Spheriodal graphite cast iron is also called as SG cast iron, or called as ductile iron. This cast iron has several material grades according to specific standard.
In European Standard EN1563:1997, SG iron has material grades tabulated below:
Mechanical Properties |
Grade |
Tensile Strength (RM)
N/mm2 min. |
0.2% proof stress (Rp0.2)
N/mm2 min. |
Elongation (A)
% min. |
EN-GJS-400-18-LT1) |
400 |
240 |
18 |
EN-GJS-400-18-RT2) |
400 |
250 |
18 |
EN-GJS-400-18 |
400 |
250 |
18 |
EN-GJS-400-15 |
400 |
250 |
15 |
EN-GJS-450-10 |
450 |
310 |
10 |
EN-GJS-500-7 |
500 |
320 |
7 |
EN-GJS-600-3 |
600 |
370 |
3 |
EN-GJS-700-2 |
700 |
420 |
2 |
EN-GJS-800-2 |
800 |
480 |
2 |
EN-GJS-900-2 |
900 |
600 |
2 |
(1) LT for low temperature |
(2) RT for room temperature |
Minimum impact resistance values measured on V-notched test pieces machined from separately cast samples. |
Grade |
Minimum impact resistance values (in J) |
Mean value from 3 sets |
Individual Value |
Temperature |
EN-GJS-400-18-LT1) |
12 |
9 |
-20+/-2 Celsius |
EN-GJS-400-18-RT2) |
14 |
11 |
23+/-5 Celsius |
|
