Aobo Steel supply DIN 1.2379 steel for your project
Premium DIN 1.2379 Tool Steel Supplier for Unmatched Durability
1.2379 steel, also called X155CrVMo12-1, is a tough German cold-work steel known for its excellent qualities. It has evenly distributed carbides made using vacuum degassing, forging, and rolling. This high-carbon, high-chromium tool steel also contains molybdenum and vanadium for added strength.
The steel’s hardness typically falls between 56 and 60 HRC, and it can be nitrided without losing hardness or wear resistance. Different heat treatments can result in the same hardness of 58 to 62 HRC but with varying levels of toughness and wear resistance. Cryogenic treatment is not recommended for complex molds due to the risk of cracking, but it can improve dimensional stability.
Most cost-effective, high-quality supplier of D2 steel
We offer both D2 electric furnace steel and D2 ESR steel. Considering our customers’ purchasing costs, we produce D2 round bars with diameters under 200mm using the electric furnace method, which can meet Ultrasonic testing (UT) Sep 1921-84 D/d flaw detection. Customers can purchase high-standard D2 round bars at a lower cost. We adopt the ESR process for diameters above 200mm to ensure that the internal structure can meet Ultrasonic testing (UT) Sep 1921-84 E/e flaw detection.
Excellent D2 Forged Steel Supplier
Aobo Steel has over 20 years of experience in forging D2 steel, giving us a deep practical understanding of quality control in this field. Our D2 forged steel products mainly come in round bar, plate, and block shapes. We have over 40 suppliers providing the best processing services, enabling us to offer advantages such as short lead times, stable quality, and competitive prices.
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Suply Range
The shapes of steel that Aobo Steel produces include A2 tool round bars and A2 plates.
| Shape | Size | Length | Surface finish | tolerance |
| round bar | diameter 20mm-400mm | length 2500mm-5800mm | black | 0/+5mm |
| peeled | 0/+5mm | |||
| turned(machined) | 0/+2mm | |||
| plate | width*thickness 100mm-800mm*10mm-400mm | length 2500mm-5800mm | black | 0/+5mm |
| peeled | 0/+5mm | |||
| turned(machined) | 0/+2mm |
1.2379 steel Chemical Composition
| Chemical Composition | Range |
|---|---|
| Carbon (C) | 1.40% – 1.60% |
| Silicon (Si) | ≤ 0.60% |
| Manganese (Mn) | ≤ 0.60% |
| Chromium (Cr) | 11.00% – 13.00% |
| Molybdenum (Mo) | 0.7% – 1.20% |
| Vanadium (V) | 0.50% – 1.10% |
Equivalent Grades
| Standard | Equivalent Grade |
|---|---|
| China GB Standard Grade | Cr12Mo1V1 |
| American AISI/ASTM Standard Grade | D2 |
| Japanese JIS Standard Grade | SKD11 |
| German DIN Standard Grade | X155CrVMo121 |
| Japan Hitachi Standard Grade | SLD |
| Japan DAIDO Standard Grade | DC11 |
| Japan Fujitsu (NACHI) Standard Grade | CDS11 |
| Austrian Bohler Standard Grade | K110 |
| Sweden ASSAB (ASSAB) Standard Grade | XW41 |
1.2379 Heat Treatment
1.2379 steel, a high-alloy martensitic stainless steel, is renowned for its exceptional corrosion resistance, high hardness, and toughness. Heat treatment is critical to optimizing its mechanical properties and microstructure for specific applications. This article will explore the different heat treatment methods used for 1.2379 steel. It will discuss how these methods affect the steel’s properties. We will also look at the important factors for successful implementation.
Annealing:
- Purpose: To soften the steel, reduce its hardness, and improve its machinability.
- Process: Heat the steel to above 850°C, hold it at this temperature for a while, and then cool it slowly.
- Result: Reduces hardness and tensile strength, increases ductility and machinability.
Hardening:
- Purpose: To achieve maximum hardness and strength by transforming the microstructure to martensite.
- Process: Heat the steel to a temperature between 950 and 1050°C. Hold it at this temperature for a suitable time. Then, quickly cool it in water or oil.
- Result: Produces a very hard and strong martensitic structure.
Tempering:
- Purpose: To reduce the brittleness of hardened steel while maintaining a portion of its hardness and strength.
- Process: Heat the hardened steel to a temperature below the critical range, usually between 200-650°C. Hold it at this temperature for a specific time, then cool it down.
- Result: Reduces brittleness, improves toughness, and controls the final hardness level.
Other Heat Treatments:
- Nitriding: This process adds nitrogen to the surface layer of steel. This leads to harder surfaces, better wear resistance, and improved fatigue strength.
- Carburizing: This process adds carbon to the surface of the steel, creating a hard, wear-resistant layer. The core remains softer and more flexible.
Factors Affecting Heat Treatment Results:
- Heating Rate: The speed at which the steel is heated impacts how austenite forms and later changes to martensite.
- Holding Time: The time spent at the austenitizing temperature influences the grain size and homogeneity of the microstructure.
- Cooling Rate: The rapidity of quenching determines the transformation of austenite to martensite and the resulting hardness.
- Tempering Temperature and Time: These parameters control the degree of tempering and the final mechanical properties.
1.2379 Properties
| Property | Value |
|---|---|
| Hardness (HRC) | 60-62 HRC (after heat treatment) |
| Toughness | Good |
| Wear Resistance | Excellent (due to high chromium) |
| Machinability | Moderate |
Hardness
1.2379 steel is known for its impressive hardness. After proper heat treatment, it can reach a hardness level of about 60-62 HRC on the Rockwell Hardness Scale. This gives it excellent wear resistance. This property is crucial for tools that undergo constant abrasion and must maintain their integrity over time. Learn more about hardness testing basics here.
Toughness
Despite its high hardness, 1.2379 also offers good toughness. This means it can handle much stress and strain without breaking, which is important for tools that face high impact while in use. Its toughness comes from its balanced composition, which includes elements like molybdenum and vanadium that improve its durability.
Wear Resistance
The high chromium content of 1.2379 provides excellent wear resistance. This property ensures that tools made from this steel can last long, stay effective, and need fewer replacements. Carbide-forming elements further enhance the wear resistance, contributing to its long service life.
Machinability
While 1.2379 offers several advantageous mechanical properties, it is considered to have moderate machinability. This means that while it can be machined, it requires suitable equipment and techniques to achieve the desired results. Using the correct cutting fluids and tools can help machine this steel more efficiently.
Applications
- This steel finds suitability in producing various high-speed blanking dies used for silicon steel sheets.
- It is well-suited for precision stamping dies, cold extrusion forming dies, deep drawing dies, and blanking dies.
- Ideal for scissors, deep-drawing dies, and tube-drawing dies designed for high-efficiency shearing of thin materials.
- It is an excellent choice for complex, flexible tool dies and cold stamping dies requiring high wear resistance.
- Applications include embossing dies and cold forging dies.
- 1.2379 steel is reliable for heavy-duty stamping dies, cold shearing blades, and thread rolling plates.
- It serves well in cold heading molds and clay molds.
- Additionally, this steel is employed in abrasive plastic molding dies.
Why should you choose Aobo Steel as your tool steel supplier?
At Aobo Steel, we pride ourselves on our exceptional supply capacity and dedication to meeting customer demands. Our monthly shipments exceed 1,500 tons in the Chinese market, reflecting our robust production and delivery capabilities. With a strong network of over 40 trusted suppliers, we ensure a steady supply of high-quality tool steels to meet various industry needs.
To provide even greater flexibility, we maintain stock for select products, allowing us to fulfill urgent orders quickly. Additionally, we specialize in fully customizable solutions, tailoring our products to your exact specifications for optimal application performance.
Our strategic location near the Yangtze River gives us a significant advantage in export logistics, enabling fast and cost-effective shipping to customers worldwide. Whether you need standard products or custom orders, Aobo Steel is committed to delivering reliability, quality, and service excellence.
At Aobo Steel, quality control is at the heart of our operations. Our dedicated testing team with over 20 years of experience ensures every product meets the highest standards before leaving our facility. Our comprehensive quality assurance process includes chemical composition analysis, metallographic examination, hardness testing, physical performance evaluation, and ultrasonic testing (UT) to detect internal defects.
To guarantee reliability, we perform 100% quality inspection on all products before shipment, ensuring they meet the required specifications and industry standards. Additionally, we support third-party inspections upon request to provide our customers with extra confidence in the quality of our materials. With this rigorous approach, Aobo Steel consistently delivers tool steels that offer superior performance and dependability in various applications.
At Aobo Steel, our service capacity is designed to meet diverse customer needs efficiently and precisely. We provide fully customizable products, offering surface treatments, descaling, and custom-length cutting options to suit specific requirements. Our experienced foreign trade team is well-versed in handling international orders, ensuring smooth communication and seamless transactions.
To provide the best service, we guarantee a 24-hour rapid response to all inquiries, allowing us to address your needs promptly and effectively. At Aobo Steel, we are committed to delivering high-quality tool steels and exceptional customer service to support your success.
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