1Cr13Al4, 0Cr25Al5, 0Cr23Al5, 0Cr21Al6, 0Cr21Al4, 0Cr21Al6Nb,0Cr27Al7Mo2Fe-Cr-Al qotishmasining bir turi oddiy materialdir.
FeCrAl qotishmasi yuqori qarshilik, past harorat qarshilik koeffitsienti, yuqori ish harorati, yaxshi oksidlanish va yuqori haroratda korroziyaga qarshi xususiyatlarga ega.
U sanoat pechlari, maishiy texnika, sanoat pechlari, metallurgiya, mashinasozlik, samolyotlar, avtomobilsozlik va isitish elementlari va qarshilik elementlarini ishlab chiqaradigan boshqa sohalarda keng qo'llaniladi.
| FeCrAl elektr isitish qotishma simining asosiy xarakteristikasi | ||||||||
| Qotishma nomenklaturasining ishlashi | 1Cr13Al4 | 0Cr25Al5 | 0Cr21Al6 | 0Cr23Al5 | 0Cr21Al4 | 0Cr21Al6Nb | 0Cr27Al7Mo2 | |
| Asosiy kimyoviy tarkibi | Cr | 12,0-15,0 | 23,0-26,0 | 19,0-22,0 | 20,5-23,5 | 18,0-21,0 | 21,0-23,0 | 26,5-27,8 |
| Al | 4,0-6,0 | 4,5-6,5 | 5,0-7,0 | 4.2-5.3 | 3,0-4,2 | 5,0-7,0 | 6,0-7,0 | |
| Re | qulay | qulay | qulay | qulay | qulay | qulay | qulay | |
| Fe | Dam olish | Dam olish | Dam olish | Dam olish | Dam olish | Dam olish | Dam olish | |
| Nb0.5 | Oy 1,8-2,2 | |||||||
| Maks. doimiy xizmat ko'rsatish harorati. (° C) | 950 | 1250 | 1250 | 1250 | 1100 | 1350 | 1400 | |
| 20º C da qarshilik (m Ō @ m) | 1.25 | 1.42 | 1.42 | 1.35 | 1.23 | 1.45 | 1.53 | |
| Zichlik (g/sm3) | 7.4 | 7.1 | 7.16 | 7.25 | 7.35 | 7.1 | 7.1 | |
| Issiqlik o'tkazuvchanligi (KJ/m@ h@ º C) | 52.7 | 46.1 | 63.2 | 60.2 | 46.9 | 46.1 | ||
| Chiziqlar kengayish koeffitsienti (a × 10-6/º C) | 15.4 | 16 | 14.7 | 15 | 13.5 | 16 | 16 | |
| Erish nuqtasi taxminan. (º C) | 1450 | 1500 | 1500 | 1500 | 1500 | 1510 | 1520 | |
| Kuchlanish kuchi (N/mm2) | 580-680 | 630-780 | 630-780 | 630-780 | 600-700 | 650-800 | 680-830 | |
| Yirilishdagi cho'zilish (%) | > 16 | > 12 | > 12 | > 12 | > 12 | > 12 | > 10 | |
| Hududning o'zgarishi (%) | 65-75 | 60-75 | 65-75 | 65-75 | 65-75 | 65-75 | 65-75 | |
| Qayta egilish chastotasi (F/R) | > 5 | > 5 | > 5 | > 5 | > 5 | > 5 | > 5 | |
| Qattiqlik (H. B.) | 200-260 | 200-260 | 200-260 | 200-260 | 200-260 | 200-260 | 200-260 | |
| uzluksiz xizmat vaqti (soat/ºC) | - | ≥ 80/1300 | ≥ 80/1300 | ≥ 80/1300 | ≥ 80/1250 | ≥ 50/1350 | ≥ 50/1350 | |
| Mikrografik tuzilish | Ferrit | Ferrit | Ferrit | Ferrit | Ferrit | Ferrit | Ferrit | |
| Magnit xususiyatlari | Magnit | Magnit | Magnit | Magnit | Magnit | Magnit | Magnit | |
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