FeCrAlyuqori qarshilik va elektr isitish qotishmasi
FeCrAl qarshilik va isitish qotishmasi yuqori qarshilik, past haroratli elektr qarshilik koeffitsienti, yuqori ish harorati, yuqori haroratda yaxshi korroziyaga chidamlilik, shuningdek, past narx.
U sanoat elektr pechlari, maishiy elektr jihozlari va uzoq infraqizil nurlanish qurilmalarida keng qo'llaniladi.
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. element (ºC) | 950 | 1250 | 1250 | 1250 | 1100 | 1350 | 1400 | |
20ºC da qarshilik (mk·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·s·ºC) | 52.7 | 46.1 | 63.2 | 60.2 | 46.9 | 46.1 | 45.2 | |
Chiziqlar koeffitsienti kengayish (a×10-6/ºC) | 15.4 | 16 | 14.7 | 15 | 13.5 | 16 | 16 | |
Erish nuqtasi (taxminan) (ºC) | 1450 | 1500 | 150 | 1500 | 1500 | 1510 | 1520 | |
Kuchlanish kuchi (N/mm2) | 580-680 | 630-780 | 630-780 | 630-780 | 600-700 | 650-800 | 680-830 | |
Yoriqdagi cho'zilish (%) | >16 | >12 | >12 | >12 | >12 | >12 | >10 | |
Hududning o'zgarishi (%) | 65-75 | 65-75 | 65-75 | 65-75 | 65-75 | 65-75 | 65-75 | |
Bükme chastotasi (F/R) | >5 | >5 | >5 | >5 | >5 | >5 | >5 | |
Qattiqlik (HB) | 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 |
Dumaloq sim: diametri 0,05 mm-10,0 mm
Yassi sim: qalinligi 0,2 mm-1,0 mm, kengligi 0,08 mm-40,0 mm