1.4828,21-12N,20Cr21Ni12N,EV4,SUH37

21-12N (1.4828)

21-12N

20Cr21Ni12N

EV4

SUH37

Diameter 2 - 75 mm

Tecnología de fundición: IF/EAF/LF/AOD/VOD/VIM/ESR/VAR

Control de calidad: pruebas de componentes, pruebas de propiedades mecánicas, pruebas ultrasónicas para el lado interior, pruebas de corrientes parásitas para la superficie...

1.4828 (21-12N) steel is a nitrogenous chromium-nickel austenitic thermal strength steel with excellent high temperature strength and high temperature oxidation resistance and thermal corrosion resistance. It is mainly used to manufacture large diesel exhaust valves that work below 800 ° C, especially under the condition of "heavy-duty high-speed" transportation in railway, and is widely used in internal combustion engine air valves.

Also used for large long life plastic injection molding, such as home appliances, computer shell and other molds. High surface finish of plastic products mold blow mold due to high hardness, can be used in plastic mold slider forming tools; Die parts that can be flame hardened or nitrided as required for production.

Chemical Composition:

Grade	C	Si	Mn	S	P	Cr	Ni	N	Cu
1.4828(21-12N)	0.15-0.25	0.75-1.25	1.0-1.6	≤0.03	≤0.035	20.5-22.5	10.5-12.5	0.15-0.30	≤0.3

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21-12N (1.4828)

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