Alkrothal 720 No.1 JR FeCrAl Alloy for brake resistor
Alkrothal 720 Nha.1 JRye brake resistor
Typical applications for Alkrothal 720 are in rheostats, braking resistors, etc. Inoshandiswawo semagetsi ekudziya zvinhu mumaindasitiri ekushandisa.
Alkrothal 720 is a ferritic iron-chromium-aluminium alloy (FeCrAl alloy) inoshandiswa patembiricha inosvika 1000°C (1830°F).
Nominal Analysis
| Cr | Al | Fe |
| 12.0~15.0 | 4.0~6.0 | Balance |
Mechanical Properties
| Max Continuous Service Temperature: Resisivity 20ºC: Density: Thermal Conductivity: Coefficient of Thermal Expansion: Melting Point: Elongation: Chimiro cheMicrographic: Magnetic Property: | 950ºC 1.25ohm mm2/m 7.40g/cm3 52.7 KJ/m·h·ºC 15.4×10-6/ºC (20ºC~1000ºC) 1450ºC Zvishoma 16% Ferrite magnetic |
Kukura: Ukobvu 0.01-7mm, hupamhi 0.5-1000mm
Pamusoro: BA, 2B
Kuoma: Yakapfava, Hafu yakaoma, yakaoma
Yakashandiswa zvakanyanya senge hombe yemagetsi brake resistor uye choto chekudziya zvinhu.
Ine simba shoma rinopisa pane Tophet alloys asi yakanyanya kunyungudika.
Iyo kambani Shanghai TANKII ALLOY MATERIAL Co., Ltd.
FECRAL UYE ALCHROME Alloy PRODUCER muChina, ANYANYA KUNYANYA MUNYIKA.
Isu tinogadzirawo pazasi mamaki:
0Cr15Al5 uye 0Cr19Al3, nezvimwewo.
| Kemikari Inoumbwa uye Hunhu Huru hweFe-Cr-Al Resistance Alloy | ||||||||
| Properties Grade | 1Cr13Al4 | 0Cr25Al5 | 0Cr21Al6 | 0Cr23Al5 | 0Cr21Al4 | 0Cr21Al6Nb | 0Cr27Al7Mo2 | |
| Main Chemical Composition (%) | Cr | 12.0-15.0 | 23.0-26.0 | 19.0-22.0 | 22.5-24.5 | 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 | 4.2-5.0 | 3.0-4.2 | 5.0-7.0 | 6.0-7.0 | |
| Re | mukana | mukana | mukana | mukana | mukana | mukana | mukana | |
| Fe | Bal. | Bal. | Bal. | Bal. | Bal. | Bal. | Bal. | |
| Nb0.5 | Mo1.8-2.2 | |||||||
| Max Kuenderera mberi Sevhisi Temperature(oC) | 950 | 1250 | 1250 | 1250 | 1100 | 1350 | 1400 | |
| Resisivity 20oC (Ωmm2/m) | 1.25 ±0.08 | 1.42 ±0.06 | 1.42 ±0.07 | 1.35 ±0.07 | 1.23 ±0.07 | 1.45 ±0.07 | 1.53 ±0.07 | |
| Density(g/cm3) | 7.4 | 7.1 | 7.16 | 7.25 | 7.35 | 7.1 | 7.1 | |
| Thermal Conductivity | 52.7 | 46.1 | 63.2 | 60.2 | 46.9 | 46.1 | 45.2 | |
| (KJ/m@h@oC) | ||||||||
| Coefficient of Thermal Expansion(α×10-6/oC) | 15.4 | 16 | 14.7 | 15 | 13.5 | 16 | 16 | |
| Yakasvika Melting Point (oC) | 1450 | 1500 | 1500 | 1500 | 1500 | 1510 | 1520 | |
| Kusimba Kwesimba(N/mm2) | 580-680 | 630-780 | 630-780 | 630-780 | 600-700 | 650-800 | 680-830 | |
| Elongation(%) | >16 | >12 | >12 | >12 | >12 | >12 | >10 | |
| Chikamu Kusiyana | 65-75 | 60-75 | 65-75 | 65-75 | 65-75 | 65-75 | 65-75 | |
| Shrink Rate (%) | ||||||||
| Kasingaperi Bend Frequency(F/R) | >5 | >5 | >5 | >5 | >5 | >5 | >5 | |
| Kuoma (HB) | 200-260 | 200-260 | 200-260 | 200-260 | 200-260 | 200-260 | 200-260 | |
| Nguva Yebasa Inoenderera | no | ≥80/1300 | ≥80/1300 | ≥80/1300 | ≥80/1250 | ≥50/1350 | ≥50/1350 | |
| Micrographic Structure | Ferrite | Ferrite | Ferrite | Ferrite | Ferrite | Ferrite | Ferrite | |
| Magnetic Property | Magnetic | Magnetic | Magnetic | Magnetic | Magnetic | Magnetic | Magnetic | |
