1.2510 Tool Steel GB 9CrWMn AISI O1 JIS SKS3
1.2510 tool steel is an oil-hardening cold work tool steel with excellent wear resistance, good toughness, stable heat treatment performance, and reliable dimensional stability. It is widely used for blanking dies, stamping dies, forming tools, gauges, cutting tools, and other precision applications that require high hardness, good machinability, and accurate dimensions after heat treatment.
Product Description
Xiri Tool Steel is a leading supplier of DIN 1.2510 tool steel (AISI O1) in China. 1.2510 is an oil-quenched cold work die steel with high wear resistance and good dimensional stability after heat treatment. It is often used to manufacture blanking dies and measuring tools. By adding tungsten and manganese alloying elements, this steel ensures a good balance between hardenability and toughness, making it suitable for precision machining.
Whether you need 1.2510 flat bars, O1 steel plates, or forged rounds, we provide custom dimensions with machining or grinding services. Our materials are strictly tested to ensure premium metallurgical structure.
1.2510 is an oil-quenchable, low-alloy cold-work tool steel, also known as O1 steel. Renowned globally for decades in mould manufacturing for its outstanding comprehensive properties and excellent machinability, it stands as a time-tested classic choice.
Chemical Composition of DIN 1.2510 / AISI O1 tool steel
| C | Si | Mn | P | S | Cr | W | V |
| 0.90-1.05 | 0.15-0.35 | 1.00-1.20 | ≤0.035 | ≤0.035 | 0.50-0.70 | 0.50-0.70 | 0.05-0.15 |
Supply Form & Size Range of 1.2510 / AISI O1 tool steel
We supply 1.2510 / O1 steel in various forms to meet your manufacturing needs:
Round bar: Diameter 16mm – 400mm
Steel Plate / Flat: Thickness 16mm – 400mm x Width 200mm – 610mm
Surface: Black, Peeled, Rough machined or Grinded.
Delivery Condition: Annealed (Hardness 230 HB max.)
Four Core Properties of 1.2510 Tool Steel
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Exceptional Wear Resistance
With appropriate heat treatment, 1.2510 steel forms high-hardness carbides, achieving surface hardness of HRC 60-62 with ease. This enables effective resistance to scratching and abrasion from workpiece materials, significantly extending mould life, reducing downtime for maintenance, and directly lowering your costs.
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Outstanding Toughness
Whilst maintaining high hardness, 1.2510 exhibits excellent toughness, enabling it to withstand impact loads. This is crucial for blanking dies, stamping dies, and forming dies, effectively preventing chipping or cracking under unexpected overloads or impacts, thereby ensuring production safety.
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Exceptional Dimensional Stability
As an oil-hardening steel, 1.2510 exhibits significantly lower distortion rates during heat treatment compared to water-hardening steels. This ensures your moulds maintain exceptional dimensional accuracy post-heat treatment, guaranteeing final product tolerances and reducing subsequent finishing costs and time.
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Superior Machinability and Polishability
In the annealed condition, 1.2510 exhibits favourable machining properties, facilitating turning, milling, drilling, and engraving operations. Its uniform composition also permits polishing to exceptionally high surface finishes, meeting the aesthetic demands of premium products.
1.2510 Tool Steel Applications
Cutting and Stamping Dies: Suitable for medium to low-volume production of blanking dies, punching dies, and bending dies.
Forming dies: Drawing dies, embossing dies, riveting dies.
Cutting tools and gauges: Slitting blades, gauges, fixtures, spindles.
Plastic moulds: Suitable for plastic forming moulds requiring wear resistance but not ultra-high corrosion resistance.
Our advantages in Processing 1.2510 Tool Steel
We understand that consistent material quality is the cornerstone of your production success. Therefore, we implement comprehensive quality control for every batch of 1.2510 tool steel:
Strict Source Selection: Rigorous raw material screening ensures precise and pure chemical composition (C, Mn, Cr, W, etc.).
Advanced Melting and Forging: Utilising techniques like electroslag remelting effectively reduces internal impurities and segregation, yielding a dense, uniform microstructure that lays a solid foundation for subsequent performance.
Precision Heat Treatment: Our specialist team performs exacting annealing within controlled atmosphere furnaces, guaranteeing uniform hardness (typically HB 190-210) across every delivered material. This optimises conditions for subsequent machining and final heat treatment.
Comprehensive Non-Destructive Testing: Employing equipment such as ultrasonic flaw detectors, we conduct 100% internal inspection of the steel to guarantee the absence of internal cracks, slag inclusions, and other defects. What we deliver is a reliable material that is consistent throughout, both inside and out.
Not sure about the best equivalent for your application?
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.
