Fecral Resistance Heating Alloy Ribbon
Nominal Analysis
Cr 25%, Al 5%, Fe Bal. ºC
Max contineous working temperature: ºC
Melting Temperature: 1500
Electrical Resistivity: 1.25 ohm mm2/m(Also have other choices)
Size: Thickness 0.01-7mm, width 5mm-300mm
Standard: ASTM B603, DIN 17470, TOCT 10994, JIS C2520, GB/T1234
| Properties/Grade | 1Cr13Al4 | 0Cr21Al4 | 0Cr21Al6 | 0Cr23Al5 | 0Cr25Al5 | 0Cr21Al6Nb | 0Cr27Al7Mo2 |
| Main Chemical composition(%) | Cr | 12.0-15.0 | 18.0-21.0 | 19.0-22.0 | 22.5-24.5 | 23.0-26.0 | 21.0-23.0 | 26.5-27.8 |
| Al | 4.0-6.0 | 3.0-4.2 | 5.0-7.0 | 4.2-5.0 | 4.5-6.5 | 5.0-7.0 | 6.0-7.0 |
| Fe | Balance | Balance | Balance | Balance | Balance | Balance | Balance |
| Re | opportune | opportune | opportune | opportune | opportune | opportune | opportune |
| | | | | | | Nb:0.5 | Mo:1.8-2.2 |
| Max. continuous service temp. of element | 950 | 1100 | 1250 | 1250 | 1250 | 1350 | 1400 |
| Resistivity at 20oC (μ Ω @ m) | 1.25+-0.08 | 1.23+-0.06 | 1.42+-0.07 | 1.35+-0.07 | 1.42+-0.06 | 1.45+-0.07 | 1.53+-0.07 |
| Density (g/cm3) | 7.4 | 7.35 | 7.16 | 7.25 | 7.1 | 7.1 | 7.1 |
| Thermal conductivity(KJ/ oC) | 52.7 | 46.9 | 63.2 | 60.2 | 46.1 | 46.1 | 45.2 |
| Coefficient of lines expansion(α × 10-6/oC) | 15.4 | 13.5 | 14.7 | 15 | 16 | 16 | 16 |
| Melting point (approx. )( oC) | 1450 | 1500 | 1500 | 1500 | 1500 | 1510 | 1520 |
| Elongation at rupture (%) | ≥16 | ≥12 | ≥12 | ≥12 | ≥12 | ≥12 | ≥10 |
| Micrographic structure | Ferrite | Ferrite | Ferrite | Ferrite | Ferrite | Ferrite | Ferrite |
| Magnetic properties | magnetic | magnetic | magnetic | magnetic | magnetic | magnetic | magnetic |
Has been used extensively as heating elements in industrial furnaces and Brake Resistor. Our company produce many kind of resistivity and surface metal strip for our clients.