D6 Tool Steel / DIN 1.2436 / GB Cr12W
D6 is not merely an ordinary steel designation; it represents the benchmark for performance in precision cold-working die steel. As an outstanding representative of high-carbon, high-chromium alloy steels, D6 achieves an exceptional balance between hardness, wear resistance and toughness through its precisely optimised chemical composition and rigorous heat treatment processes. Engineered specifically for withstanding immense impact forces and high-pressure, high-wear environments, it serves as the ‘invisible armour’ ensuring continuous, efficient operation in your precision blanking and forming processes.
Product Description
Xiri Tool Steel is a leading supplier of D6 tool steel (DIN 1.2436) in China. This grade represents the benchmark for performance in precision cold-working die steel. As an outstanding representative of high-carbon, high-chromium alloy steels, D6 achieves an exceptional balance between hardness, wear resistance and toughness through its precisely optimised chemical composition and rigorous heat treatment processes. It Engineered specifically for withstanding immense impact forces and high-pressure, high-wear environments, it serves as the ‘invisible armour’ ensuring continuous, efficient operation in your precision blanking and forming processes.
Whether you need D6 flat bars, 1.2436 steel plates, or forged rounds, we provide custom dimensions with machining or grinding services. Our materials are strictly tested to ensure premium metallurgical structure.
D6 tool steel is a type of cold-worked die steel with high carbon and high chromium content. It possesses extremely high wear resistance and appropriate toughness, and is suitable for manufacturing heavy-duty and highly wear-prone cold-worked dies and tools.
Chemical Composition of D6 / DIN 1.2436 tool steel
| C | Si | Mn | Cr | P | S | W |
| 2.00-2.25 | 0.10-0.40 | 0.15-0.45 | 11.00-12.00 | max 0.030 | max 0.030 | 0.60-0.80 |
Supply Form & Size Range of D6 / DIN 1.2436 tool steel
We supply D6 / DIN 1.2436 steel in various forms to meet your manufacturing needs:
Round bar: Diameter 10mm – 800mm
Steel Plate / Flat: Thickness 16mm – 400mm x Width 200mm – 800mm
Surface: Black, Peeled, Rough machined or Grinded.
Delivery Condition: Annealed (Hardness 255 HB max.)
Irreplaceable Performance of D6 Tool Steel
Exceptional Wear Resistance, Enduring Performance: The core appeal of D6 steel lies in its unparalleled wear resistance. Benefiting from abundant carbides formed by its high carbon and chromium composition, its surface hardness can be stably achieved at 60-62 HRC through heat treatment. This means that during prolonged, high-intensity stamping and shearing operations, D6 dies effectively resist intense friction and abrasion from metal materials, significantly extending service life and reducing downtime for replacements.
Combining Strength and Flexibility, Tough and Reliable: Does exceptional wear resistance typically come at the expense of toughness? D6 breaks this limitation. Through special heat treatment processes (such as high-temperature quenching combined with deep cryogenic treatment), it maintains ultra-high hardness while imparting outstanding impact toughness to the material. This enables D6 dies to effectively resist chipping and cracking risks even under extreme conditions involving repeated impact loads and high stress concentrations, ensuring production safety and stability.
Dimensional Stability, Consistent Quality: Precision manufacturing demands near-obsessive dimensional tolerances. D6 steel exhibits exceptional dimensional stability during heat treatment, with minimal deformation. This ensures moulds fabricated from it maintain precise cavity dimensions over extended periods, delivering a continuous supply of highly consistent, defect-free precision components while significantly reducing scrap rates and rework costs.
D6 Tool Steel Applications | The Driving Force Behind Core Industries
The value of D6 tool steel shines brightest in sectors demanding the most rigorous mould performance:
The Anchor of Precision Punching and Shearing: When high-speed punching and shearing of thin, hard materials such as motor cores, EI laminations, precision lead frames, and connectors occurs, cutting edges endure immense impact and wear. D6 steel is the preferred choice for manufacturing high-precision punches, dies, and progressive die stations, ensuring enduring edge sharpness and burr-free, smooth cut surfaces.
The “Steadfast Backbone” for Demanding Forming Dies: In forming processes like deep drawing, cold extrusion, and precision forging—where dies endure high pressures and complex stresses—D6’s compressive strength and high toughness prevent deformation and cracking of die cavities under immense pressure, ensuring precise and clean product contours.
The longevity gene for wear-resistant components: Equally suited for manufacturing critical parts in high-wear applications such as precision gauges, wear-resistant liners, and rollers, its exceptionally long service life significantly reduces maintenance costs and spare parts inventory pressure.
Our advantages in Processing D6 Tool Steel
Supreme performance stems from an almost obsessive pursuit of quality:
Pure Heritage: Selecting premium raw materials and employing advanced electro-slag remelting (ESR) or vacuum degassing ladle refining techniques, we thoroughly eliminate harmful impurities such as sulphur and phosphorus, along with gaseous inclusions from the molten steel. This establishes a foundation of clean, uniform internal microstructure.
Precision Forging: Strictly controlled forging ratios and temperature ranges thoroughly break down cast structures, refine grain size, eliminate porosity, and ensure a dense, defect-free, isotropic material.
Intelligent Heat Treatment: Employing computer-controlled multi-stage heat treatment (precision quenching + multiple high/low-temperature tempering cycles) combined with deep cryogenic treatment. This precisely regulates carbide precipitation morphology and matrix structure, maximising the material’s potential for hardness, wear resistance, and toughness.
Comprehensive Quality Assurance: An exhaustive inspection system spans the entire production cycle. From incoming raw material chemical analysis and ultrasonic testing during forging, to finished product dimensional precision measurement, hardness gradient assessment, and comprehensive metallographic analysis (ensuring uniform, fine carbide distribution), each stage reinforces exceptional quality.
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Why Manufacturers Choose Huangshi Xiri
Huangshi Xiri combines international-standard steel grades, a complete tool steel portfolio, strict quality control and reliable global supply. We match DIN / JIS / AISI equivalents precisely, offer cutting and heat-treatment services, and control every step from smelting to inspection. With stable capacity, on-time delivery and responsive technical support, we help manufacturers reduce risk, save costs and run production with confidence.
Contact Us
Contact Huangshi Xiri today for quotations, grade selection and technical support on tool steel, mold steel and alloy steel. Whether you need samples, cutting-to-size service or long-term supply for your projects, our engineers and sales team are ready to respond quickly with professional advice and reliable solutions for your manufacturing needs.
