DF52 / *W2Mo5Cr4V2CoW2Mo5Cr4V2Co (M52 Modify) is a custom-developed high-speed steel by ZEICIN Steel, engineered for medium-to-low-speed cutting, forming, and die applications. This premium cobalt-alloy steel provides superior wear resistance, edge strength, and thermal stability in demanding industrial environments, offering long-lasting performance.
Unlike conventional high-speed steels optimized for extreme cutting speeds, M52 Modify focuses on providing controlled wear behavior and exceptional toughness during continuous operation. Its balanced alloy composition ensures long-lasting performance, reduced tool wear, and consistent results, even under high temperatures and heavy-duty tasks.
Low-Speed Cutting Tools
Ideal for producing drills, taps, milling cutters, and gear cutters, offering excellent wear resistance and strength for reliable cutting performance in demanding applications.
Heavy-Duty Molds
Perfect for punch dies, cold extrusion dies, and forming dies, where high durability and wear resistance are essential for heavy-duty tasks.
Industrial Components
Suitable for components requiring high wear resistance and strength, ensuring longevity and consistent performance in various industrial applications.
| ZEICIN Grade | GB | AISI |
| DF52 | *W2Mo5Cr4V2Co | M52 Modify |
| Elemnet | C | W | Mo | Cr | V | Co | Al | Mn | Si | S | P |
| Contene(%) | 0.89 | 1.80 | 5.00 | 4.00 | 1.83 | 0.85 | – | 0.38 | 0.88 | 0.03 | 0.03 |
Softens DF52 / *W2Mo5Cr4V2CoW2Mo5Cr4V2Co (M52 Modify) steel (HB ~255), reduces internal stresses, and improves machinability before hardening.
Heat to 1180–1210°C, followed by rapid cooling to achieve high hardness and wear resistance. This process locks in the steel’s high-performance characteristics.
Post-quenching tempering at approximately 550°C balances hardness and toughness while relieving residual stresses, resulting in a final hardness of 63–65 HRC.
ZEICIN Steel is a professional manufacturer of *W2Mo5Cr4V2Co (M52 Modify) high-speed steel, offering products in various forms produced by hot rolling and hot forging. We provide bulk supplies and customized size requirements to meet specific tooling and industrial applications.
| Type | Specification（mm) | Surface Condition |
| Cold-drawn Round Steel | φ1-12 | Black/Centerless Surface |
| Hot-rolled Round Steel | φ12-60 | Turned Surface |
| Precision Forged Round Steel (Spray Forming) | φ60-300+ | Turned/Peeled Surface |
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 invests in R&D for high-speed steels and martensitic stainless steels. Our focus is on cleaner steel, more uniform carbide distribution, and stable heat-treatment response to support longer service life and better batch consistency.
Our company research and development team：Our company is one Member of the key project of “the 13th five-year plan ”of the National ministry of science and technology, Our company enjoys National government support and financial subsidies.
Together with Shanghai University and a Beijing-based steel research institute, we have developed a rapid-solidification electroslag remelting (RS ESR) process route. This process helps improve steel cleanliness and carbide uniformity, supporting longer tool life and more stable performance.
We work with Baosteel Group on spray forming technology. Our team supports process development and engineering validation for spray-formed HSS, helping meet high-performance material development and scale-up needs.
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.
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