1Cr13Al4, 0Cr25Al5, 0Cr23Al5, 0Cr21Al6, 0Cr21Al4, 0Cr21Al6Nb,0Cr27Al7Mo2Fe-Cr-Al qotishmasining bir xil oddiy materialidir.
FeCrAl qotishmasi yuqori qarshilik, past harorat qarshilik koeffitsienti, yuqori ish harorati, yuqori harorat ta'sirida yaxshi antioksidlanish va korroziyaga qarshi xususiyatlarga ega.
U sanoat pechlari, maishiy texnika, sanoat pechlari, metallurgiya, mashinasozlik, samolyotsozlik, avtomobilsozlik va isitish elementlari va qarshilik elementlarini ishlab chiqaradigan boshqa sohalarda keng qo'llaniladi.
| FeCrAl elektr isitish qotishma simining asosiy xususiyati | ||||||||
| 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 | Dushanba 1.8-2.2 | |||||||
| Maksimal uzluksiz xizmat ko'rsatish harorati (° C) | 950 | 1250 | 1250 | 1250 | 1100 | 1350-yil | 1400 | |
| 20ºC da qarshilik (μ Ω @ 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@ºC) | 52.7 | 46.1 | 63.2 | 60.2 | 46.9 | 46.1 | ||
| Chiziqlar kengayish koeffitsienti (α × 10-6/º C) | 15.4 | 16 | 14.7 | 15 | 13.5 | 16 | 16 | |
| Erish nuqtasi taxminan (ºC) | 1450-yil | 1500 | 1500 | 1500 | 1500 | 1510-yil | 1520-yil | |
| Cho'zilish kuchi (N/mm2) | 580-680 | 630-780 | 630-780 | 630-780 | 600-700 | 650-800 | 680-830 | |
| Yorilish paytidagi cho'zilish (%) | > 16 | > 12 | > 12 | > 12 | > 12 | > 12 | > 10 | |
| Maydonning o'zgarishi (%) | 65-75 | 60-75 | 65-75 | 65-75 | 65-75 | 65-75 | 65-75 | |
| Bükme chastotasini takrorlash (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 ko'rsatish 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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