SOLUTIONS

1) Grey cast iron

EN-GJL-200
EN-GJL - 250
EN-GJL - 300
EN-GJL - 350

2) Ductile (spheroidal graphite) iron

EN-GJS-400-15
EN-GJS-400-18
EN-GJS-450-10
EN-GJS-500-7
EN-GJS-600-3
EN-GJS-700-2

3) Solid-solution strengthened ductile iron

EN-GJS-500-14
EN-GJS-600-10

4) Compacted graphite iron (CGI) / vermicular graphite iron

EN-GJV-450

Ductile iron (EN-GJS)

High ductility and great tensile strength

Ductile iron shows high ductility together with high strength, which is partly even higher than ductile and steel cast iron with identical ductility values. Its abrasion resistance can be further improved by alloying.

The root of these diverse properties lies in the structure of the iron-carbon alloy: Graphite exhibits a ball-shape in the iron matrix. Thus, ductile iron is also referred to as spheroidal graphite cast iron.

Applications: braking, pneumatic machine pistons, melting pots, compressor pistons, pump housings, tractor parts, agriculture machine parts, valves, airplane engine parts, moulds, machine parts, crank mills.

Grey cast iron (EN-GJL)

High resistance to abrasion with good dampening characteristics

Grey cast iron is the most cast iron type. It combines a high abrasion resistance with a good castability. Also the material is easy to process and exhibits very good damping capacity under mechanic vibrations.

The reasons for these physical characteristics lie in the structure of the cast iron. Carbon in grey cast iron precipitates in the form of flakes, which form three-dimensional leaf-like structures. Yet, this flake graphite is also responsible for the very low ductility of the material.

Applications: tubes, bars, machine parts, tires, pumps, workbenches, flywheels, gear boxes, motor blocks, machine parts, pumps, compressor parts, petrol tubes, gears, manifolds, valves, pressure parts, rams.

SOLID SOLUTION STRENGTHENED FERRITIC DUCTILE IRON (SSF-DI)

Solid solution strengthened ductile irons (SSF-DI) are used for applications where high yield strength and ducility are needed.

Compared to the conventional ferritic/pearlitic grades, SSF-DI grades exhibit significantly lower variations in hardness due to their single-phase ferritic matrix. At the same level of hardness, this reduction in hardness variation, combined with negligible pearlite content, results in improved machinability.

Table mechanical values

 Source: Grey cast acc. EN 1561, Spheroidal graphite iron acc. EN 1563