Simintin simintin gyare-gyaren ƙarfe ne na ƙarfe-carbon gami da juzu'i mai yawa na carbon fiye da 2.11%. Ana samun baƙin ƙarfen simintin gyaran ƙarfe ta hanyar narke baƙin ƙarfe a cikin tanderun, ƙara ferroalloy, tarkace karfe, da komawa cikin tanderun don daidaita abun da ke ciki.Karfe mai launin tokada ductile iron su ne simintin ƙarfe biyu da aka fi amfani da su don samar da simintin gyare-gyare.
Simintin ƙarfe na simintin ƙarfe na China an fi bayyanawa kuma ana bambanta su ta hanyar kayan aikin injiniya. Saitin lambobi na farko a cikin sa yana nuna ƙaramin ƙarfin ƙarfi (a cikin MPa), saitin lambobi na biyu (idan akwai) yana nuna ƙaramar haɓakawa a lokacin hutu (%). Saitin lambobi biyu an raba su da dash "-".
Harafin Turanci na baƙin ƙarfe mai launin toka shine HT, inda H shine harafin farko na Pinyin Sinanci (Hui Se) ma'ana launin toka; T shine harafin farko na Pinyin Sinanci (Tie) na baƙin ƙarfe. Lambobin da ke cikin makin ƙarfe mai launin toka na kasar Sin suna nuna ƙaramin ƙarfin ƙarfi (MPa). Misali, HT250 yana wakiltar baƙin ƙarfe mai launin toka tare da ƙaramin ƙarfi na 250 MPa.
| Kwatanta Iron Cast Grey daga Kasashe Daban-daban | ||||||||||
| A'a. | China | Japan | Amurka | ISO | Jamus | Faransa | Rasha | Birtaniya | ||
| GB | JIS | ASTM | UNS | DIN | W-Nr. | Farashin EN | tafi | BS | ||
| 1 | HT100 | Farashin FC100 | GG10 | 0.6010 | EN-GJL-100 | cin 10 | Darasi na 100 | |||
| 2 | HT150 | Farashin FC150 | 150/~ Na 20 | F11401 | ISO 185/JL/150 | GG15 | 0.6015 | EN-GJL-150 | cin 15 | Darasi na 150 |
| 3 | HT200 | FC200 | 200/~ No.30 | F12101 | ISO 185/JL/200 | GG20 | 0.6020 | EN-GJL-200 | 18 gram 20 gram 21 | Darasi na 180 Darasi na 220 |
| 4 | HT250 | Farashin FC250 | 250/~ No.35 | F12401 | ISO 185/JL/250 | GG25 | 0.6025 | EN-GJL-250 | 24g 25 | Darasi na 260 |
| 5 | HT300 | FC300 | 300/~ Na 45 | F13101 | ISO 185/JL/300 | GG30 | 0.6030 | EN-GJL-300 | 30 ku | Darasi na 300 |
| 6 | HT350 | Farashin FC350 | 350/~ No.50 | F13501 | ISO 185/JL/350 | GG35 | 0.6035 | EN-GJL-350 | cin 35 | Darasi na 350 |
Harafin Turanci nairin ductileQT ne, inda Q shine harafin farko na Pinyin Sinanci (Qiumo) na graphite spheroidal na kasar Sin; T shine harafin farko na Pinyin Sinanci (Tie) na baƙin ƙarfe. Akwai nau'ikan lambobi guda biyu a cikin ma'aunin ƙarfe na ductile na kasar Sin. Saitin lambobi na farko yana wakiltar ƙaramin ƙarfin ƙarfi (MPa), saitin lambobi na biyu yana wakiltar tsawo bayan karaya (%). Saitin lambobi biyu an raba su da dash "-". Alal misali, QT400-18 yana wakiltar baƙin ƙarfe mai ductile tare da ƙaramin ƙarfi na 480 MPa da ƙananan haɓaka na 18%.
| Matsayin ƙarfe na ƙarfe daga ƙasashe daban-daban | ||||||||||
| A'a. | China | Japan | Amurka | ISO | Jamusanci | Faransa | Rasha гост | UK BS | ||
| GB | JIS | ASTM | UNS | DIN | W-Nr. | NF | ||||
| 1 | Saukewa: FCD350-22 | - | - | 350-22 | - | - | - | BCH35 | 350/22 | |
| 2 | QT400-15 | Saukewa: FCD400-15 | - | - | 400-15 | GG-40 | 0.7040 | Saukewa: EN-GJS-400-15 | BCH40 | 370/17 |
| 3 | QT400-18 | Saukewa: FCD400-18 | 60-40-18 | F32800 | 400-18 | - | - | EN-GJS-400-18 | - | 400/18 |
| 4 | QT450-10 | Saukewa: FCD450-10 | 65-45-12 | F33100 | 450-10 | - | - | Saukewa: EN-GJS-450-10 | BCH45 | 450/10 |
| 5 | QT500-7 | Saukewa: FCD500-7 | 80-55-6 | F33800 | 500-7 | GG-50 | 0.7050 | Saukewa: EN-GJS-500-7 | BCH50 | 500/7 |
| 6 | QT600-3 | Saukewa: FCD600-3 | ≈80-55-06 ≈100-70-03 | Saukewa: F3300F34800 | 600-3 | GG-60 | 0.7060 | Saukewa: EN-GJS-600-3 | BCH60 | 600/3 |
| 7 | QT700-2 | Saukewa: FCD700-2 | 100-70-03 | F34800 | 700-2 | GG-70 | 0.7070 | Saukewa: EN-GJS-700-2 | BCH70 | 700/2 |
| 8 | QT800-2 | Saukewa: FCD800-2 | 120-90-02 | F36200 | 800-2 | GG-80 | 0.7080 | Saukewa: EN-GJS-800-2 | BCH80 | 800/2 |
| 8 | QT900-2 | 120-90-02 | F36200 | 800-2 | GG-80 | 0.7080 | EN-GJS-900-2 | ≈ 100 | 900/2 | |
| Grey Iron Comparison | Microstructure (Kasuwancin Juzu'i) (ma) | |||
| China (GB/T 9439) | ISO 185 | ASTM A48/A48M | EN 1561 | Tsarin Matrix |
| HT100 (HT10-26) | 100 | Saukewa: 20F11401 | EN-GJL-100 | Pearlite: 30-70 s, m flakes; Ferrite: 30-70; Binary Phosphorus Eutectic: ＜7） |
| HT150 (HT15-33) | 150 | No.25A F11701 | EN-GJL-150 | Pearlite: 40-90 s, matsakaici m flakes; Ferrite: 10-60; Binary Phosphorus Eutectic: ＜7） |
| HT200 (HT20-40) | 200 | No.30A F12101 | EN-GJL-200 | Pearlite: ：95％, matsakaicin flakes; Ferrite # 5; Binary Phosphorus Eutectic |
| HT250 (HT25-47) | 250 | No.35A F12401 No.40A F12801 | EN-GJL-250 | Pearlite: ：98％ matsakaicin bakin ciki flakes; Binary Phosphorus Eutectic: ＜2） |
| HT300 (HT30-54) | 300 | No.45A F13301 | EN-GJL-300 | Pearlite: ：98％ matsakaicin bakin ciki flakes; Binary Phosphorus Eutectic: ＜2） |
| HT350 (HT35-61) | 350 | Saukewa: F13501 | EN-GJL-350 | Pearlite: ：98％ matsakaicin bakin ciki flakes; Binary Phosphorus Eutectic: 1. |
| Kwatancen Ƙarfe na Ductile | Sinadarin Halitta (（）) | Tsarin Matrix | |||||||||
| GB/T 1348-1988 | ASTM A536-84 (2004) | EN 1563:-1997 | C | Si | Mn | P | S | Mg | Re | wasu | |
| QT400-18 | 60-40-18① F32800 | Saukewa: GJS-400-18JS1020 | 3.6-3.8 | 2.3-2.7 | 0.5 | 0.08 | 0.025 | 0.03-0.05 | 0.02-0.03 | - | Annealed Ferrite |
| QT400-15 | 60-42-10F32900 | Saukewa: GJS-400-15JS1030 | 3.5-3.6 | 3.0-3.2 | 0.5 | 0.07 | 0.02 | 0.04 | 0.02 | - | Annealed Ferrite |
| QT450-10 | 65-45-12 F33100 | Saukewa: GJS-450-10JS1040 | 3.4-3.9 | 2.7-3.0 | 0.2-0.5 | 0.07 | 0.03 | 0.06-0.1 | 0.03-0.1 | - | Annealed Ferrite |
| QT500-7 | 70-50-05 | Saukewa: GJS-500-7JS1050 | 3.6-3.8 | 2.5-2.9 | 0.6 | 0.08 | 0.025 | 0.03-0.05 | 0.03-0.05 | - | Pearlite + Ferrite |
| QT600-3 | 80-60-03② F34100 | Saukewa: GJS-600-3JS1060 | 3.6-3.8 | 2.0-2.4 | 0.5-0.7 | 0.08 | 0.025 | 0.035-0.05 | 0.025-0.045 | - | Pearlite Normalized |
| QT700-2 | 100-70-03F34800 | Saukewa: GJS-700-2JS1070 | 3.7-4.0 | 2.3-2.6 | 0.5-0.8 | 0.08 | 0.02 | 0.035-0.065 | 0.035-0.065 | Mo0.15-0.4 Cu0.4-0.8 | Mix Microstructure |
| QT800-2 | - | Saukewa: GJS-800-2JS1080 | 3.7-4.0 | 2.5 | 0.5 | 0.07 | 0.03 | - | - | Mo0.39 Ku0.82 | Mix Microstructure |
| QT900-2 | 120-90-02F36200 | Saukewa: GJS-900-2JS1090 | 3.5-3.7 | 2.7-3.0 | 0.5 | 0.08 | 0.025 | 0.03-0.05 | 0.025-0.045 | Mo0.15-0.25 Cu0.5-0.7 | Ƙananan Bainite |
| ① daga ASTM A716-2003. ② daga ASTM A476/A476M-2000. | |||||||||||
Lokacin aikawa: Agusta-13-2022