| CGI | compacted graphite iron |
| CG | compacted graphite |
| SI | spheroidal graphite |
| AC | as cast |
| HT | heat treated |
| TMF | thermomechanical fatigue |
| FE | finite element |
| M–G | metal–graphite |
| ε | strain |
| h | trapezium height |
| ΔH | difference in materials‘ hardness |
| σc | critical stress normal to the M–G interface |
| LP | lamellar pearlite |
| SG | spiky graphite |
| NSG | non-spiky graphite |
| F | ferrite |
| STDEV | standard deviation |
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