0Cr24Al6RE resistance wire

Features:: 0Cr24Al6RE is a 'star' material defined in the GB/T 1234-2012 standard. By adding trace amounts of rare earth elements, it successfully addresses the pain points of traditional FeCrAl alloys — poor thermal cycling performance and high-temperature deformation — while maintaining the advantages of high resistivity (1.48 μΩ·m) and low cost. The addition of rare earth elements improves the resistance to " Green Rot " and corrosion resistance of 0Cr24Al6RE, making its performance in sulfur-containing or mildly reducing atmospheres superior to ordinary FeCrAl, and in some cases even comparable to nickel-chromium alloys. At the same time, rare earth elements inhibit excessive grain growth at high temperatures. Although it remains more brittle than nickel-chromium alloys after use, 0Cr24Al6RE exhibits better toughness at room temperature compared to ordinary FeCrAl and is less prone to breaking during installation and maintenance. Rare earth elements refine the grain structure and stabilize the interface between the oxide film and the substrate. The maximum service temperature of 0Cr24Al6RE can reach 1400°C, which is better than 0Cr21Al6Nb (about 1350°C). Additionally, rare earth elements improve the stability and growth rate control of the alumina layer, making it less prone to burning or deformation under extreme high temperatures.
Specifications:: Bright and soft annealed finish: 0.05 - 1.6mm; Acid-pickled or oxidation finish: 1.0 -12.0mm; Rods: 6.0-150.0mm
Flat wires: width 0.2 - 6.0mm and thickness 0.08 - 1.0mm; Strips: width 5.0 - 300mm and thickness 0.05 - 4.0mm

Product Description

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Chemical Composition:

C	P	S	Mn	Si	Cr	Ni	Al	Fe	RE
≤				Si	Cr	Ni	Al	Fe	RE
0.04	0.025	0.02	0.5	≤0.4	22.0~26.0	≤0.6	5.0~7.0	Remainder	0.04~1.0

Physical Properties:

Max. Operating Temp.	1400ºC	Resistivity at 20ºC( μΩ·m)	1.48±0.07
Density	7.1 g/cm³	Thermal conductivity(20ºC)	13 W/(m·K)
Average linear expansion coefficient(20-1000ºC)	16.0×10^-6/ºC	Specific heat capacity	0.49 J/(g·K)
Approx. melting point	1520ºC	Elongation after Fracture (A/%)	Diameter≤3.0mm: ≥10% Diameter>3.0mm: ≥12%
Tensile strength(R_m/MPa)	≥680	Accelerated life test	≥80h/1350ºC
Micrographic structure	Ferrite	Magnetic properties	Magnetic

Technical Parameters:

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	753.758	71731.87	0.01394	1.1	1.5574	148.21	6.74735
0.06	523.443	49813.80	0.02007	1.2	1.3086	124.53	8.02990
0.07	384.571	36597.89	0.02732	1.3	1.1150	106.11	9.42398
0.08	294.437	28020.26	0.03569	1.4	0.9614	91.49	10.92959
0.09	232.641	22139.46	0.04517	1.5	0.8375	79.70	12.54673
0.1	188.440	17932.97	0.05576	1.6	0.7361	70.05	14.27538
0.11	155.735	14820.63	0.06747	1.7	0.6520	62.05	16.11557
0.12	130.861	12453.45	0.08030	1.8	0.5816	55.35	18.06728
0.13	111.503	10611.22	0.09424	1.9	0.5220	49.68	20.13052
0.15	83.751	7970.21	0.12547	2.0	0.4711	44.83	22.30529
0.17	65.204	6205.18	0.16116	2.2	0.3893	37.05	26.98940
0.19	52.199	4967.58	0.20131	2.4	0.3272	31.13	32.11962
0.21	42.730	4066.43	0.24592	2.6	0.2788	26.53	37.69594
0.25	30.150	2869.27	0.34852	2.8	0.2404	22.87	43.71837
0.27	25.849	2459.94	0.40651	3.0	0.2094	19.93	50.18690
0.29	22.407	2132.34	0.46897	3.2	0.1840	17.51	57.10154
0.31	19.609	1866.07	0.53588	3.4	0.1630	15.51	64.46229
0.35	15.383	1463.92	0.68310	3.6	0.1454	13.84	72.26914
0.40	11.777	1120.81	0.89221	3.8	0.1305	12.42	80.52209
0.45	9.306	885.58	1.12921	4.0	0.1178	11.21	89.22116
0.50	7.538	717.32	1.39408	4.5	0.0931	8.86	112.92053
0.55	6.229	592.83	1.68684	5.0	0.0754	7.17	139.40806
0.60	5.234	498.14	2.00748	5.5	0.0623	5.93	168.68375
0.65	4.460	424.45	2.35600	6.0	0.0523	4.98	200.74760
0.70	3.846	365.98	2.73240	6.5	0.0446	4.24	235.59962
0.80	2.944	280.20	3.56885	7.0	0.0385	3.66	273.23979
0.85	2.608	248.21	4.02889	7.5	0.0335	3.19	313.66813
0.90	2.326	221.39	4.51682	8.0	0.0294	2.80	356.88462
0.95	2.088	198.70	5.03263	8.5	0.0261	2.48	402.88928
1.00	1.884	179.33	5.57632	9.0	0.0233	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, 1Cr13Al4, 0Cr20Al6RE , 0Cr25Al5 and 0Cr27Al7Mo2 are also available upon request.

0Cr24Al6RE Datasheet Download