The difference between cast aluminum and die-cast aluminum


Cast aluminum generally refers to an aluminum casting manufactured by a casting process, and die-cast aluminum refers to an aluminum casting manufactured by a high-pressure die-casting method, the difference being mainly due to the difference in the casting process.

The casting process generally like: sand casting, dewaxing casting, die casting, gravity casting, low pressure casting. The die casting process is a high pressure die casting, which is produced by a cold chamber die casting machine.

The cast aluminum grades used in the two processes are also different. China’s national standard GB uses ZL to represent the cast aluminum grade, and YL represents the die cast aluminum grade. Usually cast aluminum castings can be heat-treated, generally T6 heat treatment, and die-casting parts because of the dense distribution of a large amount of gas inside, so it is not suitable for T6 heat treatment (because the temperature of T6 heat treatment is very high, lower than the melting point of aluminum alloy 15- At about 20 degrees, the gas in the die-casting part will expand and be forced out of the surface of the casting, which will cause the surface of the die-casting part to appear densely due to the gas-like point-like protrusions, and the appearance of the casting is seriously damaged and cannot be used).


But both could do many beautiful surface coating, and sharing more second service.

The advantages and disadvantages of these two processes in various aspects are analyzed and explained in other articles, please refer to 



1. Your professional is OEM casting ?
Yes, professional supplier  for OEM/ ODM aluminum and zinc alloy casting, designing mould and producing castings, main casting type is die casting & low pressure casting.

2. How to custom castings?

  • Customers send the IGS/STEP drawings, and PDF files with dimension or sample to us for offer;
  • Will talk about the details to meet castabilities;
  • Once part is suitable, we do offer, after customer`s acceptance on our prices, we will start the production of the tooling/mold after the deposit of mold/tooling cost paid;
  • After mold/tooling finished, will send the samples for customer`s check;
  • After samples approved, will prepare the production on trial order after customer`s payment for the balance for the mold/tooling cost.

3. What about your prices?

Kinds of die casting machines/equipment and skilled engineers will keep our prices very competitive without compromising the part`s quality.


4. What is your MOQ?

No requirements on the MOQ;

Flexible volume is accepted by us in view of this new project growing.


5. What’s your quality control device in house?
Monitor chemical property if needed, tensile test machine to control the mechanical property and UT checking method to control casting detect. Keeping QC at every steps.


6. Could do surface treatment invironmentally friendly?

We are committed to providing environmentally friendly surface treatments and comply with international standards such as common painting, spray, power coating, electrophoresis, oxidation, alodine, anodize, passivation, phosphating, pickling, rust prevention, etc.


7.What is your Trade Terms?

Usually, is FOB, EXW.


8.What is your payment term?

For tooling/mold cost, 50% as a deposit and the balance paid after samples approved by customer. For bulk order, 30% as a deposit and the balance paid after negotiation.


9. What is the delivery date?

For tooling/mold, it will take 35~45days that is up to the design.

For mass production, it will take 10~30days that is up to your quantity.


10. How about your packing?

Usually, Inner-Plastic Bag; Outer -Standard Carton Box, then cartons into pallet,  final into container. Carton size: according actual part packing size.


11.Where are you?

We are in Ningbo which Ningbo Port is the biggest port all over worlds. There are many shipment lines.


More parts examples: 

more castings

more aluminum castings alu castingcasting lighting


Whats more, nice discussion with our engineer 🙂 

Top engineer: Tony

Tel:       86 574 88498381

Fax:     86 574 88498381


Add: Shajiawa Industrial Zone, Dongqianhu Town,  Ningbo,Zhejiang, China