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Materialen in de metaalbewerking FERRITISCH ROESTVRIJSTAAL [engelstalige bron]

Ferritic stainless steels are normally used when corrosion resistance and resistance to scaling at high temperatures is important, rather than for high strength purposes. Ferritics are nonhardenable by heat treating and they are always magnetic.

Stainless Types	Cr	Ni	CMax	Other Significant Elements	Characteristics	Typical Applications
400	12		.015	Al-.15	Corrosion resistance comparable to 409, better surface finish	Applications requiring improved finish over Type 409
409	11		0.01	Ti-.20	Economical corrosion and oxidation resistance	Heat exchangers, furnace liner, automotive exhaust systems
Armco 409 Ni	11	0.85	0.02	Ti-.20, Mn-.75	Corrosion resistance superior to mild and low carbon steels	Coal handling and mining equipment, exhaust flanges, transportation equipment
410S	12		0.015	Al-.15	Low cost, general purpose	Mild corrosive service
400Cb	11.5		.01	Cb.15, Al-.15	Controlled roping	Gaskets
430	17		0.05		General-purpose corrosion resistance	Appliance food equipment, miscellaneous automotive, flue liners
434	16 .5		0.065	1.0	Improved corrosion resistance over 430	Automotive trim
435 Mod.	19.5		0.02	Cb.70, Cu-.50	Improved formability and weldability	Automotive trim
436	16		0.06	Mo-.75, Cb-.4	Controlled roping	Automotive trim
439	17		0.012	Ti-.30	Wet corrosion and oxidation resistance	Heating units, welded tubing, and auto exhaust components
444	17.5		.015	Ti-.25, Cb-.15, Mo-2.0	Oxidation, corrosion and stress cracking resistance	Water heater, solar panels, engine components
Armco 11 Cr-Cb	11		0.01	Si-1.3, Cb.35	More oxidation and creep resistant than Type 409 and 439	High temperature use furnaces, auto exhaust components
Armco 12 SR	12		0.015	Al - 1.25, Ti-.20, Cb-.50	Good oxidation and creep resistance	Heat exchangers, flue liners, furnaces, auto exhaust components
Armco 18 SR	17		0.02	Al-1.7, Ti-.20	High-temperature scaling resistance	Industrial ovens, heat exchangers, furnace liners
Armco 18 Cr-Cb	17.5		0.02	Ti-.25, Cb-.55	Oxidation resistant, creep resistant	Heat exchangers, furnace components, auto exhaust components