Quality Die Casting Service

Die casting is a highly efficient manufacturing process used to produce complex, high-precision metal parts by forcing molten metal into reusable steel molds, known as dies, under high pressure. This technique allows for the creation of intricate shapes with tight tolerances, excellent surface finishes, and consistent quality, making it ideal for industries requiring durable and reliable components.

High Precision and Accuracy
Excellent Surface Finish
Material Versatility
Durability and Strength

BEST YOU NEED, BEST WE PROVIDED.

Why Choose Our Die Casting Services?

We specialize in precision die casting for both small and large volumes, offering solutions in aluminum, zinc, and other metals. Our quotes are detailed and transparent, ensuring that you understand all aspects of pricing and turnaround times. Whether you need custom die casting for complex parts or standard products, KeSu makes it easy to start your project with confidence, backed by our commitment to high quality and fast lead times.

High Quality Parts

ISO 9001:2015 certified, KeSu provides precision die casting with thorough quality inspections at various stages: pre-production, in-production, first article inspection, and pre-delivery. From die casting material selection to final inspection, our dedication ensures unparalleled excellence in die-cast components.

Fast Lead Time

KeSu ensures high efficiency and swift production. Our capabilities include up-to-date, automated facilities supporting complex custom projects. In our die casting service, punctuality meets precision. We’re committed to delivering top-quality products efficiently, ensuring order reaches our clients on time.

Competitive Pricing

Delivering top-tier die casting excellence without the premium price. Our optimized processes ensure clients receive unmatched value, blending quality with cost-effectiveness. While the per piece cost of die cast parts is relatively low, the tooling dies and maintenance costs can require a high initial investment.

Die Casting Specialist

Experts in custom die casting solutions, we enhance product durability and reduce costs. Our advanced techniques and machinery ensure high quality, functionality, and aesthetics in every part. We tailor our processes to each client’s unique needs, ensuring open communication and results that align with their vision.

Expertise & Experience

With decades in the die-casting industry, our seasoned team combines deep expertise with hands-on experience. We’ve mastered the nuances of the craft, ensuring each project meets the highest standards. Clients can rely on our industry veterans for unparalleled guidance and results.

Advanced Equipments

Our advanced die casting equipment ensures precision and efficiency, utilizing the latest technology for consistent high-quality results across all projects. Die casting offers typical tolerances ranging from +/-0.003″ – 0.005″ per inch but can go as tight as +/- .001” depending on your specifications, part geometry, and material.

manufacturing solutions

From Design to Prototyping to Production

KeSu factories with die casters that utilize the latest die casting machines and technology to deliver high-quality, on-demand parts to a wide variety of industries. Our offering focuses on the main leading types of die casting. These types can produce parts with complex geometry, close tolerances, and robust mechanical properties.

Customize Your Die Casting Service Solution

Custom Die Casting service

Rapid Prototyping

We offer high-quality rapid prototyping services in China, providing you with more competitive die casting prices and faster delivery times. We have developed the latest rapid prototyping technology to meet your design challenges, and will work with you to verify and improve your product die casting prototyping, conduct functional testing, and carry out engineering verification.

Rapid Manufacturing

KeSu is your best die casting manufacturing partner in China. We offer a range of solutions from effective rapid prototyping to production of die casting parts. Our die casting company's rich machining experience and ability to integrate resources enable us to meet the needs of any projects and ensure your parts always meet the highest quality standards.

Custom Die Casting

We provide one-stop rapid die casting services and cost-effective rapid custom die casting machining services. Do you need production-grade materials, complex geometric shapes, tight tolerances, or fine details? Working with the KeSu die casting factory, you can get die casting parts to the specs you require through the design prototyping and manufacturing process.

Our happy customers

We've helped thousands of customers succeed

Choosing The Right Prototype Manufacturer. One-to-one support service by a technical team, quick response within a few hours. Most competitive prices in the market, 30% lower than Europe and America.

★★★★★ 5/5

“Thank you for the warm message. It is my pleaseure to introduce other companies to yours as your work was excellent on the heatsinks we received from you earlier this year, and your craftsmanship speaks for itself. Keep up the good work.”

★★★★★ 5/5

“Alfie is the Technical Director whom I have know for many years and is currently seeking a low cost, out-sourced, component manufacturing resource who can be responsible for machining complex components with short delivery times without comprising B.Motion's high quality standards.”

★★★★★ 5/5

I would like to introduce Tony from Kesu Hardware Group.
He is my long term supplier with all my trust.
Can we please proceed the order for parts as quoted? Drawings and quote attached.

Employees 200+

0 +

Parts produced per year

0 k+

Machines 200+

0 +

Die Casting Materials

Name	Description
Aluminum Die Casting	Lightweight and strong, aluminum is ideal for automotive and aerospace parts requiring durability and minimal weight. Alloys include ADC12, ADC6, A360, A380. Advantages: 1. Lightweight & Strong: Delivers robust components without added weight. 2. Corrosion Resistance: Naturally withstands corrosion, ensuring longevity. 3. Malleability: Allows for intricate die-cast designs. 4. Cost-Effective: Abundance makes die casting affordable. 5. Thermal Conductivity: Excels in heat dissipation, ideal for heat-sensitive components.
Zinc Die Casting	Known for its toughness, zinc enables precise, high-tolerance casting for intricate designs and durable components. Alloys include Zamak 3, Zamak 5, Zamak 2, ZA8. Advantages: 1. Precision & Detail: Allows for high-precision components with intricate details. 2. High Strength: Offers exceptional durability and resistance to wear. 3. Ease of Casting: Fluidity ensures smooth, defect-free components. 4. Extended Lifespan: Resistant to environmental impacts, ensuring longer product life. 5. Cost-Effective Finishing: Achieves smooth finish, reducing post-processing costs.
Magnesium Die Casting	The lightest structural metal, magnesium offers an excellent stiffness-to-weight ratio, ideal for weight-sensitive applications. Alloys include AZ91D, AM60B. Advantages: 1. Ultra-Lightweight: Produces the lightest metal components. 2. High Strength-to-Weight Ratio: Maintains impressive strength despite lightness. 3. Excellent Damping Capacity: Absorbs vibrations, ideal for noise reduction. 4. Rapid Production: Allows faster die casting cycles for quicker production. 5. Eco-Friendly: Recyclable and requires less energy in production.
Copper Die Casting	Copper is excellent for parts such as heat sinks and electrical connectors due to its effective heat and electricity conductivity. Alloys include ZQA19-2, ZQA19-4, ZQA19-7, ZQA19-10.

Name	Description
As Cast	Provides a basic, functional finish for die casting products with relatively smooth surfaces and minor tool marks, suitable for non-cosmetic applications.
Polishing	Enhances the surface smoothness and shine of metal casts, reducing surface roughness to achieve a high-gloss finish that is visually appealing.
Sand Blasting	Offers a uniform, matte finish by blasting the surface with fine particles, which also helps to remove small imperfections and prepare the surface for further treatments.
Anodizing	Increases corrosion resistance and wear properties of aluminum cast parts, while also adding the option for coloration, enhancing both durability and aesthetics.
Powder Coating	Creates a thick, uniform coating that is tougher than conventional paint. Ideal for adding vibrant colors and additional protection against corrosion and chipping.
Brushed Finish	Produces a distinctive look with a pattern of fine lines on the metal surface, which can help in hiding fingerprints and minor scratches, adding both aesthetics and practicality.

Die Casting FAQs

What is the die casting process?

Die casting is a precision manufacturing process where molten metal is forced under high pressure (1,500–25,000 psi) into a steel mold, or die, to create complex parts. The process includes:

Mold Preparation: The die is lubricated and preheated for easy part removal and temperature control.
Metal Injection: Molten metal is injected into the die at high speed and pressure.
Cooling: The metal cools and solidifies rapidly within the mold.
Ejection: The die opens, and the solidified part is ejected.
Trimming: Excess material (flash, gates) is removed.

What are the advantages of die casting?

High Precision: Achieves tight tolerances (±0.1–0.5 mm) and complex shapes consistently.
Fast Production: Rapid cycle times enable high-volume manufacturing.
Strong, Lightweight Parts: Dense metal structure ensures durability with minimal weight.
Low Waste: Efficient material use reduces scrap and secondary machining needs.

What are the disadvantages of die casting?

High Initial Costs: Expensive dies and machines make it less viable for small runs.
Material Limitations: Best suited for low-melting-point metals like aluminum and zinc.
Porosity Risk: Rapid cooling may trap air, causing internal voids.
Size Constraints: More effective for smaller parts; large components may lose accuracy.

What are key design considerations for die casting?

Our engineering and sales teams will provide one-on-one CNC quote support for your project. Typically, for similar parts, CNC lathes cost 15% less to machine than standard 3-axis CNC milling. In contrast, the cost of 5-axis machining increases, continuous 5-axis CNC milling typically costs over 20% more than an indexed 5-axis machine (also referred to as 3+2 milling), and about double that of a standard 3-axis mill. To achieve the most cost-effective CNC machined parts, larger production runs are recommended to spread the cost of machine setup.

What is the lead time for die cast tooling?

Lead time for die cast tooling typically ranges from 2 to 12 weeks, depending on part complexity, material, and precision requirements. This includes design, mold machining, testing, and adjustments to ensure quality.

What are the tolerances for die casting?

Die casting tolerances vary by part size and material, typically ranging from ±0.1 mm for dimensions under 25 mm to ±0.5 mm for up to 250 mm. Tighter tolerances (±0.02 mm) are possible with post-machining. Materials like aluminum and zinc affect shrinkage and accuracy.

Can die cast parts be post-machined?

Yes, die cast parts can be post-machined to achieve tighter tolerances, smoother finishes, or complex features. Common processes include drilling, milling, and CNC machining, which correct defects like porosity and enhance precision for high-performance applications.