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Cast iron with lamellar graphite
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Cast iron with lamellar graphite
| Cast type |
Cast iron with lamellar graphite |
| Material No. |
EN-JL-1040 |
| US standard (AISI) |
No. 25 B |
| DIN EN 10027-2 |
5.1301 |
| Abbreviation |
EN-GJL-250 |
| Old designation |
GG-25
DIN 1561 |
Composition
[%] |
C: 3.20 – 3.50
Si: 2.50 – 2.70
Mn: 0.50 – 0.80
P: 0.1 – 0.2
S: 0.1
Cu: 0.1 – 0.6 |
| Density [g/cm³] |
7.20 |
R0.2 N/mm²
Yield strength |
- |
0.1% elongation limit
Rp0.1 N/mm² |
165 – 228 |
Tensile strength
Rm [N/mm²] |
250 – 350 |
Brinell hardness HB30
Sample <30 mm |
190 – 230 |
| Elongation after fracture A% |
0.8 – 0.3 |
| Elastic modulus E kN/mm² |
103 – 118 |
| Compressive strength Sdb N/mm² |
840 |
| Workability |
Very good |
| Weldability |
Limited, can be welded with special electrodes |
| Compressive strength |
Good |
| Emergency-running properties |
Good |
| Thermal conductivity |
Good |
| Vibration-absorbing properties |
Good |
| Castability |
Very good |
| Other properties |
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| Structure |
Pearlitic |
| Main uses |
Machine tools, gearboxes, machine beds
Recommended wall thicknesses:
up to 30 mm, compressors, hydraulic parts, pumps parts and fitting parts subject to excessive stress, grid plates, subplates |
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| This information is for reference only; we do not assume any liability for its accuracy. The properties of steel materials are highly dependent on their thermal and/or mechanical treatment. |
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