Grey lamellar cast iron (GJL)
In grey iron, graphite is present in lamellar form, giving it excellent thermal conductivity, high vibration damping, and excellent castability and machinability. However, these same lamellae limit tensile strength and ductility compared to spheroidal iron.
Fonderie Palmieri produces grades from EN-GJL-200 to EN-GJL-350, used in compressors, electric motor stators, hydraulics, and components requiring dimensional stability and good surface hardenability.
EN-GJL-350
CHARACTERISTICS
Good thermal conductivity, excellent mechanical strength, vibration damping, wear resistance, dimensional stability over time, excellent hardenability.
APPLICATIONS
Stators, hydraulics, bearing housings.
HARDNESS
200 – 260HB
EN-GJL-300
CHARACTERISTICS
Good thermal conductivity, excellent mechanical strength, vibration damping, wear resistance, dimensional stability over time, excellent hardenability.
APPLICATIONS
Compressors, hydraulics, bearing housings.
HARDNESS
190 – 250HB
EN-GJL-250
CHARACTERISTICS
Good machinability, good thermal conductivity, good mechanical resistance, vibration damping.
APPLICATIONS
Compressors, internal combustion engines, general engineering, medium-thickness castings.
HARDNESS
170 – 220HB
EN-GJL-200
CHARACTERISTICS
Excellent machinability, good thermal conductivity, low mechanical strength, vibration damping.
APPLICATIONS
General engineering, thin-walled castings, pumps.
HARDNESS
140 – 200 HB
| EN 1563:2012 | ASTM A 48 | ASTM A 278 | SAE J431 | UNS | |
|---|---|---|---|---|---|
| EN-GJL-100 | 5.1100 | Class 15 | Class 15 | ||
| EN-GJL-150 | 5.1200 | Class 20 | Class 20 | ||
| Class 25 | Class 25 | G1800 | F10004 | ||
| EN-GJL-200 | 5.1300 | Class 30 | Class 30 | ||
| EN-GJL-250 | 5.1301 | Class 35 | Class 35 | G2500 | F10005 |
| Class 40 | Class 40 | ||||
| EN-GJL-300 | 5.1302 | Class 45 | Class 45 | G3000 | F10006 |
| EN-GJL-350 | 5.1303 | Class 50 | Class 50 | G3500 | F10007 |
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