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1.3243, commonly known as AISI M35, is a premium cobalt-alloyed high speed steel engineered for demanding industrial environments. Based on a proven tungsten-molybdenum system, our M35 high speed steel incorporates a five percent cobalt addition to elevate its performance boundaries. This specific composition provides an exceptional balance of wear resistance and toughness, making it a definitive step up from standard grades. Our material maintains an impressive working hardness of up to 66 HRC, ensuring consistent reliability when exposed to intense heat and friction during complex machining operations.
Production Route: | EAF+LF+VD or+ ESR,Forged or Hot Rolled |
Heat Treatment: | Annealed |
Hardness: | ≤ 255HB |
UT Standards: | Sep 1921 Class3 E/e |
Surface Condition: | Black surface or machined |
Size Range: | ||
Flat | Round | |
Thickness: | 2-200mm | Φ2-200mm |
Width: | 100-610mm | |
Chemical Composition | C | Si | Mn | Cr | Mo | V | W | Co |
M35 | 0.80~0.90 | 0.20~0.45 | 0.15~0.40 | 3.75~4.50 | 4.50~5.50 | 1.75~2.20 | 5.50~6.50 | 4.50~5.50 |
1.3243 | 0.87~0.95 | ≤0.45 | ≤0.40 | 3.80~4.50 | 4.70~5.20 | 1.70~2.10 | 5.90~6.70 | 4.50~5.00 |
SKH-55 | 0.87~0.95 | ≤0.45 | ≤0.40 | 3.80~5.50 | 4.50~5.50 | 1.75~2.20 | 5.50~6.75 | 4.50~5.00 |
The unique metallurgical structure of our material delivers significantly higher red hardness and tempering resistance compared to traditional grades like M2. When your operations involve elevated temperatures, our 1.3243 HSS retains its structural integrity and cutting edge without premature degradation. This remarkable thermal stability translates directly to extended tool life and fewer interruptions during high-speed production cycles. Rely on our meticulously processed steel to keep your most critical applications running smoothly under extreme thermal stress.
Balancing extreme durability with necessary toughness is critical for advanced tooling components. Our SKH-55 high speed steel excels in providing superior wear resistance while avoiding the brittleness often associated with ultra-hard materials. Whether you are processing abrasive plastics or high-strength alloys, our material resists surface wear and chipping. This ensures your cutting edges remain sharp and precise over longer periods, significantly reducing the frequency of tool replacements and associated downtime.
We understand that different projects require specific material conditions for optimal processing. You can specify production routes including EAF+LF VD or ESR, delivered in either forged or hot rolled formats. We supply the material in an annealed condition with a hardness of 255HB, making it ready for your subsequent machining steps. Furthermore, you can request delivery with a standard black surface or opt for various machined finishes to suit your immediate manufacturing requirements.
Industrial metalworking relies heavily on materials that can withstand aggressive material removal rates. Our material is specifically designed to excel in the production of heavy-duty cutting tools utilized on high-strength or stainless steels. You will find it perfectly suited for manufacturing high-speed milling cutters, broaches, hobs, and complex taps. The inherent high-temperature performance ensures these intricate tools maintain their precise geometries even when operating at maximum cutting speeds and feeds.
Specialized hole-making operations generate immense localized heat that can quickly destroy inferior tooling. Extensive industry use proves our steel is the ideal candidate for manufacturing special-purpose twist drills and reamers. By enduring high thermal loads without softening, it ensures dimensional accuracy and excellent surface finish in the drilled holes. Your precision drilling instruments will benefit from the enhanced durability, delivering consistent results across numerous production runs.
Beyond traditional cutting, the robust nature of this steel extends its utility into severe forming applications. It is an excellent choice for high-stress punches, ejector pins, and cold extrusion dies where surface durability is absolutely paramount. Additionally, it serves as a premium mould steel insert for processing highly abrasive plastics. Incorporating this material into your demanding wear-parts and industrial blades guarantees extended operational life in harsh environments.
Securing a stable supply chain requires a partner with significant production capabilities and infrastructure. We manage a comprehensive 1.6 million square meter forging facility equipped with advanced 40-ton EBT furnaces and multiple ESR units. This integrated industrial chain allows us to maintain strict oversight on both product quality and processing costs. By controlling the entire metallurgical process, we confidently deliver premium materials that meet your exact specifications on time.
Navigating urgent project deadlines demands rapid access to critical raw materials without unnecessary delays. We maintain a robust inventory of over three thousand tons of regular stock, encompassing a wide variety of tool and mold steels. This extensive ready stock allows us to process and dispatch your orders with remarkable speed. Relying on our comprehensive warehousing solutions ensures your production lines remain active and fully supplied.
Consistent material performance begins with uncompromising inspection protocols before any product leaves our facility. Operating an independent laboratory, our engineering team conducts rigorous chemical analysis, microstructure evaluation, and ultrasonic testing. We strictly adhere to the Sep 1921 Class 3 E/e standards to guarantee internal soundness. This dedication to exhaustive quality assurance means you receive reliable steel perfectly suited for your most critical manufacturing applications.
We supply materials produced according to widely recognized international specifications including DIN, ASTM, AISI, EN, ISO, and JIS to ensure seamless integration into your current projects.
Yes, our machining factory allows us to deliver materials with a black surface or precision machined finishes such as turned, milled, peeled, or grinded according to your exact needs.
A standard minimum order is approximately 25 tons to fill one container, but we offer the flexibility to mix different types of steel grades to successfully reach this volume.
We are happy to provide free material samples so you can evaluate our quality firsthand, with the associated express shipping expenses simply covered by the receiving party.
