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Cast iron with lamellar graphite	go back
Catalog / Service Material overview [-en-] Casting Cast iron with lamellar graphite

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
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

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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