Daktil ain i gat ol ain, kabon, na silikon i stap insait long en, em i gat wanpela marasin bilong kamapim sferoid i go insait long ain ol i bin tanim, na kabon i save kamap pastaim olsem sferik grafait, na dispela i mekim na ain i kamap strong bilong daktil ain{{1} Konvensenel prodaksen proses bilong daunim low-sulaten i save putim liklik hap magnesium i go insait long low-sulaten i go insait long low-sulaten i go insait long en, em i save putim liklik mak bilong magnesium i go long magnesium i go insait long low-sulaten i go insait long low-sulaten i go insait long low-sulaten i bin helpim long putim liklik hap magnesium i go long magnesium i go insait long low-sulaten i bin kamap long rot bilong mekim wok bilong magil i go long low-sulaten i go insait bilong ol karbid, silikon i mas putim tu long daunim dispela efek{{4} Dispela tritmen i kamapim ol grafit foming i kamapim ol sferik seip{{5} I no olsem grei kast ain, daktil ain i no kamapim ol yutektik koloni long taim bilong solidifikesen proses{{6} bilong ol wel-fome bilong grafit i olsem 1{9}}0} bilong ol grafit sfera.
| Mekanikal samting na klasifikesen bilong feritik-pearlitik daktil ain | ||||||
| gret bilong ol samting | Tensil strong R/mpa Bikpela long o wankain olsem |
Kondisenel yield strong R,o.2/mpa i winim o wankain olsem |
Elongasen bihain long bruk A(%) Bikpela long o wankain olsem |
HBW |
tiknes bilong wol /mm |
Bikpela straksa |
| QT350-22 | 350 | 220 | 22 | I no winim o wankain olsem 160 | I no winim o wankain olsem 30 | Ferrit |
| QT400-18 | 400 | 250 | 18 | 130-175 | I no winim o wankain olsem 30 | Ferrit |
| QT400-15 | 400 | 250 | 15 | 135-180 | I no winim o wankain olsem 30 | Ferrit |
| QT450-10 | 450 | 310 | 10 | 160~210 | I no winim o wankain olsem 30 | Ferrit |
| QTS00-7 | 500 | 320 | 7 | 170~230 | I no winim o wankain olsem 30 | Feri + perlite |
| QT550-5 | 550 | 350 | 5 | 180-250 | I no winim o wankain olsem 30 | Feri + perlite |
| QT600-3 | 600 | 370 | 3 | 190-270 | I no winim o wankain olsem 30 | Pearlite + ferit |
| QT700-2 | 700 | 420 | 2 | 225-305 | I no winim o wankain olsem 30 | Perlite |
| QT800-2 | 800 | 480 | 2 | 245-335 | I no winim o wankain olsem 30 | Pearlite o sorbait |
| QT900-2 | 900 | 600 | 2 | 280-360 | I no winim o wankain olsem 30 | Ol martensait o fleksen i gat tempera Stinit + sorbait |




