China FeCrAl Foil 0Cr21Al6Nb 0.05mm for Metal Catalytic Converter Substrate Manufacture and Factory

FeCrAl Foil 0Cr21Al6Nb 0.05mm for Metal Catalytic Converter Substrate

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FeCrAl Foil 0Cr21Al6Nb 0.05mm for Metal Catalytic Converter Substrate

0Cr21Al6Nb FeCrAl foil is the most widely used iron-chromium-aluminum alloy for automotive metallic honeycomb substrates in three-way catalytic converters (TWC), diesel oxidation catalysts (DOC) and diesel particulate filters (DPF). The addition of niobium (Nb, 0.5–1.5%) forms fine Laves-phase precipitates that significantly improve creep resistance and sag resistance at temperatures above 1000°C, ensuring long-term structural stability in exhaust environments.

Typical Chemical Composition (%)

Cr: 21.0–23.0 Al: 5.5–6.5 Nb: 0.5–1.5 C: ≤0.05 Si: ≤0.5 Mn: ≤0.3 Fe: Balance

Characteristics & Properties:

1) The highest working temperature up to 1250 degree.
2) Longer working life,and better technical properties
3) Higher surface load.
4) Higher resistivity.
5) Lower density.
6) Free from oxide debris

Material Designation	Other Name	Rough Chemical Composition
		Ni	Cr	Fe	Nb	Al	Rest
Nickel Chrome
Cr20Ni80	NiCr8020	80.0	20.0
Cr15Ni60	NiCr6015	60.0	15.0	20.0
Cr20Ni35	NiCr3520	35.0	20.0	45.0
Cr20Ni30	NiCr3020	30.0	20.0	50.0
Iron Chrome Aluminum
OCr25Al5	CrAl25-5		23.0	71.0		6.0
OCr20Al5	CrAl20-5		20.0	75.0		5.0
OCr27Al7Mo2			27.0	65.0	0.5	7.0	0.5
OCr21Al6Nb			21.0	72.0	0.5	6.0	0.5

3.Suggested Applications:

Material Designation	Service Properties	Applications
Nickel Chrome
Cr20Ni80	Contains long life additions making it eminently suitable for applications subject to frequent switching and wide temperature fluctuations. Can be used at operating temperatures up to 1150 °C.	Control resistors, high temperature furnaces, soldering irons.
Cr15Ni60	A Ni/Cr alloy with balance mainly Iron, with long life additions. It is suitable for use up to 1100 °C, but the higher coefficient of resistance makes it suitable for less exacting applications than 80/20.	Electric heaters, heavy duty resistors, electric furnaces.
Cr20Ni35	Balance mainly Iron. Suitable for continous operation up to 1050°C, in furnaces with atmospheres which may otherwise cause dry corrosion for higher nickel content materials.	Electric heaters, electric furnaces (with atmospheres).
Iron Chrome Aluminum
OCr25Al5	Can be used in operating conditions up to 1350°C, although can become embrittled.	Heating elements of high temperature furnaces and radiant heaters.
OCr20Al5	A ferromagnetic alloy which can be used at temperatures up to 1300°C. Should be operated in dry surroundings to avoid corrosion. Can become embrittled at high temperatures.	Heating elements of high temperature furnaces and radiant heaters.