Fe-Cr-Al alloy gives the highest service temperature of the two families with lower material cost, and its alumina layer resists oxidation at high temperature. It is the standard choice for industrial furnaces, radiant tubes and ceramic hobs. Grades: 0Cr25Al5, 0Cr23Al5, 0Cr21Al6Nb, 0Cr21Al4, 0Cr27Al7Mo2, 0Cr18Al3, 0Cr13Al4.
Grades in this category
Shared specification
Shape Round wire / ribbon / strip
Diameter (round) 0.1 mm – 5.2 mm
Ribbon Width 10–195 mm / Thickness 0.04–4 mm
Surface Bright annealing / acid pickling / oxidation / polishing
Temper Annealed soft / half-hard / hard
MOQ 100 kg
Origin Taizhou, Jiangsu, China
OEM / ODM Accepted
Resistivity
Physical & mechanical
Kanthal comparison
Grade Diameter / mm Resistivity (20 °C) μΩ·m Cr20Ni80 <0.50 / 0.50–3.00 / >3.00 1.09 / 1.13 / 1.14 ±0.05 Cr30Ni70 <0.50 / ≥0.50 1.18 / 1.20 ±0.05 Cr15Ni60 <0.50 / ≥0.50 1.12 / 1.15 ±0.05 Cr20Ni35 — 1.04 ±0.05 Cr20Ni30 — 1.04 ±0.05 Cr20Ni25 <0.50 / 0.50–3.00 / >3.00 1.25 / 1.23 / 1.35 ±0.06–0.08 0Cr25Al5 0.020–10.00 1.40 ±0.07 0Cr23Al5 — 1.35 ±0.06 0Cr21Al6Nb — 1.42 ±0.07 0Cr21Al4 — 1.25 ±0.08 0Cr27Al7Mo2 — 1.53 ±0.07 0Cr18Al3 — 1.25 ±0.08 0Cr13Al4 — 1.23 ±0.07
Grade Density g/cm³ Elongation % Tensile strength MPa Cr20Ni80 8.4 20–30 650–800 Cr30Ni70 8.2 18–25 600–750 Cr15Ni60 8.2 15–25 650–850 Cr20Ni35 7.9 15–22 600–750 Cr20Ni30 7.8 15–20 580–700 Cr20Ni25 7.8 12–18 550–680 0Cr25Al5 7.1 8–15 600–800 0Cr23Al5 7.1 8–12 650–850 0Cr21Al6Nb 7.2 10–18 600–850 0Cr21Al4 7.1 10–16 550–750 0Cr27Al7Mo2 7.2 6–10 700–900 0Cr18Al3 7.0 12–20 500–700 0Cr13Al4 7.0 10–18 550–750
Kanthal grade Chinese grade Max temp °C Main composition (reference) A-1 0Cr25Al5 1400 Cr 22–23 %, Al 5.8–6.0 % A 0Cr21Al6 / 0Cr23Al5 1350 Cr 21–23 %, Al 5.5–6.5 % D 0Cr21Al4 1300 Cr 20–22 %, Al 4.0–5.0 % AF 0Cr27Al7Mo2 1400 Cr 26.5–27.8 %, Al 6.0–7.2 %, Mo X 0Cr21Al4 / 0Cr23Al5 1250 Cr 21–22 %, Al 4.5–5.5 % N80 (NiCr 80/20) Cr20Ni80 1100 Ni 76–80 %, Cr 19–21 % N60 (NiCr 60/15) Cr15Ni60 1050 Ni 58–61 %, Cr 15–16 % NiCr 70/30 Cr30Ni70 1050 Ni 68–72 %, Cr 28–31 %
Applications
Industrial furnace elements, radiant tubes and kilns
Oven, toaster and hair-dryer heating elements
Cartridge heaters, band heaters and hot runners
Resistors, rheostats and braking resistors
Ceramic hobs and infrared heaters