Aobo Steel supply SKD12 steel for your project
Premium SKD12 Tool Steel Supplier for Unmatched Durability
SKD12 tool steel is a high-carbon, high-chromium cold-work tool steel widely used for applications requiring wear resistance and toughness. It is equivalent to A2 tool steel (according to AISI standards) and 1.2363 (according to DIN standards). With its superior balance of hardness, wear resistance, and machinability, SKD12 is ideal for cold-working operations such as cutting, stamping, and forming.
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.
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 |
SKD12 steel Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.95 – 1.05 |
| Chromium (Cr) | 4.75 – 5.50 |
| Molybdenum (Mo) | 0.90 – 1.20 |
| Vanadium (V) | 0.15 – 0.50 |
| Manganese (Mn) | 0.50 – 0.70 |
| Silicon (Si) | 0.10 – 0.40 |
| Phosphorus (P) | ≤ 0.030 |
| Sulfur (S) | ≤ 0.030 |
Equivalent Grades
| Standard | Equivalent Grade |
|---|---|
| DIN (Germany) | 1.2363 |
| AISI (USA) | A2 |
| JIS (Japan) | SKD12 |
| GB (China) | Cr5Mo1V |
Physical Properties
| Property | Value |
|---|---|
| Density | 7.8 g/cm³ |
| Thermal Conductivity | 25.0 W/m·K |
| Hardness (After Heat Treatment) | 58 – 62 HRC |
| Elastic Modulus | 210 GPa |
| Tensile Strength | 1570 MPa |
| Melting Point | 1450°C (2642°F) |
SKD12 heat treatment
| Process | Temperature Range | Purpose | Cooling Method |
|---|---|---|---|
| Annealing | 840°C – 860°C (1544°F – 1580°F) | Softens the steel for improved machinability | Slow cooling in the furnace |
| Hardening | 950°C – 980°C (1742°F – 1796°F) | Increases hardness and wear resistance | Air or oil quenching |
| Tempering | 180°C – 220°C (356°F – 428°F) | Improves toughness, reduces brittleness | Air cooling |
Applications
1. Cutting Tools:
Due to its wear resistance and toughness, SKD12 is often used to manufacture cutting tools such as punches, shear blades, and trimming dies.
2. Forming Tools:
SKD12’s high toughness and wear resistance make it an ideal choice for dies and punches in forming operations.
3. Cold-Working Tools:
The steel is used in cold-work tools like forming rollers, wire drawing dies, and deep drawing dies that require long service life under mechanical stress.
4. Stamping and Punching Dies:
SKD12 is highly suitable for stamping and punching dies, where durability and wear resistance are key to the tool’s performance.
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.
English 
Portuguese