Wayar aloi pemanasan rintangan
1) gred:NI70CR30,NI80CR20, NI60CR15, NI35CR20,NI30CR20
2) Spesifikasi: Dia. 0.02 ~ 12mm
Kawat aloi pemanasan rintangan, dawai elektrthermal, wayar pemanasan elektrik
Saiz: 0.02-12mm
Komposisi dan sifat kimia:
Sifat/gred | NICR 80/20 | NICR 70/30 | NICR 60/15 | NICR 35/20 | NICR 30/20 | |
Komposisi Kimia Utama (%) | Ni | Bal. | Bal. | 55.0-61.0 | 34.0-37.0 | 30.0-34.0 |
Cr | 20.0-23.0 | 28.0-31.0 | 15.0-18.0 | 18.0-21.0 | 18.0-21.0 | |
Fe | ≤ 1.0 | ≤ 1.0 | Bal. | Bal. | Bal. | |
Suhu kerja maksimum (ºC) | 1200 | 1250 | 1150 | 1100 | 1100 | |
Resistivity pada 20ºC (μ Ω · m) | 1.09 | 1.18 | 1.12 | 1.04 | 1.04 | |
Ketumpatan (g/cm3) | 8.4 | 8.1 | 8.2 | 7.9 | 7.9 | |
Kekonduksian terma (kj/m · h · ºC) | 60.3 | 45.2 | 45.2 | 43.8 | 43.8 | |
Pekali pengembangan haba (α × 10-6/ºC) | 18 | 17 | 17 | 19 | 19 | |
Titik lebur (ºC) | 1400 | 1380 | 1390 | 1390 | 1390 | |
Pemanjangan (%) | > 20 | > 20 | > 20 | > 20 | > 20 | |
Struktur mikrograf | Austenite | Austenite | Austenite | Austenite | Austenite | |
Harta magnetik | nonmagnetic | nonmagnetic | nonmagnetic | nonmagnetic | nonmagnetic |