Ductile iron has much more impact and fatigue resistance, due to its nodular graphite inclusions.
Presence of graphite in spheroidal form, explains why this part of the group of materials is known as nodular cast iron or spherodial graphite iron, too. Nodular graphite structure are achieved mainly via magnesium treatment in production process.
Find below details related to ductile iron grades.
| MATERIAL GRADE EN 1563:2011 |
HB | Tensile Strength Rm (MPa) |
Yield Strength Re (MPa) |
Elongation A5 (%) |
|---|---|---|---|---|
| EN-GJS-400-18 LT EN-GJS-HB150 |
130-175 | 400 | 240 | 18 |
| EN-GJS-400-15 EN-GJS-HB155 |
135-180 | 400 | 250 | 15 |
| EN-GJS-400-10 EN-GJS-HB185 |
160-210 | 450 | 310 | 10 |
| EN-GJS-500-7 EN-GJS-HB200 |
170-230 | 500 | 320 | 7 |
| EN-GJS-600-3 EN-GJS-HB230 |
190-270 | 600 | 370 | 3 |
| EN-GJS-700-2 EN-GJS-HB265 |
225-305 | 700 | 420 | 2 |
| MATERIAL GRADE EN 1563:2011 |
HB | Norway NS11- |
Sweden ss-14- |
Denmark DS 11303 |
Germany DIN 1693 |
Finland SFS 2113.-75 |
England BS 2789,1973 |
USA ASTM A536 |
|---|---|---|---|---|---|---|---|---|
| EN-GJS-400-18 LT EN-GJS-HB150 |
130-175 | SJK 400.3 NS 11338 |
0717-02 | 717 | GGG 40.3 | GRP 370 | Grade 370/17 | 60-40-18 |
| EN-GJS-400-15 EN-GJS-HB155 |
135-180 | SJK 400 NS 11342 |
0717 | 716 | GGG 40 | GRP 400 | Grade 420/12 | 60-40-18 |
| EN-GJS-500-7 EN-GJS-HB200 |
170-230 | SJK 500 NS 11350 |
0727-02 | 727 | GGG 50 | GRP 500 | Grade 500/7 | 65-45-12 |
| EN-GJS-600-3 EN-GJS-HB230 |
190-270 | SJK 600 NS 11360 |
0732-03 | 707 | GGG 60 | GRP 600 | Grade 600/3 | 80-55-06 |
| EN-GJS-700-2 EN-GJS-HB265 |
225-305 | SJK 700 NS 11370 |
0737-01 | 708 | GGG 70 | GRP 700 | Grade 700/2 | 100-70-03 |
