Cast Iron with Nodular Graphite Unalloyed and Low Alloy Grades – DIN 1693 Part 1:
Cast iron with nodular graphite (GGG) is an iron carbon casting material having the carbon component present as graphite which exists almost exclusively in a largely nodular form.
1. Properties and analysis
| Material N° | C | Si | Mn | Cu | P max | Tensile strength [N/mm²] | Yield point [N/mm²] | Elong. [%] | Brinell hardness | Structure | |
| GGG40 | 0.7040 | 3,5-4 | 2,30-2,80 | 0,3 max. | 0,05 max. | 420 | 280 | 15 | 135-185 | Ferritic | |
| GGG50 | 0.7050 | 3,5-3,8 | 2,20-2,60 | 0,5 max. | 0,05 max. | 500 | 350 | 7 | 170-220 | Ferritic/Perlitic | |
| GGG60 | 0.7060 | 3,4-3,60 | 2,00-2,50 | 0,30-0,80 | 0,20-0,80 | 0,05 max. | 600 | 400 | 3 | 200-250 | Perlitic/Ferritic |
| GGG70 | 0.7070 | 3,20-3,40 | 1,80-2,40 | 0,30-0,80 | 0,20-0,80 | 0,05 max. | 700 | 450 | 2 | 235-285 | Perlitic |
Fly Wheel
The magnesium treatment for nodularisation is done through NiMg or through wire-injection of FeSiMg GGG 40.3 and GGG 35.3 guaranty impact values (14 Joules at -20°C)
2. Application
Machine parts for which the combination of good castibility and elasticity is required.
Pls download the standard of DIN 1693, The above chemistry component only for reference of foundry.