High-speed steel M42 / W2Mo9Cr4Co8 / SKH59 / 1.3247 Introduction M42 steel (W2Mo9Cr4Co8) is a high speed steel cobalt toughness, mainly used for high wear resistance and toughness precision metal Die, it can also be used for cutting tools and knives cool. High steel hardness up to 70HRC, hot hardness, high temperature hardness, easy grinding. The steel with a cutting tool, you can cut iron-based superalloys, superalloy, titanium and ultra-high strength steel, but somewhat less toughness, quenching temperature should be lower limit. Because of good performance can be grinding, it can be used to manufacture a variety of high-precision complex tools. W2Mo9Cr4VCo8 steel codenamed M42. Is a US brand of super-hard cobalt high speed tool steel, M42 steel vanadium content is not high (1%), high cobalt content (8%), cobalt can cause carbide at quenching more Multi-dissolved in matrix, high utilization of the matrix hardness improved wear resistance. The steel hardness, hot hardness, wear pillar and ground are very good. Heat treatment hardness up to 67 ~ 70HRC, but also take special heat treatment to obtain hardness 67 ~ 68HRC, cutting it (especially intermittent cuts) to improve, improve impact toughness. The steel can be made into a variety of tools, cutting difficult materials with good results, but also because a good grinding performance can be made complex tools lack of Chinese cobalt resources, cobalt high speed steel is expensive, about ordinary high-speed steel 5 ~ 8 times. Chinese-made cobalt high speed steel in quenched and tempered hardness, hot hardness, performance and other aspects of some improvement, close to or reach the level of steel imports. Quenching and tempering hardness ≥67HRC, uniformity ≤ ± 0.5%. Specifications: φ10 ~ 150mm, hot-rolled, forged round, rectangular timber, steel, forgings. According to GB / T 9943-2008 standard or user requirements of production. Super-hard high-speed tool steel is processed to meet the needs of difficult to cut materials, such as heat-resistant alloys, the development on the basis of a comprehensive carbon high vanadium high speed steel and high carbon cobalt high speed steel merit together. Usually when using hardness ≥64HRC. Process performance is better than the steel M2Al steel, hot and cold processing performance better; quenching, tempering steel hardness and M35 same as (66 ± 1) HRC. The steel high abrasion resistance, high pressure resistance sintering. Features High red hot hardness, high wear cutting force, high impact toughness uniform fine grain tool industry: scrapers, hobs, iron knives, drill and so on. Forging industry: forging die. Screws industry: hexagonal, etc. Heading mold, tooth attack, punch. Thermal annealing temperature heat treatment: temperature 800 ~ 880 ℃, to 10 ~ 20 ℃, dHr furnace cooled to about 600 ℃, hardness HB269 above. Preheating temperature: 730-845 ℃ quenching temperature: 1190-1210 ℃ tempering temperature: 540-595 ℃ quench: oil quenching, air cooling or bath quenching refer to the corresponding grades of American Standard Grade AISI M42, Chinese GB Standard Grade W2Mo9Cr4VCo8, Japan Standard Grade JIS SKH59, Hitachi (HITACHI) Standard Grade YXM42, Japan Fujio (NACHI) Standard Grade HSD42, German DIN standard grades S2-10-1-8, German DIN standard material number 1.3247, Austria Bluff (BOHLER) Standard Grade S500. Typical Application Examples 1) suitable for the production of various powerful cutting wear and impact resistance tools. 2) for the production of high-hard and ultra hard blades, drill bits, taps, broaches, hobs and various cutter. 3) for advanced die, screw die as well as more complex shapes required toughness and red top. 4) for cold forging die and drawing die and so on. 5) Recommended Case plant, screws and other cold stamping plant products industries The company specializes in the production of various grades of high-speed steel:. 6542,9341, W18, M2, M35, M42. According to customer development of practical applications of new steel grades. Paul chemical composition, security testing can single contact with the original material production. Electro-slag re-melting, carbide small, wherein the carbide particle size of the United States cold-drawn material testing, to 8.5 microns, far higher than the national standard. Tight Control of low magnification and P, S and other impurities for steel. Implementation of corporate-controlled chemical composition standards up to national standard midline about providing quality assurance, affordable, complete specifications, hot-rolled + cold drawn material + forgings are online production, the chemical composition of insurance, security testing can be a single contact with the original material.