FAQ

Can you provide customized materials or processing services?

Yes, we provide a series of value-added services including material customization, fixed-size cutting, heat treatment and other supporting processing to meet the personalized needs of injection molds, stamping dies, die-casting molds and precision molds.

Yes, we have standardized workshops and advanced smelting, rolling, heat treatment and precision testing equipment, realizing independent control of the whole process from raw material procurement to finished product inspection.

Our mold steel products are widely used in injection molds, stamping dies, die-casting molds, precision molds and other professional mold manufacturing fields, serving the global mold industry.

Yes, we can provide customized mold bases of various specifications. Meanwhile, we are fully equipped with professional CNC machines and complete processing equipment to undertake cutting, milling, drilling and other deep processing services for mold steel and mold bases. We can support one-stop service from material supply to finished processing.

Yes, relying on years of industry experience and complete supporting capabilities, we provide global customers with one-stop solutions including material selection, supply, processing and technical support.

With standardized production management and complete inventory and production planning, we maintain stable supply capacity and strictly control production and delivery cycles to ensure on-time supply for customers.

We are a professional mold steel supplier facing the global mold manufacturing industry, providing high-quality products and supporting services to customers in many countries and regions around the world.

Many mold cutting edges chip or crack after a short period of use. It’s not mainly a hardness issue from heat treatment—the core problem is insufficient toughness of the mold steel. Conventional rolled materials contain more impurities and have coarse carbides. When there are sharp corners, narrow sections, or thin inserts, they crack under stress. This is the real reason behind about 90% of mold failures.

The same grade doesn’t mean the same quality. Some use electroslag remelted (ESR) steel or fully forged material, while others use recycled steel, rolled stock, or reworked scrap. Differences in raw materials, forging processes, and heat treatment mean that—even with the same name—the service life can vary by several times.

Stainless steel is hard, has high springback, and generates strong shear forces. Common grades like SKD11 and DC53 tend to be relatively brittle, so sharp-edge areas are prone to chipping. It’s better to use mold steels specifically designed for anti-chipping performance, with higher toughness while maintaining wear resistance, to ensure stable long-term mass production.

There’s no fixed standard—it depends on the stamping material, thickness, and die structure. For softer or thinner materials, the hardness can be set slightly higher. For harder materials, thicker stock, or narrow-edge features, the hardness shouldn’t be too high; otherwise, toughness will be insufficient and chipping is likely. The key is to balance hardness and toughness to match the actual working conditions.

Even the best raw material cannot deliver its performance without proper heat treatment. For example, with the same DC53 steel, some manufacturers have inadequate heat treatment, resulting in uneven hardness and high internal stress, which makes the mold prone to cracking. With dedicated, well-controlled heat treatment processes, hardness becomes uniform and internal stress is minimized, allowing the service life to increase several times.

8503 mold steel is the top choice. With 30% glass fiber, both wear and corrosiveness are already quite severe. Common steels like H13 or S136 tend to develop galling and surface degradation after a relatively short time. 8503 offers high wear resistance, anti-sticking properties, and corrosion resistance, enabling stable long-term mass production without the need for frequent polishing or mold maintenance.

Hot forging dies operate under prolonged high temperature and high pressure. Common steels like H13 and 3Cr2W8V have limited resistance to softening at elevated temperatures, so they can lose strength, deform, or collapse under such conditions. The core issue is insufficient high-temperature strength and thermal stability of the steel—choosing the right heat-resistant steel is key to solving this problem.

This working condition is highly prone to edge chipping and hole expansion. Conventional steels like DC53 or SKD11 simply can’t withstand it. You need to use 8566 anti-chipping mold steel. Its resistance to chipping is about twice that of D2 and four times that of SKH-9, preventing hole expansion and cracking, and enabling stable long-term mass production.

It mainly depends on the steel’s cleanliness and microstructural uniformity. Mold steel with high purity, fewer inclusions, and a uniform structure can achieve a high surface finish after polishing, with fewer scratches or pits. In contrast, steel with more impurities and a non-uniform structure is difficult to polish to a bright finish and is more prone to surface defects like dragging or roughness.

8503 mold steel can reach a hardness of HRC 59–61. Its toughness is about twice that of DC53, ensuring high wear resistance while also providing strong resistance to chipping. It also offers anti-sticking and corrosion-resistant properties, delivering excellent cost performance—significantly improved performance without a proportional increase in price.

There are mainly two reasons. First, the raw material composition may be uneven, with more impurities, leading to inconsistent hardness after heat treatment. Second, the heat treatment process may be poorly controlled—for example, uneven heating or inconsistent cooling rates can both cause hardness variations. We use dedicated, customized heat treatment furnaces, with each batch heated and cooled separately to ensure uniform hardness.

8503 mold steel is the most suitable choice. Cold extrusion of copper jewelry requires a high surface finish, with no scratches or copper powder adhesion. Ordinary mold steels tend to pick up copper powder, requiring frequent die maintenance and reducing efficiency. 8503 resists copper adhesion, eliminates the need for frequent repairs, delivers a superior surface finish, enhances product quality, and improves production efficiency.

Yes. For example, in stamping dies, using DC53 to stamp silicon steel sheets may yield a lifespan of around 200,000 cycles. With our DC53, the lifespan can reach about 700,000 cycles. When using 8566 to stamp stainless steel, the lifespan can reach around 600,000 parts—several times higher than conventional materials.

Electroslag remelting (ESR) is a refining process. Through ESR, impurities, gases, and micro-cracks inside the mold steel are significantly reduced, resulting in higher cleanliness, a more uniform microstructure, and better toughness. Compared with conventional rolled materials, the service life can be improved by 2–3 times. Our core steels are all made using ESR-grade raw materials.

8433 mold steel has a hardness of HRC 50–54. While the hardness is not particularly high, its core advantages are high-temperature strength and thermal stability. It is well-suited for high-temperature applications such as hot forging and hot bending. Under elevated temperatures, it resists deformation and cracking—performance that high-hardness mold steels typically cannot achieve.

Switch to 8433 heat-resistant mold steel. Brass hot forging involves high temperatures, and conventional H13 has limited resistance to high-temperature softening, making it prone to galling, cracking, and die collapse. 8433 offers higher high-temperature strength, better thermal fatigue resistance, and improved corrosion resistance, effectively solving these issues. Tool life can be increased by 2–3 times, and even after repeated repairs, the backside hardness of the die remains stable.

8566 is a mold steel specifically designed for anti-chipping performance, making it suitable for all stamping scenarios prone to edge chipping or cracking. These include stainless steel stamping, thin sheet punching, narrow-edge dies, difficult operations where the hole diameter is smaller than the sheet thickness, thick plate stamping, and forming dies. In any case where the die is prone to chipping or cracking, 8566 can effectively address the problem.

Absolutely. With 50% glass fiber, both wear and corrosiveness are extremely severe. Conventional steels like H13 or S136 may start to gall and powder within just a few days. 8503 is specifically developed for high glass-fiber applications, offering excellent wear resistance, corrosion resistance, and anti-sticking properties. Even with 50% glass fiber, it can run stably for long periods without frequent polishing or mold maintenance.

Switch to 8433 mold steel. Although ESR H13 performs better than conventional H13, its high-temperature strength and thermal stability are still not sufficient for hot forging 45 steel, so tool life remains limited. 8433 offers 2–3 times the high-temperature performance of H13. Many hot forging users have seen their die life double after switching to 8433, significantly reducing production costs.

The key is to choose a mold steel that balances high toughness and high wear resistance, rather than focusing only on hardness. Steels like SKD11 or D2 have high hardness but low toughness, making them prone to chipping. Standard DC53 has moderate toughness but tends to wear faster. Using 8566, which combines anti-chipping performance with good wear resistance, along with proper cutting-edge processing, can significantly extend edge life and reduce maintenance frequency.

Switch to 8566 mold steel. Stamping letters on copper involves fine and sharp cutting edges. D2 lacks sufficient toughness, making it prone to chipping or tool breakage. 8566 has strong resistance to chipping, allowing precise stamping of fine characters without edge failure, ensuring good product appearance.

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