Grey Cast Iron
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OUR MATERIAL RANGE:

Lamellar Graphite Cast Iron (Grey Cast Iron) in Compliance with DIN Standards

Lamellar graphite cast iron is easy to temper and simple to machine. Grey cast iron is characterized by its above-average resistance to wear and its wall thickness insensitivity, outstanding damping properties and high strength without edge hardness. It is an excellent material in terms of both form and function.

Tensile properties in different wall thicknesses

Material Relevant wall thickness mm Tensile strength
in cast
samples
Tensile strength
expected values
in the casting
Brinell hardness
HB 30
Compressive
strength
σdB
more than up to Rm = N/mm2 Rm = N/mm2 min. max. N/mm2
GG-20
EN-GJL-200
2,5 5 230 190 275 720
5 10 205 170 260
10 20 180 150 230
20 40 170 155 135 210
40 80* 150 130 120 195
GG-25
EN-GJL-250
5 10 250 200 275 840
10 20 225 180 255
20 40 210 195 160 235
40 80* 190 170 145 215
GG-30
EN-GJL-300
10 20 270 200 275 960
20 40 250 240 180 255
40 80* 220 210 165 235

* 30 mm test bar

Material Material number Material description
to the European Standard
DIN EN 1561
Material
number
Values in the separately
cast test bar
Density ρ
Tensile strength*
Rm = N/mm2
Brinell hardness
HB 30
g/ccm
GG-20 0.6020 EN-GJL-200 EN-JL-1030 200-300 180-220 7,15
0.6025 EN-GJL-250 EN-JL-1040 250-350 190-230 7,15
0.6030 EN-GJL-300 EN-JL-1050 300-400 200-240 7,25

* 30 mm test bar