Metal casting

Your metal foundry in casting steel

CIREX is one of the largest lost wax foundries in the world. Through our decades of experience with investment casting, we can assure efficiently produced high quality castings. With foundries in the Netherlands and the Czech Republic, CIREX is well represented in Europe when it comes to metal casting.

Different types of steel

CIREX has the possibility to compose her own alloy elements, so nearly any type of steel can be created and casted in house. Below you will find a short overview of the steel types that are regularly cast at CIREX.

DINMaterialSimilar toStrength (N/mm2)Elongation (%)Hardness
1.2346GX 38CrMoV5-1-> 1300-50-58 HRc
1.2436X 210CrW12---45-55 HRc
1.4112GX 90CrMoV18---< 30 HRc
1.4308GX 5CrNi19-10SS304> 440> 3075-90 HRb
1.4309GX 2CrNi19-11SS304L440-460> 3070-80 HRb
1.4317GX 4CrNi13-4-800-1000> 1522-30 HRc
1.4408GX 5CrNiMo19-11-2SS316> 450> 2075-90 HRb
1.4409GX 2CrNiMo19-11-2SS316L> 450> 2075-90 HRb
1.6220G 20Mn5-500-600> 1280-90 HRb
1.7131G 16MnCr5SAE 5115550-7008-2590-100 HRb
1.7225GS 42CrMo4-650-800> 1290-100 HRb

High grade steel alloys

In addition to the above mentioned “standard’ steel alloys, CIREX can also cast high quality and special steels. These types of steel are characterised by high tensile strengths, high elongations, high hardness or corrosion resistance. That is why these alloys are especially suitable for operating in environments which are aggressive (hostile) or subject to large differences in temperature. Below you will find a short overview of these types of steel:

DINNameSimilar toStrength (N/mm2)Elongation (%)Hardness
1.4549GX 4CrNiCuNb16-417-4PH> 1000> 6> 30 HRc
2.4964GX 275CoCrW 55-30-12Stellite> 750-37-43 HRc
2.4603NiCr30FeMoHastelloy-> 8-
2.4856NiCr22Mo9NbInconel 625---
-GJS-X SiMo 5-1SiMo> 550> 5-
-Ni-Resist D-5S---
1.3912Invar 36Invar---

CIREX Foundry NL

cirex gieterij

At the knowledge centre and headquarters in Almelo, a team of specialist engineers, product developers, metallurgists …

Read more

CIREX Foundry CZ

For the production of smaller series of complex steel components, CIREX has set up a modern lost- wax model foundry in the Czech Republic …

Read more

CIREX Finishing CZ

cirex finishing machining investement casting

The cast components from the foundries in the Netherlands and the Czech Republic are finished at this location according to the customer-specific …

Read more

CIREX Finishing SK

CIREX Finishing Slovakia

The cast components from the foundries in the Netherlands and the Czech Republic are finished at this location in Slovakia according to …

Read more


CIREX develops and produces high quality investment castings which can be cast in virtually any steel alloy. Steel is an alloy consisting of iron (Fe) and carbon (C), where the term ‘steel’ is used for iron alloys with a limited amount of carbon (less than 1,9%). When the iron contains more than 2% carbon, we talk about ‘cast iron’ instead of steel.

Next to the basic elements of iron (Fe) and carbon (C), steel often contains multiple alloy elements such as: chromium, nickel, manganese, silicon or molybdenum. Depending on the different alloy elements and the quantity of these elements (%) within the steel, a unique steel alloy can be created. By varying with different alloy elements and quantities, almost any steel alloy can be created and cast.

Steel can be divided into three different groups based on the amount of added alloy elements:

  • Unalloyed steel                   (maximum 1,5% alloy elements)
  • Low-alloyed steel                (from 1,5% to 5% alloy elements)
  • High-alloyed steel               (more than 5% alloy elements)

Stainless steel (INOX) is one of the steel types that CIREX is specialised in. Stainless steel is cast in large quantities. This steel type is known for its corrosion resistance after contact with aggressive  substances and water. Next to the elements iron(Fe) and carbon (C), stainless steel also contains chromium (Cr) and nickel (Ni). For more information about stainless steel investment casting, click here!


A proper design starts with the right choice of material and knowledge of steel. The metallurgists of CIREX will be glad to assist you in choosing the most appropriate alloy for your application. Depending on the application, the necessary hardness, tensile strength or elongation of the steel, an alloy will be determined and the most appropriate steel will then be chosen. Our metallurgists have extensive practical knowledge of steel alloys, heat & surface treatments and casting structures. Do you have any specific questions? Then feel free to contact CIREX.