Iron-Chromium-Aluminum Alloy Wires
0Cr25Al5 heating resistance wires
- Features:
- 0Cr25Al5 (DIN W.Nr. 1.4765) has significant advantages over nickel-chromium alloys in terms of maximum operating temperature, resistivity, cost, and oxidation resistance as a representative of Fe-Cr-Al heating alloys. The maximum operating temperature of 0Cr25Al5 can reach 1300℃. This makes it suitable for higher temperature heating application scenarios. Room temperature resistivity of 0Cr25Al5 is approximately 1.42 μΩ·m. Higher resistivity means shorter heating elements can be used for the same power, saving material. Aluminum content forms a dense Al₂O₃ (aluminum oxide) protective layer at high temperatures, which is more stable than the Cr₂O₃ layer of nickel-chromium alloys. During long-term use at 1200℃, oxidation rate is lower and service life is longer. Material cost is 50-70% lower than nickel-chromium alloys, offering significant economic advantages in mass production. Density is about 15% lower than Cr20Ni80. Lighter weight at the same volume helps reduce overall equipment weight. Small temperature coefficient of resistance, with relatively stable resistance variation in the high-temperature operating range, beneficial for stable heating power control.
- 0Cr25Al5 Resistance Wire is also known as Resistohm 142, FCHW-1 / FCHR-1, FeCrAl Ⅱ B, CrAl 25/5, FRCA33, GFC142 / GFC142W, X27Ю5T etc.
- Specifications:
- Bright and soft annealed finish: 0.05 - 1.6mm; Acid-pickled or oxidation finish: 1.0 -12.0mm; Golden color: 1.0-3.9mm; Blue color: 4.0-10.0mm; Rods: 6.0-150.0mm
Flat wire: width from 0.2 - 6.0mm and thickness from 0.08 - 1.0mm; Wide strip: width from 5.0 - 300mm and thickness from 0.05 - 4.0mm
Product Description
(Swipe the screen to view the full table)
Chemical Composition:| C | P | S | Mn | Si | Cr | Ni | Al | Fe |
|---|---|---|---|---|---|---|---|---|
| ≤ | ||||||||
| 0.06 | 0.025 | 0.02 | 0.5 | ≤0.6 | 23.0~26.0 | ≤0.6 | 4.5~6.5 | Remainder |
| Max. continuous service Temp. | 1300ºC | Resistivity at 20ºC( μΩ·m) | 1.42±0.07 |
| Density | 7.1 g/cm3 | Thermal conductivity(20ºC) | 13 W/(m·K) |
| Average linear expansion coefficient(20-1000ºC) | 15.0×10-6/ºC | Specific heat capacity | 0.46 J/(g·K) |
| Approx. melting point | 1500ºC | Elongation at breakn | Diameter≤3.0mm: ≥12% Diameter>3.0mm: ≥15% |
| Tensile strength(Rm/MPa) | ≥600 | Accelerated life test | ≥80h/1300ºC |
| Micrographic structure | Ferrite | Magnetic properties | Magnetic |
|
Diameter
(mm) |
Ohm per meter
(20ºC Ω/m) |
Length per kg
(m/kg) |
Weight per meter
(g/m) |
Diameter
(mm) |
Ohm per meter
(20ºC Ω/m) |
Length per kg
(m/kg) |
Weight per meter
(g/m) |
|---|---|---|---|---|---|---|---|
| 0.05 | 723.201 | 71731.87 | 0.01394 | 1.1 | 1.4942 | 148.21 | 6.74735 |
| 0.06 | 502.223 | 49813.80 | 0.02007 | 1.2 | 1.2556 | 124.53 | 8.02990 |
| 0.07 | 368.980 | 36597.89 | 0.02732 | 1.3 | 1.0698 | 106.11 | 9.42398 |
| 0.08 | 282.500 | 28020.26 | 0.03569 | 1.4 | 0.9224 | 91.49 | 10.92959 |
| 0.09 | 223.210 | 22139.46 | 0.04517 | 1.5 | 0.8036 | 79.70 | 12.54673 |
| 0.1 | 180.800 | 17932.97 | 0.05576 | 1.6 | 0.7063 | 70.05 | 14.27538 |
| 0.11 | 149.422 | 14820.63 | 0.06747 | 1.7 | 0.6256 | 62.05 | 16.11557 |
| 0.12 | 125.556 | 12453.45 | 0.08030 | 1.8 | 0.5580 | 55.35 | 18.06728 |
| 0.13 | 106.982 | 10611.22 | 0.09424 | 1.9 | 0.5008 | 49.68 | 20.13052 |
| 0.15 | 80.356 | 7970.21 | 0.12547 | 2.0 | 0.4520 | 44.83 | 22.30529 |
| 0.17 | 62.561 | 6205.18 | 0.16116 | 2.2 | 0.3736 | 37.05 | 26.98940 |
| 0.19 | 50.083 | 4967.58 | 0.20131 | 2.4 | 0.3139 | 31.13 | 32.11962 |
| 0.21 | 40.998 | 4066.43 | 0.24592 | 2.6 | 0.2675 | 26.53 | 37.69594 |
| 0.25 | 28.928 | 2869.27 | 0.34852 | 2.8 | 0.2306 | 22.87 | 43.71837 |
| 0.27 | 24.801 | 2459.94 | 0.40651 | 3.0 | 0.2009 | 19.93 | 50.18690 |
| 0.29 | 21.498 | 2132.34 | 0.46897 | 3.2 | 0.1766 | 17.51 | 57.10154 |
| 0.31 | 18.814 | 1866.07 | 0.53588 | 3.4 | 0.1564 | 15.51 | 64.46229 |
| 0.35 | 14.759 | 1463.92 | 0.68310 | 3.6 | 0.1395 | 13.84 | 72.26914 |
| 0.40 | 11.300 | 1120.81 | 0.89221 | 3.8 | 0.1252 | 12.42 | 80.52209 |
| 0.45 | 8.928 | 885.58 | 1.12921 | 4.0 | 0.1130 | 11.21 | 89.22116 |
| 0.50 | 7.232 | 717.32 | 1.39408 | 4.5 | 0.0893 | 8.86 | 112.92053 |
| 0.55 | 5.977 | 592.83 | 1.68684 | 5.0 | 0.0723 | 7.17 | 139.40806 |
| 0.60 | 5.022 | 498.14 | 2.00748 | 5.5 | 0.0598 | 5.93 | 168.68375 |
| 0.65 | 4.279 | 424.45 | 2.35600 | 6.0 | 0.0502 | 4.98 | 200.74760 |
| 0.70 | 3.690 | 365.98 | 2.73240 | 6.5 | 0.0428 | 4.24 | 235.59962 |
| 0.80 | 2.825 | 280.20 | 3.56885 | 7.0 | 0.0369 | 3.66 | 273.23979 |
| 0.85 | 2.502 | 248.21 | 4.02889 | 7.5 | 0.0321 | 3.19 | 313.66813 |
| 0.90 | 2.232 | 221.39 | 4.51682 | 8.0 | 0.0283 | 2.80 | 356.88462 |
| 0.95 | 2.003 | 198.70 | 5.03263 | 8.5 | 0.0250 | 2.48 | 402.88928 |
| 1.00 | 1.808 | 179.33 | 5.57632 | 9.0 | 0.0223 | 2.21 | 451.68210 |
The above parameters are based on Chinese National Standard GB/T1234-2012. The tolerance of resistance per meter: 0.03-0.06mm is ±10%; 0.07-0.12mm is ±8%; 0.13-0.17mm is ±7%; 0.18-0.32mm is ±6%; A wire diameter above 0.32mm is ±5%. We provide the Iron-Chromium-Aluminium alloy products in various forms, like the wires, strips and rods. Other alloys like 0Cr23Al5, 0Cr21Al6Nb, 0Cr20Al3, 0Cr20Al6RE, 1Cr13Al4 and 0Cr27Al7Mo2 are also available upon request.