DIN 1693 GGG50 is a material with a predominantly ferritic and pearlitic base structure.
It offers good tensile strength and a satisfactorily high yield point combined with good toughness. GGG50 is easily machinable and can be used up to about 450 °C.
In comparison to GGG40, this material is the ideal choice for applications where the level of wear and tear is higher, such as running wheels and wheel hubs.
The Chemical Properties of DIN 1693 GGG50 ductile cast iron
Chemistry requirements are not specified in the DIN 1693 standard. The iron foundries could adjust the chemical components according to their experience and production conditions, as long as they could meet the mechanical properties. The normal chemical composition for this grade is as the following:
Chemical composition in % for DIN 1693 GGG50 ductile cast iron |
C |
Si |
Mn |
P |
S |
Mg |
RE |
3.60~3.80 |
2.50~2.90 |
0.60 |
≤0.08 |
≤0.025 |
0.03-0.05 |
0.03-0.05 |
The Mechanical Properties of DIN 1693 GGG50 ductile cast iron
| Tensile strength |
Rm |
500 |
[N/mm2] |
Yield point |
σ 0.2B |
320 |
[N/mm2] |
Elongation |
A |
7 |
[%] |
Brinell hardness |
HB30 |
170-230 |
|
Elasticity modulus |
Eo |
169 |
[kN/ mm2] |
Notch impact strength at 20 °C. |
Av |
3.5 |
[Joule] |
Compressive strength |
σ dB |
900 |
[N/mm2] |
Shear stress |
σaB |
450 |
[N/mm2] |
Ferrite content |
– |
40-90 |
[%] |
Nodularity type I+II |
– |
min. 85 |
[%] |
Equivalent Grades for DIN 1693 GGG50 ductile cast iron:
| Country |
Standard |
Material Grade |
ISO |
ISO 1083 |
GRADE 500-7 |
China |
GB 1348 |
QT500-7 |
USA |
ASTM A536 |
70-50-05 |
Germany/Austria |
DIN 1693 |
GGG50 |
European |
EN 1563 |
EN-GJS-500-7 |
Japan |
JIS G5502 |
FCD500 |
Italy |
UNI 4544 |
GS500-7 |
France |
NF A32-201 |
FGS500-7 |
UK |
BS 2789 |
500/7 |
Spain |
UNF |
FGE50-7 |
Belgium |
NBN 830-02 |
FNG50-7 |
Australia |
AS 1831 |
GRADE 500-7 |
Sweden |
SS 14 07 |
0727-02 |
Norway |
NS11 301 |
SJK-500 |
|
