GS700-2 is a high material grade of ductile iron in Italy standard UNI 4544. It is also known as Grade 700-2 (ISO 1083).
This material grade is also equal to QT700-2 (GB 1348), 100-70-03 (ASTM A536), GGG70 (DIN 1693), EN-GJS-700-2 (EN 1563), FCD700 (JIS G5502), 700/2 (BS 2789), etc.
Chemical Components of UNI 4544 GS700-2 Ductile Cast Iron
C % |
Si % |
Mn % |
P % |
S % |
Mg % |
Cu % |
Sn % |
3.65-3.90 |
1.70-1.90 |
0.3-0.5 |
<0.06 |
<0.03 |
0.035-0.050 |
0.30-0.40 |
0.03-0.06 |
This range can not be taken as the standard of inspection, unless there is special requirement. All foundries could adjust their chemical composition as long as they could meet the mechanical requirements of standards.
The mechanical and physical properties of UNI 4544 GS700-2 ductile cast iron
Tensile strength |
Rm |
Mpa |
700 |
Yield limit |
Rp0,2 |
Mpa |
440 |
Elongation |
A |
% |
2 |
Hardness |
BHN |
|
229-302 |
Compression strength |
|
Mpa |
1000 |
Stress modulus |
E |
Mpa |
176 |
Density |
ρ |
Kg/m3 |
7200 |
Thermal conductivity |
λt |
W.m-1.K-1 |
31,1 |
Brittle failure resistance |
K1c |
MPa.m0,5 |
15 |
Equivalence |
kgf/mm2 |
|
71.4 |
The tensile strength and elongation are the key inspection standard for qualification. Buyers could judge unqualified castings according to these two parameters. Hardness can not be taken as an quality evaluation data unless you have special requirement.
Characteristics and application for UNI 4544 GS700-2 ductile cast iron
UNI 4544 GS700-2 ductile iron has the characteristics of high strength, wear resistance and low toughness (low plasticity). It is suitable for high strength parts, such as crankshafts, camshafts, partial grinders, milling machines, spindles of lathes, tooth shafts of ball mills, spindles of small hydro turbines for diesel and gasoline engines. |
