Investment casting aluminum

CIREX is one of the largest steel-casting companies in the world and produces complex castings with extreme precision using the “lost-wax” method. Thanks to this versatile method our engineers have considerable freedom in the product design and choice of materials. This means that in consultation with you we can produce optimum castings that meet your exact wishes and requirements.

CIREX is your development partner for successful castings, with the objective of achieving an optimum cast in joint consultation.



Casting A356

When most people think of investment casting, they think of casting steel for large jet engines. But investment casting is also great for commercial components. And while CIREX is well known for casting stainless steel, they are very successful at casting aluminium too. This is done by our parent company Signicast.

The component needed was originally designed for die casting, but the die-cast tooling was taking longer than expected, and the project launch date was rapidly approaching. Signicast’s engineering team stepped in to create ~50,000 aluminium parts to meet the customer’s strict timeline and hold them over until the die-cast tool was finished.

Flexibility with aluminium investment casting

Investment casting is not usually used to create parts quickly, but Signicast has automated every part of the process to realise the industry’s fastest leads times. For this particular customer, we went from designing the tool to part in hand in just four weeks. The speed and flexibility of Signicast’s in-house tooling made that possible.

Investment cast tooling is made from hardened aluminium, whereas die-cast tools are made from hardened steel. The process difference is that the aluminium tool creates the wax pattern that molten metal is poured into for investment casting. With die casting, molten metal is injected into the die. Therefore, the tool has to be much harder and able to withstand higher heat and force.

Watch this quick video to learn more about the investment casting process.