- Coating: Nano-bronze coating
- Material: Cobalt-10 tungsten steel bar
- Applications: Side milling, shallow slotting, roughing and semi-finishing
- Generally applicable for HRC ≤ 45° carbon steel, 45# steel, cast iron, and copper alloys
DESCRIPTION

Dia12mm HRC55 4 Flute Flat Carbide End Mill
Description:
This Dia12mm 4 flute flat carbide end mill is engineered for high-efficiency and high-hardness material cutting, making it an ideal choice for improving your machining productivity.
High-Hardness Machining: Made from premium carbide with a specialized coating, it effectively processes quenched steel, mold steel, and other materials with a hardness of up to HRC55.
High Efficiency: The 4-flute design ensures stable cutting and smooth chip evacuation, enabling high-speed machining and significantly reducing cycle times.
High Precision: With sharp and wear-resistant cutting edges, it produces a superior surface finish and guarantees dimensional accuracy of your workpieces.
Versatility: Compatible with various CNC machines and machining centers, it is widely used in mold manufacturing and general mechanical processing.
Large quantity with big discount.













CNC Inserts - Frequently Asked Questions
1. How do I choose the right grade for my specific machining application?
Choosing the correct grade is crucial for tool life and performance. We provide a comprehensive Grade Cross-Reference Chart that maps our CD Carbide grades to major international brands like Sandvik, Mitsubishi, and Kyocera. If you are unsure, simply provide us with the workpiece material (P, M, K, S, H) and machining conditions, and our engineers will recommend the best solution.
2. Can you provide customized CNC tools based on our drawings?
Yes. As a factory-direct manufacturer, we specialize in bespoke engineering. Whether you need non-standard dimensions, specific chipbreakers, or customized coatings for unique alloys, our technical team can develop products based on your technical drawings (PDF/STEP) or physical samples.
3. Do you offer free samples for testing before bulk orders?
We understand that "trial cutting" is the only way to verify tool stability. We offer sample packs for professional buyers to test performance on their own CNC machines. Please contact our sales team with your machine specifications and the material you are processing to request your trial samples.
4. How do you ensure the quality consistency of your carbide inserts?
Our quality control is integrated into every step of the production process in Zhuzhou. We use high-purity tungsten carbide powder and advanced PVD/CVD coating equipment. Each batch undergoes rigorous inspection, including microscopic edge analysis and hardness testing, to ensure that the performance of the 1,000th insert is identical to the 1st.
5. What is the typical lead time for international B2B orders?
For standard models in stock (such as WNMG, CNMG, etc.), we usually ship within 3-5 business days. For customized tools or large-volume OEM orders, the production cycle typically ranges from 2 to 4 weeks, depending on the complexity of the design and coating requirements.
6. Are you a manufacturer or a trading company?
We are a direct manufacturing enterprise based in Zhuzhou, the hunan of China’s tungsten carbide industry. By cutting out the middleman, we provide factory-direct pricing and faster technical support. This allows us to offer more flexible MOQs (Minimum Order Quantities) for small-to-medium-sized distributors and specialized machine shops.



















