I. Chemical Composition and CharacteristicsKey Properties and Application Areas: As a counterpart to Uddeholm's Vanadis® 4 Extra SuperClean powder metallurgy steel, our company has developed corresponding grades for different melting processes: powder metallurgy grade TPMB44, electroslag remelted (ESR) grade TGC99, and spray-formed grade TSFX44. These materials offer an exceptional combination of high impact toughness and excellent wear resistance. They are suitable for fine blanking, powder compaction tooling, processing of high-strength low-alloy (HSLA) steels and advanced high-strength steels (AHSS), as well as applications requiring a balance of strength, wear resistance, and toughness. Compared to powder metallurgy steels, TSFX44 offers lower cost and superior wear resistance; compared to ESR steels, it provides higher toughness and better wear resistance.II. Microstructure (Cross-Section Comparison)In large-section blocks of TSFX44, the utectic carbides are uniformly distributed, rated at Class 0, reaching the level of powder metallurgy steels. Coarse carbides are finely and dispersedly distributed, with slightly larger sizes than those in powder metallurgy steels, contributing to higher wear resistance. Compared to ESR steels, TSFX44 exhibits a more uniform microstructure, lower brittleness, and reduced risk of mold cracking, offering higher toughness. It is therefore more suitable for applications requiring relatively high toughness and high wear resistance.III. Impact Toughness (J)IV. Mechanical Property ComparisonV. Wear Resistance TestTests were conducted under identical parameters: using boron nitride (hardness 80–90 HRC) as the abrasive medium, with a test force of 100 N, rotational speed of 100 rpm, duration of 30 minutes, and without heating. TSFX44 demonstrated an 18% improvement in wear resistance over the powder metallurgy grade and a 28% improvement over the ESR grade.VI. Conclusions1. In terms of microstructure, mechanical properties, impact toughness, and wear resistance, compared to conventional ESR steels, TSFX44 exhibits a more uniform microstructure, lower risk of quench cracking, finer and better-shaped carbides, lower brittleness, and higher wear resistance. It is better suited for applications demanding high strength, high toughness, and high wear resistance.2. Compared to powder metallurgy steels, TSFX44 offers higher wear resistance and lower cost, though its toughness and strength are slightly inferior. It is therefore ideal for cost-effective applications that prioritize high wear resistance and do not require the highest levels of strength and toughness....

I. BPMT Series Shoulder Milling InsertsII. Application Scenarios of Indexable Corn-Cob Milling CuttersIII. Application ExampleIV. Turning Products: Grade TH8110; Milling Products: Grade MH8220V. Application Example    VI. Exchangeable-Head End Mills...

I. Product Overview and Market Positioning of H11S1、Market positioning: Economical, easily machinable improved H11 hot-work die steel.Designed as a replacement for conventional H11, targeting cost reduction in mass production of mold components. It is aimed at customers producing small-part zinc-alloy die-casting molds (e.g., zipper heads) and injection mold lifters/sliders.2、 Cutting performance optimization: Enhancing material applicability by leveraging strengths and mitigating weaknesses.Conventional H11 from the mill typically has S ≤ 0.02%. By increasing sulfur content to 0.07–0.12%, an improved free-cutting H11 is obtained. The formation of MnS sulfides improves machinability, though at the cost of reduced toughness and thermal fatigue resistance. However, the working conditions of zipper molds, small zinc die-casting parts, and injection mold lifters/sliders happen to avoid the disadvantages of high sulfur content while maximizing its free-cutting advantages.3、 Core value: Retaining substrate performance while achieving modified efficiency gains.Preserves the traditional H11 matrix advantages: heat resistance, nitridability, minimal heat-treatment distortion, and good wear resistance. With the addition of 0.07–0.12% sulfur to form MnS inclusions, the material offers improved machinability, higher finishing efficiency, lower tool wear, and reduced processing costs.II. Chemical Composition and Technical Characteristics of H11SConventional 1.2343 from the mill typically has S ≤ 0.01%. By increasing sulfur content to 0.07–0.12%, an improved free-cutting H11 is obtained. The formation of MnS sulfides improves machinability, though at the cost of reduced toughness and thermal fatigue resistance. However, the working conditions of zipper molds (zinc-alloy die-casting) and injection mold lifters/sliders happen to avoid the disadvantages of high sulfur content while maximizing its free-cutting advantages.III. Primary Application 1 of Sulfur-Containing Free-Cutting Die Steel H11S: Zipper Molds and Small-Part Zinc-Alloy Die-Casting MoldsReasons for suitability:Complex and fine cavity details in zipper molds — free-cutting advantage is maximized.Zipper molds are densely populated with fine tooth grooves and small inserts, requiring extensive milling, engraving, and small-hole machining. MnS improves chip breaking, reduces tool sticking, and lowers tool wear. For large-volume mold opening, the processing cost is significantly lower than that of conventional low-sulfur H11.Low forming temperature of zipper molds — no severe thermal shock.Plastic/TPU zipper molding temperatures are ≤ 220°C, with minimal thermal cycling, thus avoiding the thermal cracking drawback associated with high sulfur content. The substrate wear resistance and nitridability meet mass production requirements.Low zinc melt temperature (390–430°C), and zinc products are mostly zipper heads and small clasps with relatively small core dimensions — no high-toughness matrix required.The substrate offers wear resistance and anti-soldering properties, while the higher sulfur content optimizes machinability, achieving cost reduction in mass die-casting production.IV. Primary Application 2 of Sulfur-Containing Free-Cutting Die Steel H11S: Injection Mold Lifters and SlidersReasons for suitability:Machining advantages.Lifters and sliders are non-standard small components with complex shapes, mating slots, clearance holes, and angled holes, requiring extensive machining, wire EDM, and finishing operations. With S = 0.07–0.12%, the material offers excellent free-cutting properties, enabling smooth turning, milling, and drilling operations, faster delivery, and lower processing costs — ideal for batch production.Service condition compatibility.Injection molding temperatures are mild without high thermal shock. The components are subjected only to reciprocating friction, without heavy impact loads, thus avoiding the toughness drawback of high sulfur content. The substrate exhibits minimal heat-treatment distortion and can be nitrided for wear resistance, meeting precision assembly and wear-resistance requirements.V. Cleanliness Level of Sulfur-Containing Free-Cutting Die Steel H11SSulfide inclusion morphology is improved during the melting of sulfur-containing steel through VD (vacuum degassing) plus calcium wire feeding (calcium treatment). This modifies and refines MnS sulfide inclusions, effectively reducing the formation of elongated sulfide inclusions.VI. Quenching and Tempering Hardness Curve of H11SRecommended heat treatment process for customers: quenching at 1000–1020°C, tempering at 590–610°C, to achieve a hardness of 44–46 HRC....

I. Production Route – Spray-Formed SteelII. Chemical CompositionIII. CharacteristicsD7 die steel is a high-carbon, high-chromium, high-vanadium air-hardening cold-work tool steel.High wear resistance: Contains substantial amounts of carbon and vanadium, forming vanadium carbides that provide extremely high wear resistance.Ultra-high hardness: Can reach hardness levels of 58–65 HRC.Excellent dimensional stability: As an air-hardening steel, D7 does not require oil or water quenching during heat treatment, thereby avoiding deformation issues caused by rapid cooling and ensuring excellent dimensional stability.IV. ApplicationsForming and stamping dies: Used in the manufacture of briquetting dies, deep-drawing dies, cold extrusion dies, blanking dies, and various punches.Wear-resistant equipment liners: Used as brick mold liners and shot-blasting equipment liners to withstand continuous erosion by hard particles.Ceramic and powder metallurgy tools: Suitable for ceramic extrusion tooling, powder compaction tooling, and meat chopper plates, etc.Precision cutting tools and measuring instruments: Used in the manufacture of slitting cutters, broaches, polishing tools, machine tool guideways, and various high-precision gauges.V. Eutectic Carbide Non-UniformityVI. Cleanliness...

I. Chemical Composition of W1Mo8Cr4VCo3 High-Speed SteelW1Mo8Cr4VCo3 exhibits good toughness, strong chipping resistance, and excellent impact resistance. With 3% cobalt content, it also demonstrates superior red hardness and high-temperature wear resistance.II. Metallographic StructureGrain size and tempered structure of W1Mo8Cr4VCo3: using quenching at 1190°C + tempering at 560°C for 2 hours, 3 times.III. Quenching Temperature – Hardness CurveThe hardness values and corresponding curves for W1Mo8Cr4VCo3 after heat treatment (560°C × 2 h × 3 times) are as follows:IV. Wear Resistance TestTest plan: Comparative testing of M35 and W1Mo8Cr4VCo3 using boron nitride as the friction medium. Wear resistance test parameters were compared between the two materials.Heat treatment process for W1Mo8Cr4VCo3: Quenching at 1170°C and 1190°C respectively, followed by tempering at 560°C for 2 hours, 3 times....

I. Chemical Composition of M7 High-Speed SteelII. Properties and ApplicationsAfter heat treatment, M7 steel attains extremely high hardness, enabling it to effectively resist wear during machining and significantly extend tool service life.Applications: Used in various high-load, high-precision machining scenarios.III. Metallographic StructureM7 high-speed steel: coarse carbide particle size and eutectic carbide non-uniformity Grain size and tempered structure of M7: using quenching at 1190°C + tempering at 560°C for 2 hours, 3 timesIV. Quenching Temperature – Hardness CurveThe hardness values and corresponding curves for M7 after heat treatment (560°C × 2 h × 3 times) are as follows:V. Wear Resistance TestTest plan: Comparative testing of M2 and M7 using white corundum as the friction medium on a friction tester.Heat treatment process: M7 specimens of different specifications were quenched at 1160°C, 1170°C, and 1190°C respectively, followed by tempering at 560°C for 2 hours, 3 times.VI. Cutting Tool Test (Actual Case) – 6542 vs. M7Basic test conditions:Product name: ground drillComparison materials: 6542 / M7Workpiece material: 40Cr, hardness 28–30 HRCClamping method: rigid chuckCooling method: full-synthetic cutting fluidMachine model: VCM650Cutting method: blind holeVII. Test ConclusionsThrough cutting tool testing on M7 ground drills, the recommended heat treatment process is 1190°C quenching + 560°C tempering for 2 hours, 3 times. Under this temperature combination, the material exhibits optimal performance and can surpass the performance of M2 (6542) steel....

I. Chemical Composition of M10 High-Speed SteelII. Properties and ApplicationsM10 is a molybdenum-series high-speed steel characterized by fine carbides, good toughness, excellent wear resistance, and favorable red hardness. After quenching and tempering, its hardness reaches ≥ 64 HRC.Applications: drills, milling cutters, broaches, gear cutters, stamping dies, etc. It is suitable for machining difficult-to-cut materials such as stainless steel and heat-resistant steels.III. Metallographic StructureM10 high-speed steel: coarse carbide particle size and eutectic carbide non-uniformity Grain size and tempered structure of M10: using quenching at 1195°C + tempering at 560°C for 2 hours, 3 timesIV. Quenching Temperature – Hardness CurveThe hardness values and corresponding curves for M10 after heat treatment (560°C × 2 h × 3 times) are as follows:V. Wear Resistance TestTest plan: Comparative testing of M2 and M10 using white corundum as the friction medium on a friction tester.Heat treatment process: M10 specimens of different specifications were quenched at 1185°C and 1195°C respectively, followed by tempering at 560°C for 2 hours, 3 times.VI. Cutting Tool Test (Actual Case) – 6542 vs. M10Basic test conditions:Product name: ground drillComparison materials: 6542 / M10Workpiece material: 40Cr, hardness 28–30 HRCClamping method: rigid chuckCooling method: full-synthetic cutting fluidMachine model: VCM650Cutting method: blind hole1. Test data for φ7.0 drill2. Test data for φ8.0 drill3. Test data for φ10.0 drill4. Test data for φ12.7 drillWear images:M10 wear imagesM2(6542) wear imagesVII. Test ConclusionsM10 ground drills were quenched at 1185°C and 1195°C respectively, and uniformly tempered at 560°C for 2 hours, 3 times. Metallographic examination and cutting performance tests were then conducted.Recommended heat treatment process: quenching at 1195°C + tempering at 560°C for 2 hours, 3 times.Under this process, M10 exhibits the best combination of mechanical properties and wear/cutting performance, and its overall performance is superior to that of M2 (6542) high-speed steel....