1.2510 tool steel (O1) is an oil‑hardening cold work tool steel with good wear resistance, stable hardness and easy machinability. It is widely used for blanking and punching dies, cutting tools, gauges and general cold work tooling that require reliable performance and simple heat treatment.
Compared with plain carbon steels, 1.2510 offers:
This balance of properties makes 1.2510 a practical choice for cost‑effective cold work tools in everyday production.
Blanking dies and light‑duty punching dies
Simple forming, bending, and embossing tools
Knives, shear blades, and cutting tools for general use
Gauges, jigs, fixtures, and measuring tools
| ZEICIN Grade | EN | AISI | JIS | DIN |
| 1.251 | 95MnWCr6 | O1 | SKS3 | 100MnCrW4 |
| C | Si | Mn | P | S | Cr | W | V |
| 0.90-1.05 | 0.145-0.35 | 1.00-1.20 | ≤0.035 | ≤0.035 | 0.50-0.70 | 0.50-0.70 | 0.05-0.15 |
Heat to 780–820°C, then cool slowly in the furnace to about 600°C and air cool. Annealed hardness: ≤230 HB (easy machining).
Heat to 800–850°C, hold to equalize, then oil quench. Hardness after quenching & tempering: about 55–58 HRC.
Temper at 150–250°C for at least 1 hour to obtain a final hardness of about 58–61 HRC with good toughness.
ZEICIN Steel provides 1.2510 cold work tool steel in a wide range of product forms, including round bar, flat bar, square bar, and steel plate. Available surface conditions include black, annealed, shot blasted, milled, peeled, turned, and ground to meet different tooling, machining, and industrial application needs.
We provide custom sizes, tailored processing options, and stable bulk supply, helping customers meet different industrial and tooling requirements efficiently.
| Type | Specification (mm) | Surface Condition |
| Round Bar | Φ20–300 or Customized | Black / Ground / Turned / Peeled |
| Flat Bar | (20-200)*(200-610)*(2500-5800) | Annerled / Shot-Blasted / Milled |
| Square Bar | (20-200)*(20-200)*(2500-5800) | Annerled / Milled / Black |
| Steel Plate | (50-200)*(210-610)*(2500-5800) | Black / Sandblasted / Granding |
Different surface conditions affect appearance, dimensional accuracy, and machining allowance. The images below show common delivery options (actual products may vary by size and batch).
ZEICIN STEEL specializes in high-performance cold-work tool steels. Our focus is on cleaner steel, uniform carbide distribution, stable heat treatment response, and improved wear resistance, ensuring longer tool life and consistent batch performance.
Our R&D team participates in national-level research programs and advanced technology projects. With strong technical support, we continuously improve the performance and reliability of high-performance tool steels.
We adopt advanced refining routes such as EAF + LF + VD + ESR, which improve steel cleanliness, reduce segregation, and enhance microstructure uniformity. This ensures better wear resistance and consistent performance.
We specialize in cold work tool steels such as D2 for dies, punches, shear blades, and wear-resistant components. Our materials provide high hardness, excellent wear resistance, and stable dimensional performance in demanding industrial environments.
“We use ZEICIN tool steels for our blanking dies. The wear resistance and dimensional stability are excellent, and tool life is much longer than before.”
“ZEICIN tool steels deliver high hardness and consistent cutting performance. The quality is reliable, and delivery is always on time for our production needs.”
“Stable quality and excellent heat treatment response. The materials perform very well in our punching tools and wear parts during long-term use.”
Yes. We are a factory. ZEICIN STEEL produces high-quality, cost-effective special steels, including stainless steel, tool & die steel, and high-speed steel. We also have our own import/export license, so we can serve overseas customers directly and support stable supply with batch traceability.
Yes. For first-time cooperation, we can provide a limited quantity of samples for verification (such as grade confirmation, machining trials, or heat-treatment evaluation). Samples can be shipped by international courier, and the courier cost is paid by the buyer. We value honest cooperation and look forward to a long-term win-win partnership.
Our common international payment methods include T/T and L/C. For trade terms, we can also support options such as DDU based on the order. The final payment method and terms can be confirmed according to your country/region, order value, and delivery method.
Our products use standard industrial packaging to ensure safe transportation. If you need custom packaging, please let us know when placing your order.
If the products are in stock, delivery usually takes 5–7 days.
If the products are not in stock, delivery time is about 30–40 days, depending on the order quantity.
