Ohmalloy Material Co.,Ltd
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industrial electric furnace high temperature resistance wire good corrosion resistance
UALLOY139 is a iron-chromium-aluminium alloy (FeCrAl alloy) characterized by high resistance, low coefficient of electric resistance, high operating temperature, good corrosion resistance under high temperature.It is suitable for use at temperatures up to 1300°C.
Typical applications for UALLOY139 are used in industrial electric furnace, electric ceramic cooktop.
Normal composition%
| C | P | S | Mn | Si | Cr | Ni | Al | Fe | Other |
| Max | |||||||||
| 0.04 | 0.02 | 0.015 | 0.50 | Max 0.4 | 20.0-21.0 | Max 0.10 | 4.8-6 | Bal. | / |
| Density (g/cm3) | 7.10 |
| Electrical resistivity at 20℃(Ωmm2/m) | 1.39 |
| Conductivity coefficient at 20℃ (WmK) | 13 |
| Tensile Strength(Mpa) | 637-784 |
| Elongation | Min 16% |
| Harness(HB) | 200-260 |
| Section Variation Shrink Rate | 65-75% |
| Repeatedly Bend Frequency | Min 5 times |
| Coefficient of thermal expansion | |
| Temperature | Coefficient of Thermal Expansion x10-6/℃ |
| 20 ℃- 1000℃ | 16 |
| Specific heat capacity | |
| Temperature | 20℃ |
| J/gK | 0.49 |
| Melting point (℃) | 1500 |
| Max continuous operating temperature in air (℃) | 1300 |
| Magnetic properties | magnetic |
Style of supply
| Alloys Name | Type | Dimension | |
| UALLOY139W | Wire | D=0.03mm~8mm | |
| UALLOY139R | Ribbon | W=0.4~40 | T=0.03~2.9mm |
| UALLOY139S | Strip | W=8~250mm | T=0.1~3.0 |
| UALLOY139F | Foil | W=6~120mm | T=0.003~0.1 |
| UALLOY139B | Bar | Dia=8~100mm | L=50~1000 |