Die Casting Services

Precision die casting service for customized metal parts and products with fast turnaround times. Request a quoting to get started today.

  • Tolerance down to ± 0.004'' (0.1 mm)
  • 7/24 technical support
  • ISO 9001:2015 certified manufacturing partner

Save 30% budget in average

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Why Choose RapidDierct for Die Casting Parts

We provide a wide range of possible material types, surface finish options, tolerances, and manufacturing processes for your die casting parts. Based on your custom needs, we offer you different quotes and manufacturing suggestions so that you can get an individual approach and the most cost-effective solution.

We have established numerous of our own plants in China to make sure your casting parts are manufactured with high efficiency and fast lead time. Besides, our manufacturing capabilities take advantage of up-to-date and automated facilities that can support an assortment of your customized die casting projects, though their designs are complicated.

We are ISO 9001:2015 certificated company and committed to providing precision die casting services. Dedicated engineering team of RapidDirect operates rigorous quality inspections in different stages of the manufacturing process: pre-production, in-production, first article inspection and before delivery to ensure the highest quality parts are manufactured.

Advanced online quoting platform to enable you to upload design files and get a fast quotation for your die cast metal parts anytime and anywhere. Order tracking system on our platform allows you to monitor all of your orders and quotes and view each stage of the manufacturing process once you place orders. This makes the order process clear and transparent.

Our Precision Die Casting Services

If you have needs of custom metal parts, RapidDirect is a die casting service manufacturer that can help. Since 2009, we’ve hold our engineering team and equipment to a high standard to continually deliver strong and durable parts and prototypes. To ensure legendary quality, we operate strict die casting process that ensures that your custom requirements are being met. These are two types of die casting capabilities we provide.

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Hot Chamber Die Casting

Hot chamber die casting, also known as gooseneck casting, is a considerably quick process with a typical casting cycle only 15 to 20 minutes. It allows for high volume manufacturing of comparatively complex parts.

The process is ideal for zinc alloy, lean alloys, copper and other alloys with low melting point.

Cold Chamber Die Casting

Cold chamber die casting process is an very important procedure which helps  reduce the amount of heat and solve the corrosion problem in machine’s plunder and related components.

The process is primarily used for alloys with high melting points, like aluminum, magnesium, some copper, and ferrous alloys.

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Our experience in numbers

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Die Casting Applications

As a versatile manufacturing technique, die casting plays an important role in creating and producing many modern products, from aerospace structural parts to electrical enclosures. RapidDirect has provided innovative manufacturing solutions for different industrial applications. We offer high quality parts at competitive pricing to value customers in the following industries:

Automotive Parts

We specialize in making vehicle parts like gears, cylinders, gladhands, transfer cases, small engine parts, and components for lawn and garden tractors.

Aerospace Industry

Our magnesium and aluminum pressure die casting service can produce light, durable structural parts for aerospace with great resistance to corrosion.

Telecommunication Components

Produce electrical enclosures, connector housings, heat sinks, and many more components.

Commercial Products

Manufacture commercial parts including compressor pistons and connecting rods, heat sinks, bearing housings, parts of the sink faucet, meters.

Alloys Used to Make Die Casting Parts

The non-ferrous metals that have low fusing temperature can be used for the die casting process, like aluminum, zinc, magnesium, lead, copper. But some uncommon and ferrous metals are also possible. The following will explain the properties of the commonly used die casting alloys that we use for the majority of parts.

Aluminum Alloys

Aluminum die casting alloy is lightweight structural metal mainly containing silicon, copper, magnesium, iron, manganese, and zinc. It exhibits high thermal conductivity, electrical conductivity, cutting performance, and small linear shrinkage, making it has excellent casting performance and filling ability. Moreover, aluminum alloys can maintain good mechanical properties under high or low temperatures because of their small density and high strength.

Commonly used Aluminum alloys:

  • A380
  • A360
  • A390
  • A413
  • ADC-12
  • ADC-1

Zinc Alloys

The main elements added to zinc die casting alloy are aluminum, copper and magnesium. It provides a good surface finish without the need for secondary processing. Importantly, zinc alloy is more cost-effective and stronger than other comparable alloys. Also, it has better fluidity and corrosion resistance so they are mainly used for die-casting meters, automotive parts housings, and other complex metal parts.

Commonly used Zinc alloys:

  • Zamak-2
  • Zamak-3
  • Zamak-5
  • Zamak-7
  • ZA-8
  • ZA-12
  • ZA-27

Magnesium Alloys

The main alloying elements of Magnesium die casting alloy are aluminum, zinc, manganese, cerium, thorium and a small amount of zirconium or cadmium. It has the advantages of high strength, low viscosity, good fluidity, great corrosion resistance and easy filling of complex cavities. Magnesium alloy can be used for die casting of mold and thin-wall parts without thermal cracks.

Commonly used Magnesium alloys:

  • AZ91D
  • AM60B
  • AS41B

Die Casting Surface Finishes

Post-processing and finishing is the final step of precision die casting. Finishing can be applied to remove the surface defects of cast parts, enhance mechanical or chemical properties, and improve products’ cosmetic appearance. There are six types of die casting surface finish options.

As Cast

Regular casting finish obtained without the use of high-end tools or machinery. Like Zinc and Aluminum-Zinc parts can be as cast but still keep high corrosion resistance.

All materials
As Cast Image

Powder Coating

Powder coating can be used to spray a free-flowing, dry powder to the zinc alloy and aluminum alloy die casting. Under strong electrostatic and high temperature, the powder will be uniformly adsorbed on the surface of the casting, forming a powder layer that can mask defects very well.

Aluminum, Stainless Steel, Steel
Black, any RAL code or Pantone number.
Gloss or semi-gloss
Vehicle parts, household appliances, aluminum extrusions

Bead Blasting

Bead Blasting is a process that sprays fine glass beads at high speed onto the surface of die casting parts using compressed air as the powder. The appearance or shape is changed, and the part obtains excellent cleaning and surface preparation for secondary finishing operations.

ABS, Aluminum, Brass, Stainless Steel, Steel
Sa1, Sa2, Sa2.5, Sa3
Cosmetic parts


Mainly for aluminum alloy die casting. Anodizing utilizes electrochemical principles to generate a layer of Al2O3 (aluminum oxide) film on the surface of the parts. This decorative layer of oxide film provides high insulation and wear resistance.

Clear, black, grey, red, blue, gold.
Smooth, matte finish.
1.8 μm to 25 μm (0.00007")

Electro Phoresis

Used for aluminum alloy, zinc alloy die casting, etc. Electrophoresis applies metallic luster and an unlimited range of colors on the casting parts. It also can enhance the surface properties and corrosion resistance of metal alloy parts.

Aluminum, Zinc, Stainless Steel
Metallic luster
Electro Phoresis Image


Electroplating can be functional, decorative or corrosion-related. Many industries use the process, including the automotive sector, in which chrome-plating of steel automobile parts is common.

Aluminum, Steel, Stainless Steel
Plate type:
Tin, Nickel, Electroless Nickel
Smooth, glossy finish
Electrical connections, jewelry, radiation shields
Galvanizing, nickel plating, tin plating, passivation


Brushing is a surface treatment process in which abrasive belts are used to draw traces on the surface of a material, usually for aesthetic purposes.

ABS, Aluminum, Brass, Stainless Steel, Steel
Sa1, Sa2, Sa2.5, Sa3
Cosmetic parts

Die Casting Technical Standards

Minimum part weight0.017 kg
Maximum part weight12 kg
Minimum part size∅ 17 mm × 4 mm
Maximum part size300 mm × 650 mm
Minimum wall thickness0.8 mm
Maximum wall thickness12.7 mm
Tolerance class for castingISO 8062 ST5
Minimum possible batch1000 pcs

Preferred Online Prototyping and Manufacturing Services

RD client

Hunt Dabney

The 4 parts look great and work very well. This order was to solve a problem on some equipment, so only the 4 parts were needed.

We were very pleased with your quality, cost and delivery, and will certainly order from you in the future. I have also recommended you to friends who own other companies.

- Owner at HDA Technology
RD client

Bjorn Steinar Blumenstein

The service at RapidDirect is phenomenal and Cherry has assisted us with great patience and understanding.

Great service as well as the product itself, exactly what we asked for and works amazingly. Especially considering the small details we were requesting. Good looking produckt.

- Product Designer at Plasplan
RD client

Drew Mumaw

Excellent job by production being able to use grips for the anodizing bath instead of a hole in the center of the part.

Always quick and easy dealing with Tammy – great communication! We look forward to doing business with RapidDirect soon.

- Mechanical Engineer
RD client

Rayner Moss

The motor tube was great, within tolerances and the finish was very nice. It was packaged very well and even though the box was clearly thrown around in transit, the contents were perfect.

The next time I need something machined I will definitely be coming to you.

- Individual Engineer

Die Casting FAQs

What are the steps of die casting process?

There are 5 steps to produce die casting products.
Step 1: Prepare mold. You need to heat the mold to a specific temperature and then spray the interiors of the mold with a refractory coating or lubricant.
Step 2: Inject material. After the solid metal alloy is melted into a liquid state, pour molten metal into the mold under a required pressure.
Step 3: Cool the metal. Once the molten metal is injected into the cavity, take sufficient time to let it harden so that it can form the shape of the mold.
Step 4: Unclamp the mold. Next, unclamp the mold carefully and take out the cast part.
Step 5: Trim the casting part. The last step is to trim sharp edges and excess material to make the desired component shape.

Which metal work best for die casting?

There are numbers of metals and alloys to choose for die casting project. The commonly used metals are zinc, aluminum and magnesium. Also, you can choose copper, brass, tin and lead for custom casting parts, However, it’s hard to determine the best metal because each metal alloy has its unique physical characteristics, advantages and disadvantages. Therefore, if choosing the ideal metal bothers you, a custom die casting parts manufacturer RapidDirect can help you.

Is temperature important for metal die casting?

Yes, the temperature is a very significant factor in metal casting. The proper temperature can ensure the metal alloy is heated correctly and continuously flow into the mold. Otherwise, too high temperature can result in the damage of the mold; too low temperature can lead to shrinkage defects of the cast parts. So, it’s important to monitor the temperature.

Do die cast metals rust?

There is no fixed answer. The casting parts are commonly produced using aluminum, zinc and magnesium that are not mainly made from iron, which makes them corrosion resistant and hardly rust. But if you don’t protect your products in the right way for a long time, there is the possibility that they will rust.

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