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We have compiled our answers to frequently asked questions in one easily accessible area so you can quickly find helpful information. This is a great place to start if you have general inquiries about our products.
  • +Benefits of Enchuang die castings

    1. Cost-effective high volume production
    2. Value engineering achieves cost savings
    3. Part consolidation eliminates operations
    4. Manufacture of complex net shapes
    5. Consistent quality over high volumes
    6. Tight tolerances achieved as cast
    7. Minimal draft angles on internal features
    8. Long tool die life
    9. Lower tool cost on multi-slide process-ss

  • +What Is Low Pressure Die Casting?

    Low Pressure Die Casting:This is a repetitive process where identical parts are cast by injecting molten under low pressure into metal dies. This process requires complex machinery similar to high pressure die casting.


    Fair production rates up to 30/ Hr

    Thin wall thickness possible (2-3mm)

    Better linear tolerances than gravity casting surface finish improved on gravity casting, but not up to pressure die casting standards

    High Yields possible as runners and risers not required

    Reduced finishing is required

    Pore free castings are obtainable

    Sand cores may still be used to allow complex castings die costs far lower than for pressure die casting

    Castings are heat treatable


    Size of casting limited by machine size

    Production rates not up to pressure die casting

    Feeding thin sections through thick sections is not recommended casting weight range 5 Kg - 25 Kg

    Approximate economical quantity range >1000 

  • +What Is High Pressure Die Casting ?

    High Pressure Die Casting: Pressure die casting is a repetitive process casting identical parts by injecting Aluminum into metal moulds at pressures in the order of 1000psi. Complex machinery and expensive tooling is required for this process.


    Production rates may be in the order of 200/ Hr

    Thin wall thickness at 1 - 2.5mm

    The best surface finish is produced by this method

    Very fine grain structure is obtainedThe castings have high strength in the as-cast condition

    Good linear tolerances and repeatable properties are obtained


    Size of castings limited by the machine

    Sound, thick sections are difficult to cast

    Core configuration may be complex to enable disassembly

    Porosity may become a concern

    High start up costs require long production runs to reduce the overall cost

    Castings cannot be heat treated casting weight range 0.01 Kg - 25 Kg

    Approximate economical quantity range > 10,000 per annum.

  • +Engineering and Mold

    • We have engineer design team and mold manufacturing team.
    • Our mold design engineers have over 15+ years mold design and manufacture experiences in
    • diecasting industry.
    • We have project engineers follow up the whole process for customer's projects.
    • We have spark machines,milling machines,grinding machines,wire cutting machine and
      high precision processing equipments. Process the molds with strict control in every steps.


  • +Our advantages:Product development direction

    Product development direction : precision and finish both control well.
  • +Our advantages:quality system of IATF16949

    Follow and execute quality system of IATF16949.
  • +Our advantages:stabilized and outsourced electroplating suppliers

    We have stabilized and outsourced electroplating suppliers, former FCI electroplating expert_Doctor
    Quan is our plating technical consultant.
  • +Our advantages_ Automatic production

    Automatic production:Die casting machine with ABB arm;Small die casting parts equipped with CCD automatic check machine; Small die casting parts with automatic packing machine.
  • +Are you a factory or trading company?

    ENCHUANG is a die casting factory in Dongugan of China, welcome to visit us.
  • +How to control the quality?

    We have QC department, the two-dimension measuring instrument and three-dimension measuring instrument, in a mass production stages, we will have the special QC and PE engineer to control the product quality.
  • +What’s your mold making lead time?

    It's based on the product size and structure, usually the mold making lead time is 4 weeks from the mold design confirmed to mold finished.
  • +What industries we serve?

    With nearly 15 years of design experience and expertise, ENCHUANG Precision Die Casting can handle any industrial die casting need skillfully and economically. J&M Precision Die Casting expertly produces Aluminum and Zinc Die Castings for a diverse array of industries including:

    • Aerospace
    • Agricultural
    • Appliances
    • Architectural
    • Automotive
    • Computer and Office Machines
    • Electronics
    • Electric Motor
    • Enclosures
    • Zinc plumbing tool, wrench used for drain
    • Lighting
    • Metal Working
    • Plumbing
    • Toys, Sporting Goods,
    • and Personal Goods
    • Transportation Industries

  • +What are the specific die casting products?

    ENCHUANG Precision Die Casting designs and creates Aluminum and Zinc Die Castings to exacting specifications. Some of the many industrial parts we die cast include:

    • Electric Motor Components
    • Locomotive Parts
    • Architectural Hardware
    • Decorative Hardware
    • Entrance and Exit Hardware
    • Plumbing Tools and Hardware
    • Security Hardware
    • Enclosures

    • Fluid Metering
    • Industrial Parts
    • Electro-Mechanical
    • Control Equipment
    • Head Lamp Buckets
    • Household and Commercial
    • Lighting Fixtures and Lamp Bases
    • Hubs (for Regulators for HVAC)

  • + Why choose zinc die casting?

    •Broad Market Appeal 
    Zinc die casting is ideal for products ranging from toys to electronics. components can be as simple as a sink faucet or as complex as a connector housing.   

    •Cost Savings 
    The advantages of zinc die casting are endless, as it is an efficient, economical process offering a broader range of shapes and components than any other manufacturing technique. Zinc die castings can provide integral fastening elements, such as bosses and studs. Holes can be cored and made to tap, threads can be cast both internally and externally, and parts can be cast with thin walls or other defining features. 

    Zinc die casting produces multi-cavity, complex shapes within closer tolerances than many other production processes. In addition to producing high volume runs of virtually identical parts, it produces rugged heat and wear resistant parts that are dimensionally stable, while maintaining exceptionally close tolerances.   

    •EMI/RFI Shielding 
    The zinc die casting process produces parts with excellent EMI/RFI shielding characteristics, allowing the cast to act as an electrical ground for internal circuits. Zinc die castings are stronger than plastic parts with similar dimensions. Plus, because they do not consist of separate parts welded or fastened together, the strength is that of the alloy rather than the joining process.   

    •Outstanding Finish 
    Zinc die cast parts can be manufactured with smooth or textured surfaces, and are easily plated or finished with minimal surface preparation. 

    •Longer Tool Life 
    Thousands and in some cases millions of components of identical zinc die castings can be produced before new tooling is required.  
  • +Can we get a sample without mold?

    Yes, CNC or 3D printing can produce a prototype within 2-5 days

  • +What is the minimum order quantity(MOQ)?

    3000 pcs or negotiatable.

  • +Aluminum die casting provides several advantages over alternative processes and materials

    Aluminum is a versatile material used for many applications, giving mechanical designers significant advantages when creating lightweight parts that withstand high temperatures.  Aluminum die casting is often used in the automotive industry as a light and durable alternative to other metals while retaining maximum stability in thin walls. It’s an exceptional thermal conductor for heat dissipation while maintaining rigidity and resilience when used for EMI/RFI shielding in the telecom and electronics industries. Because of its superior performance, aluminum die casting provides several advantages over alternative processes and materials including:

    • Lightweight
    • High dimensional stability
    • Corrosion resistance
    • Excellent mechanical properties
    • Superior EMI and RFI shielding properties
    • High thermal and electrical conductivity
    • High Strength-to-weight ratio
    • A variety of decorative and protective finishes
    • Made from 100% recycled material and fully recyclable

  • +Major Alloy Characteristics

    Alloy 3: (ZAMAK 3, ZP3, ZL3, ZP0400, ZnAl4, ZDC2)
    Alloy 3 is the most widely used zinc alloy in North America. Its popularity is due to an excellent balance of desirable physical and mechanical properties, superb castability and long-term dimensional stability. No. 3 also offers excellent finishing characteristics for plating, painting and chromate treatments. It is the “standard” by which other zinc alloys are rated in terms of die casting.

    Alloy 5: (ZAMAK 5, ZP5, ZL5, ZP0410, ZnAl4Cu1, ZDC1)
    Alloy 5 is the most widely used zinc alloy in Europe. No. 5 has excellent castability characteristics and improved creep performance over No. 3. No. 5 castings are also marginally stronger and harder than No. 3, however, these improvements are accompanied by a reduction in ductility that can affect formability during secondary bending, riveting, swaging or crimping operations. No. 5 contains an addition of 1% copper which accounts for these property changes. When an extra measure of tensile performance is needed, No. 5 castings are recommended. The alloy is readily plated, finished and machined, comparable to No. 3 alloy.

    Alloy 7: (ZAMAK 7, ZL7)
    Alloy 7 is a modification of No 3 with a lower magnesium content and tighter impurities specification. This results in improved casting fluidity, ductility and surface finish, making the alloy popular where the die caster is making thin walled components requiring a good surface finish. However, several new high fluidity alloys have recently been developed with superior thin wall characteristics (see high fluidity alloy).

    Alloy 2: (ZAMAK 2, ZP2, ZL2, ZP0430, ZnAl4Cu3, Kirksite)
    Alloy 2 offers the highest strength and hardness of the conventional zinc alloys. The high copper content (3%) in No. 2 results in property changes upon long-term aging. These changes include slight dimensional growth, lower elongation and reduced impact performance (to levels similar to aluminum alloys) for die cast products. No. 2 alloy exhibits excellent castability and maintains higher strength and hardness levels after long term aging. No. 2 alloy is a good bearing material, and may eliminate bushings and wear inserts in die cast designs

    ZA-8: (ZP8)
    A good gravity casting alloy, ZA-8 can also be hot chamber die cast and is readily plated and finished using standard procedures for conventional zinc alloys. When the performance of Alloys No. 3 or No. 5 is in question, ZA-8 is often the die casting choice because of high strength and creep properties and efficient hot chamber castability.

    ZA-12 is the best gravity casting alloy for sand, permanent mold and the graphite mold casting process. It is also a good (cold chamber) die casting alloy. ZA-12 often competes with ZA-27 for strength applications. An excellent bearing alloy, ZA-12 is also platable, although plating adhesion is reduced compared to the conventional zinc alloys.

    ZA-27: (ZP27)
    This is an exceptionally strong alloy with a reported yield strength of 380 MPa (55ksi). It is light, and has excellent bearing and wear performance. Like ZA-12, this is a cold chamber die casting alloy and additional care is needed to ensure a sound casting. ZA-27 is not recommended for plating. When brute strength or wear resistance properties are needed, ZA-27 has demonstrated excellent performance.

    Developed by General Motors, this alloy has improved tensile strength, hardness and creep performance compared to the conventional zinc alloys. ACuZinc5’s strength and hardness properties are comparable to ZA-12. Testing has also shown ACuZinc5 to have excellent wear characteristics. Although this alloy is a hot chamber die casting alloy, it is more difficult to die cast with a higher wear rate of the shot end components in the die casting machine.
  • +What other questions can i answer to receive a quick turn around on my quote?

    To expedite your request for a quote, please include:

    • Component application or function
    • Alloy/Material
    • Annual production quantity
    • Approximate size of component
    • Approximate life of program
    • Where the program ship to location is
    • 3D CAD and 2D files
  • +If i send you a 3D cad (step) file, why do you need 2D drawings?

    The 3 CAD files are helpful, but most do not include tolerances or additional notes that may apply to the part, which is why the 2D drawings are needed.
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