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DIN 1693 GGG70 has a pearlitic structure with higher mechanical properties than those of GGG50 and GGG60.
This will result in better abrasion resistance. In spite of the high hardness, this material is reasonably easy to machine and the surface can be finished to a high standard.
DIN 1693 GGG70 ductile cast iron is suitable for many applications where high strength and a fully pearlitic base structure are required; e.g. cast press and stamping machine dies, highly stressed machine components, toothed wheels, running wheels and crankshafts.
The Chemical Properties of DIN 1693 GGG70 ductile cast iron
No any requirement about chemistry in the DIN 1693 standard, but our Dandong Foundry will suggest the chemistry as our experience in casting industry:
Chemical composition in % for DIN 1693 GGG70 ductile cast iron
|
C |
Si |
Mn |
S |
P |
Mg |
RE |
3.70~4.00 |
2.30~2.60 |
0.50~0.80 |
≤0.02 |
≤0.08 |
0.035~0.065 |
0.035~0.065 |
The Physical and Mechanical Properties of DIN 1693 GGG70 ductile cast iron
Material Property |
Values |
Melting Temperature |
1150 - 1250 ℃ |
Service Temperature |
-100 - 350 ℃ |
Density |
7.1 - 7.3 g/cm³ |
Young's Modulus, E |
177 - 185 GPa |
Yield Strength, σy |
420 MPa |
Tensile Strength, σts |
700 MPa |
Poisson's Ratio |
0.21 - 0.26 |
Fracture Toughness, KIC (plane-strain) |
22 - 54 MPa/√m |
Thermal Conductivity, λ |
25 - 42 W/m.K |
Thermal Expansion, α |
10 - 13 E-6/C |
Production Energy |
16.4 - 18.2 MJ/kg |
CO2 Emission |
1 - 1.1 kg/kg |
Fire Resistance |
Excellent |
Fresh Water Resistance |
Good |
Salt Water Resistance |
Average |
Sunlight/UV Resistance |
Excellent |
Wear Resistance |
Excellent |
Equivalent Grades for DIN 1693 GGG70 ductile cast iron:
Country |
Standard |
Material Grade |
ISO |
ISO 1083 |
GRADE 700-2 |
China |
GB 1348 |
QT700-2 |
USA |
ASTM A536 |
100-70-03 |
Germany, Austria |
DIN 1693 |
GGG70 |
European |
EN 1563 |
EN-GJS-700-2 |
Japan |
JIS G5502 |
FCD700 |
Italy |
UNI 4544 |
GS700-2 |
France |
NF A32-201 |
FGS700-2 |
UK |
BS 2789 |
700/2 |
Spain |
UNF |
FGE70-2 |
Belgium |
NBN 830-02 |
FNG70-2 |
Australia |
AS 1831 |
GRADE 700-2 |
Sweden |
SS 14 07 |
0737-01 |
Norway |
NS11 301 |
SJK-700 |
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