Furnace FeCrAl Alloy FeCr23Al5 Resistance Band Strip For Heating
Elements
OhmAlloy135
(Common Name:0Cr23Al5, D, , Alloy 815, Alchrome DK, Alferon 901,
Resistohm 135,Aluchrom S, Stablohm 812)
OhmAlloy135 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
1250°C.
Typical applications for OhmAlloy135 are used in home appliances
and industrial furnace,and kinds of elements in heaters and dryers.
Normal composition%
| C | P | S | Mn | Si | Cr | Ni | Al | Fe | Other |
| Max |
| 0.06 | 0.025 | 0.025 | 0.70 | Max 0.6 | 20.5~23.5 | Max 0.60 | 4.2~5.3 | Bal. | - |
Typical Mechanical properties(1.0mm)
| Yield strength | Tensile Strength | Elongation |
| Mpa | Mpa | % |
| 485 | 670 | 23 |
Typical Physical properties
| Density (g/cm3) | 7.25 |
| Resistivity at 20℃(мкОм*м) | 1.3-1,4 |
| Conductivity coefficient at 20℃ (WmK) | 13 |
Coefficient of thermal expansion |
| Temperature | Coefficient of Thermal Expansion x10-6/℃ |
| 20 ℃- 1000℃ | 15 |
| Specific heat capacity |
| Temperature | 20℃ |
| J/gK | 0.46 |
| Melting point (℃) | 1500 |
| Max continuous operating temperature in air (℃) | 1250 |
| Magnetic properties | non-magnetic |
Style of supply
| Alloys Name | Type | Dimension | |
| OhmAlloy135W | Wire | D=0.03mm~8mm | |
| OhmAlloy135R | Ribbon | W=0.4~40mm | T=0.03~2.9mm |
| OhmAlloy135S | Strip | W=8~250mm | T=0.1~3.0mm |
| OhmAlloy135F | Foil | W=6~120mm | T=0.003~0.1mm |
| OhmAlloy135B | Bar | Dia=8~100mm | L=50~1000mm |
| | | | |
Fechral can most likely be attributed to metals with a very high
electrical resistance, which explains its widespread use in
electrical products associated with high temperatures. This article
describes in detail the physical properties of the application
area, various brands of fechral and types of goods in which metal
is used.
Fechral itself is an alloy consisting of elements such as chrome
aluminum and iron with a small percentage of nickel of about 0.6
percent. The low content of the latter gives the alloy an
undeniable advantage over nichrome making it cheaper. With a
melting point of -1500 degrees, the fechral can withstand operating
conditions and at 1400 degrees, plus, the resistivity is 1.39 μOhm.
With a density of 7.21g / cm3, this alloy can be confidently
considered a serious competitor to nichrome.
Fechral has a high degree of resistance, which is a distinctive and
main useful feature of this alloy. It is also characterized by heat
resistance and is not prone to corrosion. The alloy is hard and
works in conjunction with various materials as well as in
aggressive environments and atmospheres. The only weak point of
fechral is the presence of iron in its composition, which makes the
alloy brittle enough, which in turn complicates the processing of
metal to obtain the final product.
