maintain sharpness and hardness in heavy – load and high – output cutting applications, thus ensuring machining accuracy and efficiency.
