Steel for castings

As a casting material, steel is certainly a master of diversity. This is made possible by its special composition of iron, carbon and other alloying elements. For your steel castings, we can also individually adapt the chemical composition of the material to your requirements. Furthermore, heat treatments allow us to adjust the material with high precision to your specifications. 

  • Versatile use in various industries 

  • Very good mechanical properties 

  • High thermal and chemical resistance 

Corrosion resistant steel

No risk of damage from rust, acid and heat – the large group of corrosion-resistant steels proves to be particularly robust. How resistant the material is depends on the elements to be alloyed. We offer maximum flexibility in this regard: We stock a large number of corrosion resistant steels in our materials portfolio and routinely cast these with above-average quality. Customers from numerous industries such as foodstuffs, chemicals, plant and mechanical engineering benefit from this. Material standard: e.g. DIN EN 10283 

Typical applications:

  • Mechanical engineering 

  • Chemical industry 

  • Food industry

  • Corrosion resistant
    Depending on the composition, resistant to pitting- and crevice corrosion and stress corrosion cracking

  • Machinability
    Good weldability and machinability

  • Further properties
    High deformability, low thermal conductivity

Duplex steel

A two-phase structure of austenite and ferrite has given duplex steel its good reputation. The special property of this steel group is its increased alloy content with above-average chromium content – this ensures high corrosion resistance and strength combined with good workability. For steel casting we offer a wide range of duplex steels – including the group of super duplex steels with PREN values > 40. Material standard: DIN EN 10283 

Typical applications:

  • Offshore applications 

  • Chemical industry 

  • Food industry 

  • Resistance
    Special resistance to stress corrosion cracking and pitting

  • Weldability
    Duplex steel can be welded well

  • Further properties
    High strength, operating temperatures of -50 to 250 °C

Heat resistant steel

Whenever the heat is on for steel castings, a casting material is needed that excels with outstanding resistance. Heat-resistant steel has a high alloy content of chromium, nickel and silicon. As a result, it proves extremely resistant to hot gases and combustion products above 500 °C while simultaneously having good mechanical properties. At ACTech, heat-resistant steels are firmly anchored in our materials portfolio. Material standard: DIN EN 10295 

Typical applications:

  • Steel castings for high temperatures at 600 - 1,000 °C 

  • Engine construction, exhaust areas 

  • Turbochargers 

  • Furnace construction

  • Thermal properties
    Good scaling resistance, good heat resistance

  • Weldability
    Good weldability

  • Further properties
    High ductility, good workability at room temperature, corrosion resistance

High-strength cast steel with good weldability

High strength and good weldability – not every steel offers this mix of advantageous properties. High-strength cast steel, on the other hand, does: It has a martensitic microstructure and thus scores points with very high strength. It can however still be welded well, and is therefore the best choice for high-strength steel castings intended for further processing. Material standard: SEW510 

Typical applications:

  • Heavy-duty welded constructions 

  • Vehicle construction 

  • Plant and mechanical engineering 

  • Offshore

  • Strength
    High 0.2% yield stress between 400 - 950 MPa

  • Weldability
    High-strength cast steel with good weldability

  • Further properties
    Good ductility at low temperatures


FAQ

Can investment casting also be used for casting steel?

Can investment casting also be used for casting steel?

Yes, investment casting of all common steel alloys is possible using ceramic molds. The ceramic molds produced at ACTech are especially heat-resistant and withstand temperatures of 1,800 °C and higher.

Which materials can be used at high temperatures?

Which materials can be used at high temperatures?

  • For operating temperatures of up to approx. 820 °C: ferritic SiMo cast irons, e.g. GJS-SiMo 40-6 

  • At higher temperatures to a maximum of 950 °C: austenitic cast irons, e.g. GJSA-XNiSiCr35-5-2, also known as D5S  

  • In the range up to 1,000 °C and slightly above: high-alloy, austenitic heat-resistant steels, e.g. 1.4849 up to 1,100 °C, or nickel-based alloys, e.g. Inconel 625 up to 1,050 °C

Is ACTech also developing new alloys?

Is ACTech also developing new alloys?

In cooperation with customers, development partners and suppliers, ACTech also develops new alloys. We of course also modify alloys by specifically adapting individual alloy components upon customer request. Properties of alloys can thus be targeted to their intended use.

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